Synthesis of precisely diphenyl ether-functionalized polyethylene via acyclic diene metathesis polymerization
We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydr...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Cao, Yufeng [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2019transfer abstract |
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| Schlagwörter: |
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| Umfang: |
8 |
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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:175 ; year:2019 ; day:26 ; month:06 ; pages:41-48 ; extent:8 |
| Links: |
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| DOI / URN: |
10.1016/j.polymer.2019.04.070 |
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| 520 | |a We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. | ||
| 520 | |a We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. | ||
| 650 | 7 | |a Functionalized polyethylene |2 Elsevier | |
| 650 | 7 | |a Diphenyl ether |2 Elsevier | |
| 650 | 7 | |a Acyclic diene metathesis polymerization |2 Elsevier | |
| 700 | 1 | |a Hu, Guangwei |4 oth | |
| 700 | 1 | |a Lin, Shaohui |4 oth | |
| 700 | 1 | |a Rempel, Garry L. |4 oth | |
| 700 | 1 | |a Pan, Qinmin |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.2019.04.070 doi GBV00000000000680.pica (DE-627)ELV047117532 (ELSEVIER)S0032-3861(19)30399-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Cao, Yufeng verfasserin aut Synthesis of precisely diphenyl ether-functionalized polyethylene via acyclic diene metathesis polymerization 2019transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. Functionalized polyethylene Elsevier Diphenyl ether Elsevier Acyclic diene metathesis polymerization Elsevier Hu, Guangwei oth Lin, Shaohui oth Rempel, Garry L. oth Pan, Qinmin 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:175 year:2019 day:26 month:06 pages:41-48 extent:8 https://doi.org/10.1016/j.polymer.2019.04.070 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 175 2019 26 0626 41-48 8 |
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10.1016/j.polymer.2019.04.070 doi GBV00000000000680.pica (DE-627)ELV047117532 (ELSEVIER)S0032-3861(19)30399-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Cao, Yufeng verfasserin aut Synthesis of precisely diphenyl ether-functionalized polyethylene via acyclic diene metathesis polymerization 2019transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. Functionalized polyethylene Elsevier Diphenyl ether Elsevier Acyclic diene metathesis polymerization Elsevier Hu, Guangwei oth Lin, Shaohui oth Rempel, Garry L. oth Pan, Qinmin 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:175 year:2019 day:26 month:06 pages:41-48 extent:8 https://doi.org/10.1016/j.polymer.2019.04.070 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 175 2019 26 0626 41-48 8 |
| allfields_unstemmed |
10.1016/j.polymer.2019.04.070 doi GBV00000000000680.pica (DE-627)ELV047117532 (ELSEVIER)S0032-3861(19)30399-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Cao, Yufeng verfasserin aut Synthesis of precisely diphenyl ether-functionalized polyethylene via acyclic diene metathesis polymerization 2019transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. Functionalized polyethylene Elsevier Diphenyl ether Elsevier Acyclic diene metathesis polymerization Elsevier Hu, Guangwei oth Lin, Shaohui oth Rempel, Garry L. oth Pan, Qinmin 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:175 year:2019 day:26 month:06 pages:41-48 extent:8 https://doi.org/10.1016/j.polymer.2019.04.070 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 175 2019 26 0626 41-48 8 |
| allfieldsGer |
10.1016/j.polymer.2019.04.070 doi GBV00000000000680.pica (DE-627)ELV047117532 (ELSEVIER)S0032-3861(19)30399-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Cao, Yufeng verfasserin aut Synthesis of precisely diphenyl ether-functionalized polyethylene via acyclic diene metathesis polymerization 2019transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. Functionalized polyethylene Elsevier Diphenyl ether Elsevier Acyclic diene metathesis polymerization Elsevier Hu, Guangwei oth Lin, Shaohui oth Rempel, Garry L. oth Pan, Qinmin 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:175 year:2019 day:26 month:06 pages:41-48 extent:8 https://doi.org/10.1016/j.polymer.2019.04.070 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 175 2019 26 0626 41-48 8 |
| allfieldsSound |
10.1016/j.polymer.2019.04.070 doi GBV00000000000680.pica (DE-627)ELV047117532 (ELSEVIER)S0032-3861(19)30399-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.63 bkl 44.69 bkl Cao, Yufeng verfasserin aut Synthesis of precisely diphenyl ether-functionalized polyethylene via acyclic diene metathesis polymerization 2019transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. Functionalized polyethylene Elsevier Diphenyl ether Elsevier Acyclic diene metathesis polymerization Elsevier Hu, Guangwei oth Lin, Shaohui oth Rempel, Garry L. oth Pan, Qinmin 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:175 year:2019 day:26 month:06 pages:41-48 extent:8 https://doi.org/10.1016/j.polymer.2019.04.070 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.63 Krankenpflege VZ 44.69 Intensivmedizin VZ AR 175 2019 26 0626 41-48 8 |
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English |
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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:175 year:2019 day:26 month:06 pages:41-48 extent:8 |
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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:175 year:2019 day:26 month:06 pages:41-48 extent:8 |
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Functionalized polyethylene Diphenyl ether Acyclic diene metathesis polymerization |
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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 |
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The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. 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Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. 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Synthesis of precisely diphenyl ether-functionalized polyethylene via acyclic diene metathesis polymerization |
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We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. |
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We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. |
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We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. 1H and 13C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers. |
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Synthesis of precisely diphenyl ether-functionalized polyethylene via acyclic diene metathesis polymerization |
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