Influence of Zeolitic imidazolate framework-8 on the thermal stabilization of poly(vinyl chloride)
A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Wang, Mei [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2018transfer abstract |
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| Schlagwörter: |
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| Umfang: |
7 |
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| Übergeordnetes Werk: |
Enthalten in: Patient and Graft Survival After Pre-emptive Versus Non-pre-emptive Kidney Transplantation: A Single-Center Experience From Turkey - 2013, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:149 ; year:2018 ; pages:112-118 ; extent:7 |
| Links: |
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| DOI / URN: |
10.1016/j.polymdegradstab.2018.01.022 |
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| Katalog-ID: |
ELV042373603 |
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| 245 | 1 | 0 | |a Influence of Zeolitic imidazolate framework-8 on the thermal stabilization of poly(vinyl chloride) |
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| 520 | |a A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. | ||
| 520 | |a A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. | ||
| 650 | 7 | |a Zeolitic imidazolate frameworks |2 Elsevier | |
| 650 | 7 | |a Poly(vinyl chloride) |2 Elsevier | |
| 650 | 7 | |a Calcium-zinc stabilizers |2 Elsevier | |
| 650 | 7 | |a Thermal stability |2 Elsevier | |
| 700 | 1 | |a Song, Xianghai |4 oth | |
| 700 | 1 | |a Jiang, Jianchun |4 oth | |
| 700 | 1 | |a Xia, Jianling |4 oth | |
| 700 | 1 | |a Li, Mei |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science |t Patient and Graft Survival After Pre-emptive Versus Non-pre-emptive Kidney Transplantation: A Single-Center Experience From Turkey |d 2013 |g Amsterdam [u.a.] |w (DE-627)ELV016597362 |
| 773 | 1 | 8 | |g volume:149 |g year:2018 |g pages:112-118 |g extent:7 |
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10.1016/j.polymdegradstab.2018.01.022 doi GBV00000000000492.pica (DE-627)ELV042373603 (ELSEVIER)S0141-3910(18)30029-6 DE-627 ger DE-627 rakwb eng 610 VZ 550 VZ 38.86 bkl 43.50 bkl 58.51 bkl Wang, Mei verfasserin aut Influence of Zeolitic imidazolate framework-8 on the thermal stabilization of poly(vinyl chloride) 2018transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. Zeolitic imidazolate frameworks Elsevier Poly(vinyl chloride) Elsevier Calcium-zinc stabilizers Elsevier Thermal stability Elsevier Song, Xianghai oth Jiang, Jianchun oth Xia, Jianling oth Li, Mei oth Enthalten in Elsevier Science Patient and Graft Survival After Pre-emptive Versus Non-pre-emptive Kidney Transplantation: A Single-Center Experience From Turkey 2013 Amsterdam [u.a.] (DE-627)ELV016597362 volume:149 year:2018 pages:112-118 extent:7 https://doi.org/10.1016/j.polymdegradstab.2018.01.022 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 38.86 Grundwasser VZ 43.50 Umweltbelastungen VZ 58.51 Abwassertechnik Wasseraufbereitung VZ AR 149 2018 112-118 7 |
| spelling |
10.1016/j.polymdegradstab.2018.01.022 doi GBV00000000000492.pica (DE-627)ELV042373603 (ELSEVIER)S0141-3910(18)30029-6 DE-627 ger DE-627 rakwb eng 610 VZ 550 VZ 38.86 bkl 43.50 bkl 58.51 bkl Wang, Mei verfasserin aut Influence of Zeolitic imidazolate framework-8 on the thermal stabilization of poly(vinyl chloride) 2018transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. Zeolitic imidazolate frameworks Elsevier Poly(vinyl chloride) Elsevier Calcium-zinc stabilizers Elsevier Thermal stability Elsevier Song, Xianghai oth Jiang, Jianchun oth Xia, Jianling oth Li, Mei oth Enthalten in Elsevier Science Patient and Graft Survival After Pre-emptive Versus Non-pre-emptive Kidney Transplantation: A Single-Center Experience From Turkey 2013 Amsterdam [u.a.] (DE-627)ELV016597362 volume:149 year:2018 pages:112-118 extent:7 https://doi.org/10.1016/j.polymdegradstab.2018.01.022 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 38.86 Grundwasser VZ 43.50 Umweltbelastungen VZ 58.51 Abwassertechnik Wasseraufbereitung VZ AR 149 2018 112-118 7 |
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10.1016/j.polymdegradstab.2018.01.022 doi GBV00000000000492.pica (DE-627)ELV042373603 (ELSEVIER)S0141-3910(18)30029-6 DE-627 ger DE-627 rakwb eng 610 VZ 550 VZ 38.86 bkl 43.50 bkl 58.51 bkl Wang, Mei verfasserin aut Influence of Zeolitic imidazolate framework-8 on the thermal stabilization of poly(vinyl chloride) 2018transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. Zeolitic imidazolate frameworks Elsevier Poly(vinyl chloride) Elsevier Calcium-zinc stabilizers Elsevier Thermal stability Elsevier Song, Xianghai oth Jiang, Jianchun oth Xia, Jianling oth Li, Mei oth Enthalten in Elsevier Science Patient and Graft Survival After Pre-emptive Versus Non-pre-emptive Kidney Transplantation: A Single-Center Experience From Turkey 2013 Amsterdam [u.a.] (DE-627)ELV016597362 volume:149 year:2018 pages:112-118 extent:7 https://doi.org/10.1016/j.polymdegradstab.2018.01.022 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 38.86 Grundwasser VZ 43.50 Umweltbelastungen VZ 58.51 Abwassertechnik Wasseraufbereitung VZ AR 149 2018 112-118 7 |
