中山大学学报(自然科学版)2003，Vol.42Issue(z1)：5-10,6.
由二氧化碳和环氧丙烷生成的聚碳酸亚丙酯的合成与降解行为
Synthesis and Degradation Behavior of Poly(propylene carbonate) Derived from Carbon Dioxide and Propylene Oxide
摘要
Abstract
High molecular weight and regular molecular structure poly(propylene carbonate) (PPC) was successfully synthesized from carbon dioxide and propylene oxide. The PPC copolymer structure was an exact alternating copolymer as evidenced by the 13C NMR technique. Degradative behavior of the PPC was conducted by soil burial and buffer solution immersion (pH=6) tests, respectively. The results showed that the weight loss of soil buried PPC films increased more slowly than that immersed in the buffer solution after 6-month exposure. However, the weight loss of sample immersed in the buffer solution increased rapidly during the first two months and reached a value of 4.59%. Water sorption measurement also revealed that the PPC membranes immersed in buffer solution were more hydrophilic than those in soil burial tests. The degradation mechanism of PPC membranes was correlated with the sample morphologies, FTIR and 1H NMR spectra. The SEM morphologies were consistent with the weight loss and water sorption measurements.关键词
降解/聚碳酸亚丙酯/二氧化碳/环氧丙烷Key words
degradation/poly(propylene carbonate)/carbon dioxide/propylene oxide分类
数理科学引用本文复制引用
杜隆超,孟跃中,王拴紧,张世震..由二氧化碳和环氧丙烷生成的聚碳酸亚丙酯的合成与降解行为[J].中山大学学报(自然科学版),2003,42(z1):5-10,6.基金项目
This work was supported by the National Natural Science Foundation of China (NSFC) (Key project, Grant No.29734120), Natural Science Foundation of Guangdong Province (Team Project, Grant No.015007), Key Strategic Project of Chinese Academy of Sciences (Gr （NSFC）
