Regulation from gradient to near periodic sequence during anionic copolymerization of styrene and dimethyl-[4-(1-phenyl-vinyl)phenyl]silane (DPE-SiH)
A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under th...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Li, Xuwen [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study - Fitzgerald, Emily ELSEVIER, 2020, the international journal for the science and technology of polymers, Oxford |
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| Übergeordnetes Werk: |
volume:244 ; year:2022 ; day:23 ; month:03 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.polymer.2022.124663 |
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ELV057028311 |
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| 245 | 1 | 0 | |a Regulation from gradient to near periodic sequence during anionic copolymerization of styrene and dimethyl-[4-(1-phenyl-vinyl)phenyl]silane (DPE-SiH) |
| 264 | 1 | |c 2022transfer abstract | |
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| 520 | |a A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. | ||
| 520 | |a A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. | ||
| 650 | 7 | |a Living anionic copolymerization |2 Elsevier | |
| 650 | 7 | |a Additives |2 Elsevier | |
| 650 | 7 | |a Near periodic sequence |2 Elsevier | |
| 700 | 1 | |a Han, Li |4 oth | |
| 700 | 1 | |a Zhang, Ruixue |4 oth | |
| 700 | 1 | |a Li, Chao |4 oth | |
| 700 | 1 | |a Zhang, Songbo |4 oth | |
| 700 | 1 | |a Bai, Hongyuan |4 oth | |
| 700 | 1 | |a Wang, Xuefei |4 oth | |
| 700 | 1 | |a Wang, Bo |4 oth | |
| 700 | 1 | |a Ma, Hongwei |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science |a Fitzgerald, Emily ELSEVIER |t Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study |d 2020 |d the international journal for the science and technology of polymers |g Oxford |w (DE-627)ELV005093368 |
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10.1016/j.polymer.2022.124663 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001697.pica (DE-627)ELV057028311 (ELSEVIER)S0032-3861(22)00150-1 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Li, Xuwen verfasserin aut Regulation from gradient to near periodic sequence during anionic copolymerization of styrene and dimethyl-[4-(1-phenyl-vinyl)phenyl]silane (DPE-SiH) 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. Living anionic copolymerization Elsevier Additives Elsevier Near periodic sequence Elsevier Han, Li oth Zhang, Ruixue oth Li, Chao oth Zhang, Songbo oth Bai, Hongyuan oth Wang, Xuefei oth Wang, Bo oth Ma, Hongwei oth Enthalten in Elsevier Science Fitzgerald, Emily ELSEVIER Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study 2020 the international journal for the science and technology of polymers Oxford (DE-627)ELV005093368 volume:244 year:2022 day:23 month:03 pages:0 https://doi.org/10.1016/j.polymer.2022.124663 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 244 2022 23 0323 0 |
| spelling |
10.1016/j.polymer.2022.124663 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001697.pica (DE-627)ELV057028311 (ELSEVIER)S0032-3861(22)00150-1 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Li, Xuwen verfasserin aut Regulation from gradient to near periodic sequence during anionic copolymerization of styrene and dimethyl-[4-(1-phenyl-vinyl)phenyl]silane (DPE-SiH) 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. Living anionic copolymerization Elsevier Additives Elsevier Near periodic sequence Elsevier Han, Li oth Zhang, Ruixue oth Li, Chao oth Zhang, Songbo oth Bai, Hongyuan oth Wang, Xuefei oth Wang, Bo oth Ma, Hongwei oth Enthalten in Elsevier Science Fitzgerald, Emily ELSEVIER Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study 2020 the international journal for the science and technology of polymers Oxford (DE-627)ELV005093368 volume:244 year:2022 day:23 month:03 pages:0 https://doi.org/10.1016/j.polymer.2022.124663 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 244 2022 23 0323 0 |
| allfields_unstemmed |
10.1016/j.polymer.2022.124663 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001697.pica (DE-627)ELV057028311 (ELSEVIER)S0032-3861(22)00150-1 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Li, Xuwen verfasserin aut Regulation from gradient to near periodic sequence during anionic copolymerization of styrene and dimethyl-[4-(1-phenyl-vinyl)phenyl]silane (DPE-SiH) 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. Living anionic copolymerization Elsevier Additives Elsevier Near periodic sequence Elsevier Han, Li oth Zhang, Ruixue oth Li, Chao oth Zhang, Songbo oth Bai, Hongyuan oth Wang, Xuefei oth Wang, Bo oth Ma, Hongwei oth Enthalten in Elsevier Science Fitzgerald, Emily ELSEVIER Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study 2020 the international journal for the science and technology of polymers Oxford (DE-627)ELV005093368 volume:244 year:2022 day:23 month:03 pages:0 https://doi.org/10.1016/j.polymer.2022.124663 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 244 2022 23 0323 0 |
| allfieldsGer |
10.1016/j.polymer.2022.124663 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001697.pica (DE-627)ELV057028311 (ELSEVIER)S0032-3861(22)00150-1 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Li, Xuwen verfasserin aut Regulation from gradient to near periodic sequence during anionic copolymerization of styrene and dimethyl-[4-(1-phenyl-vinyl)phenyl]silane (DPE-SiH) 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. Living anionic copolymerization Elsevier Additives Elsevier Near periodic sequence Elsevier Han, Li oth Zhang, Ruixue oth Li, Chao oth Zhang, Songbo oth Bai, Hongyuan oth Wang, Xuefei oth Wang, Bo oth Ma, Hongwei oth Enthalten in Elsevier Science Fitzgerald, Emily ELSEVIER Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study 2020 the international journal for the science and technology of polymers Oxford (DE-627)ELV005093368 volume:244 year:2022 day:23 month:03 pages:0 https://doi.org/10.1016/j.polymer.2022.124663 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 244 2022 23 0323 0 |