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10.1016/j.polymdegradstab.2018.01.022 doi GBV00000000000492.pica (DE-627)ELV042373603 (ELSEVIER)S0141-3910(18)30029-6 DE-627 ger DE-627 rakwb eng 610 VZ 550 VZ 38.86 bkl 43.50 bkl 58.51 bkl Wang, Mei verfasserin aut Influence of Zeolitic imidazolate framework-8 on the thermal stabilization of poly(vinyl chloride) 2018transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. Zeolitic imidazolate frameworks Elsevier Poly(vinyl chloride) Elsevier Calcium-zinc stabilizers Elsevier Thermal stability Elsevier Song, Xianghai oth Jiang, Jianchun oth Xia, Jianling oth Li, Mei oth Enthalten in Elsevier Science Patient and Graft Survival After Pre-emptive Versus Non-pre-emptive Kidney Transplantation: A Single-Center Experience From Turkey 2013 Amsterdam [u.a.] (DE-627)ELV016597362 volume:149 year:2018 pages:112-118 extent:7 https://doi.org/10.1016/j.polymdegradstab.2018.01.022 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 38.86 Grundwasser VZ 43.50 Umweltbelastungen VZ 58.51 Abwassertechnik Wasseraufbereitung VZ AR 149 2018 112-118 7 |
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10.1016/j.polymdegradstab.2018.01.022 doi GBV00000000000492.pica (DE-627)ELV042373603 (ELSEVIER)S0141-3910(18)30029-6 DE-627 ger DE-627 rakwb eng 610 VZ 550 VZ 38.86 bkl 43.50 bkl 58.51 bkl Wang, Mei verfasserin aut Influence of Zeolitic imidazolate framework-8 on the thermal stabilization of poly(vinyl chloride) 2018transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. Zeolitic imidazolate frameworks Elsevier Poly(vinyl chloride) Elsevier Calcium-zinc stabilizers Elsevier Thermal stability Elsevier Song, Xianghai oth Jiang, Jianchun oth Xia, Jianling oth Li, Mei oth Enthalten in Elsevier Science Patient and Graft Survival After Pre-emptive Versus Non-pre-emptive Kidney Transplantation: A Single-Center Experience From Turkey 2013 Amsterdam [u.a.] (DE-627)ELV016597362 volume:149 year:2018 pages:112-118 extent:7 https://doi.org/10.1016/j.polymdegradstab.2018.01.022 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 38.86 Grundwasser VZ 43.50 Umweltbelastungen VZ 58.51 Abwassertechnik Wasseraufbereitung VZ AR 149 2018 112-118 7 |
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Patient and Graft Survival After Pre-emptive Versus Non-pre-emptive Kidney Transplantation: A Single-Center Experience From Turkey |
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influence of zeolitic imidazolate framework-8 on the thermal stabilization of poly(vinyl chloride) |
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Influence of Zeolitic imidazolate framework-8 on the thermal stabilization of poly(vinyl chloride) |
| abstract |
A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. |
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A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. |
| abstract_unstemmed |
A zeolitic imidazolate framework material (ZIF-8) was prepared from stoichiometric zinc nitrate and 2-methylimidazole at room temperature in the presence of ammonium hydroxide. The material was characterized by a series of methods and used as a thermal stabilizer for poly (vinyl chloride) (PVC) film. The properties of the stabilized PVC were investigated using Congo red test, thermal aging test and thermal gravimetric analysis (TGA). Compared with the stabilizing efficiencies of some commonly-used reference stabilizers (e.g. CaSt2 and ZnSt2), the stabilizers including ZIF-8 [such as CaSt2/ZnSt2/ZIF-8 and ZnSt2/ZIF-8] exhibit better initial color stability and long-term thermal stability for PVC. The static thermal stability time was significantly prolonged from 33.13 min for PVC/CaSt2/ZnSt2 to about 128.92 min for PVC/ZIF-8/ZnSt2 at 180 °C. The superior performance is attributed to the synergistic effect of ZIF-8 and ZnSt2. The imidazole ligand of ZIF-8 can strongly absorb hydrogen chloride and form complexes with ZnCl2 generated from ZnSt2 in the PVC degradation process. In addition, the double bonds of ZIF-8 may help to form stable compounds with polyenes to further retard the PVC degradation. Dynamic mechanical and tensile properties of the PVC films were also studied. |
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