Thermal depolymerization mechanisms of poly (3-hydroxybutyrate-co-3-hydroxyvalerate)

被引：63

作者：

Xiang, Hengxue ^{[1
]}

Wen, Xiaoshuang ^{[1
]}

Miu, Xiaohui ^{[1
]}

Li, Yan ^{[1
]}

Zhou, Zhe ^{[1
]}

Zhu, Meifang ^{[1
]}

机构：

[1] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fiber & Polymer Mat, Shanghai 201620, Peoples R China

来源：

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL | 2016年 / 26卷 / 01期

基金：

中国博士后科学基金;

关键词：

Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV); Thermal depolymerization; Thermal degradation; Biopolymer; Polyhydroxyalkanoates(PHAs); DEGRADATION; POLY(3-HYDROXYBUTYRATE);

D O I：

10.1016/j.pnsc.2016.01.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermal degradation processes and decomposition mechanisms of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) were investigated by using thermal gravity analysis(TGA), Gel permeation chromatography (GPC), elemental analyzer, pyrolysis-gas chromatography-mass spectrometry (PyGC-MS) and H-1 nuclear magnetic resonance (H-1 NMR). The degradation activation energy was calculated via the dependence of residual mass on isothermal temperature. H-1 NMR and PyGC-MS were used to investigate the chemical structure and component proportion of volatile gases and degradation residues which were produced by thermal decomposition, and to infer the process of macromolecular chain scission. Besides, the influence of the factors, such as outfield atmosphere, residual metal ions, on the degradation behaviors of PHBV was also studied. Finally, the PHBV thermal decomposition mechanisms were speculated on the basis of the degradation behaviors of molecular and chemical structure. (C) 2016 The Authors. Production and hosting by Elsevier B.V. on behalf of Chinese Materials Research Society. This is an open access article under the CC BY-NC-ND license (http://creativecommons.ordlicenses/hy-nc-nd/4.0/).

引用

页码：58 / 64

页数：7

共 21 条

[1] Determination of multiple thermal degradation mechanisms of poly(3-hydroxybutyrate) [J].