脂肪族聚酯的热稳定性研究  

Thermal Stability of Aliphatic Polyesters

作　　者：孙杰[1] 廖肃然[2] 陆铭[2] 刘俊玲[1] 谭惠民[2] 罗运军[2] 

机构地区：[1]中国工程物理研究院化工材料研究所,四川绵阳621900 [2]北京理工大学材料科学与工程学院,北京100081

出　　处：《高分子材料科学与工程》2007年第6期144-147,共4页Polymer Materials Science & Engineering

摘　　要：用热失重(TG)和F lynn方法(等转化率方法)研究了聚丁二酸乙二醇酯(PESu),聚丁二酸丁二醇酯(PBSu),聚丁二酸已二醇酯(PHSu),聚癸二酸己二醇酯(PHSe)的热稳定性。结果表明,这些聚酯的热分解温度和分解活化能均随酯基浓度的降低而升高。该研究可对脂肪族聚酯的分子设计、合成和加工工艺提供参考。In order to investigate the correlation of thermal stability and molecular structure of aliphatic polyesters, the thermal decomposition temperature and thermal decomposition activation energy of aliphatic polyesters such as polyethylene-succinate （PESu）, polybutylene-succinate （PBSu）, polyhexylene-sueeinate （PHSu）, polyhexylene-sebacate （PHSe） was studied by non-isothermogravimetry analysis （TG） and the data were treated with Flynn method （also called iso-conversion method）. Results show that the studied aliphatic polyesters have good thermal stability, the initial decomposition temperature is all over 310℃ when the heating rate is 5℃/min, which can be safely synthesized and processed; the thermal decomposition temperature and thermal decomposition activation energy increases with the content of ester group decreasing. These results are important for the molecular design, synthesis and processing art of aliphatic polyesters.

关 键 词：脂肪族聚酯 热分解 热稳定性 

分 类 号：O631.31[理学—高分子化学]