Thermal degradation mechanism of poly(hexamethylene carbonate)
文献类型：期刊论文
| 作者 | Liu, Wei1,2; Zhu, Wenxiang1; Li, Chuncheng1; Guan, Guohu1; Zhang, Dong1; Xiao, Yaonan1; Zheng, Liuchun1 |
| 刊名 | POLYMER DEGRADATION AND STABILITY
 |
| 出版日期 | 2015-02-01 |
| 卷号 | 112页码:70-77 |
| 关键词 | Poly(hexamethylene carbonate) Thermal degradation mechanism Chain-end group Intramolecular transesterification reaction beta-H transfer reaction |
| 英文摘要 | Thermal degradation behaviors of poly(hexamethylene carbonate) (PHC) were investigated by means of thermogravimetric analysis (TGA), proton nuclear magnetic resonance (H-1 NMR), gel permeation chromatography (GPC) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). Six types of PHC samples with different end groups and molecular weights were synthesized to systematically investigate the thermal degradation mechanism. Thermal degradation behaviors of the PHC samples were examined under both isothermal and non-isothermal conditions. The PHC samples showed distinct thermal degradation behaviors from other aliphatic polycarbonates (poly(propylene carbonate), poly(trimethylene carbonate) and poly(butylene carbonate)). The results indicated that the chain-end structure makes a slight effect on the thermal stability of PHC regardless of the molecular weight. During the non-isothermal degradation of PHC, four main reactions were illustrated: unzipping, intramolecular transesterification, beta-H transfer and decarboxylation reactions. Intramolecular transesterification reaction dominantly occurs below 300 degrees C accompanying with unzipping reaction which can only be induced by hydroxyl end group, and releasing cyclic hexamethylene carbonate monomer and dimer. Above 300 degrees C, the four degradation reactions take place simultaneously. (C) 2015 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2015-11-02 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/28229]  |
| 专题 | 化学研究所_工程塑料实验室 |
| 作者单位 | 1.Chinese Acad Sci ICCAS, Inst Chem, Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Wei,Zhu, Wenxiang,Li, Chuncheng,et al. Thermal degradation mechanism of poly(hexamethylene carbonate)[J]. POLYMER DEGRADATION AND STABILITY,2015,112:70-77. |
| APA | Liu, Wei.,Zhu, Wenxiang.,Li, Chuncheng.,Guan, Guohu.,Zhang, Dong.,...&Zheng, Liuchun.(2015).Thermal degradation mechanism of poly(hexamethylene carbonate).POLYMER DEGRADATION AND STABILITY,112,70-77. |
| MLA | Liu, Wei,et al."Thermal degradation mechanism of poly(hexamethylene carbonate)".POLYMER DEGRADATION AND STABILITY 112(2015):70-77. |
入库方式： OAI收割
来源：化学研究所
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