| allfieldsSound |
10.1016/j.polymer.2022.124663 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001697.pica (DE-627)ELV057028311 (ELSEVIER)S0032-3861(22)00150-1 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Li, Xuwen verfasserin aut Regulation from gradient to near periodic sequence during anionic copolymerization of styrene and dimethyl-[4-(1-phenyl-vinyl)phenyl]silane (DPE-SiH) 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. Living anionic copolymerization Elsevier Additives Elsevier Near periodic sequence Elsevier Han, Li oth Zhang, Ruixue oth Li, Chao oth Zhang, Songbo oth Bai, Hongyuan oth Wang, Xuefei oth Wang, Bo oth Ma, Hongwei oth Enthalten in Elsevier Science Fitzgerald, Emily ELSEVIER Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study 2020 the international journal for the science and technology of polymers Oxford (DE-627)ELV005093368 volume:244 year:2022 day:23 month:03 pages:0 https://doi.org/10.1016/j.polymer.2022.124663 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 244 2022 23 0323 0 |
| language |
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Enthalten in Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study Oxford volume:244 year:2022 day:23 month:03 pages:0 |
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regulation from gradient to near periodic sequence during anionic copolymerization of styrene and dimethyl-[4-(1-phenyl-vinyl)phenyl]silane (dpe-sih) |
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Regulation from gradient to near periodic sequence during anionic copolymerization of styrene and dimethyl-[4-(1-phenyl-vinyl)phenyl]silane (DPE-SiH) |
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A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. |
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A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. |
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A facile strategy for achieving sequence-controlled polymers with a sufficient molecular diversity is of great importance. The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers. |
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The periodic and gradient copolymers of styrene (St) and dimethyl-[4-(1-phenylvinyl)phenyl]silane (DPE-SiH) obtained through the living anionic copolymerization (LACOP) under the variable feed ratios (St:DPE-SiH = 0.5–4) in a nonpolar solvent without additives were well studied in our prior work (Zhang et al., 2019) [34]. Herein, a further study on the critical feed ratio of St (S) and DPE-SiH (D) at 3:1 is performed during the LACOP, where a peculiar interest lies whether a novel sequence will emerge between the periodic and gradient sequence with the additives of t-BuOK and THF. As the whole chain propagation process is monitored using in situ 1H NMR spectroscopy, the copolymerization kinetics, i.e., the reactivity ratio (r), apparent rate parameters (K app.), and the copolymer microstructures are investigated. Both t-BuOK and THF favors the incorporation of St into LACOP, as the trends r St = 0.1 (gradient sequence without additives) < r St = 0.22–0.29 (near periodic sequence for t-BuOK) < r St = 0.7–0.76 (near periodic sequence for THF). The near periodic sequences exhibit different periodicities distributed as “DSSDSS” for the t-BuOK and “DSSSDSSS” for the THF in the major. The strategy achieves the sequence regulation from statistically gradient to near periodic copolymers. Furthermore, we observe that the near periodic copolymers exhibit the similar T g values but over the gradient copolymers.</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Living anionic copolymerization</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Additives</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Near periodic sequence</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Han, Li</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Zhang, Ruixue</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Li, Chao</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Zhang, Songbo</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Bai, Hongyuan</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Wang, Xuefei</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Wang, Bo</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Ma, Hongwei</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="n">Elsevier Science</subfield><subfield code="a">Fitzgerald, Emily ELSEVIER</subfield><subfield code="t">Functional outcomes at 12 months for patients with traumatic brain injury, intracerebral haemorrhage and subarachnoid haemorrhage treated in an Australian neurocritical care unit: A prospective cohort study</subfield><subfield code="d">2020</subfield><subfield code="d">the international journal for the science and technology of polymers</subfield><subfield code="g">Oxford</subfield><subfield code="w">(DE-627)ELV005093368</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:244</subfield><subfield code="g">year:2022</subfield><subfield code="g">day:23</subfield><subfield code="g">month:03</subfield><subfield code="g">pages:0</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doi.org/10.1016/j.polymer.2022.124663</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ELV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">44.63</subfield><subfield code="j">Krankenpflege</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">44.69</subfield><subfield code="j">Intensivmedizin</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">244</subfield><subfield code="j">2022</subfield><subfield code="b">23</subfield><subfield code="c">0323</subfield><subfield code="h">0</subfield></datafield></record></collection>
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