摘要
将聚碳酸亚丙酯新型高分子材料与淀粉进行共混,研究了共混物的机械性能及其在城市垃圾中的生物降解过程。结果表明,淀粉的加入可提高材料的拉伸强度和拉伸模量,促进聚碳酸亚丙酯的微生物降解速度。降解实验显示半年降解样出现大量空洞,共混物中聚碳酸亚丙酯的数均分子量下降40.5%,其降解可分为三个过程,分别对应微生物的生长、淀粉的降解及PPC的降解。红外测试表明半年降解样仍含有少量淀粉。
Completely biodegradable blend of poly (propylene carbonate) /35 % starch was prepared by melt compounding followed by pressing into thin plates. The biodegradation experiment demonstrated that the as - made blend exhibited good biodegradability and revealed a three - stage biodegradation, corresponding to the propagation of microorganisms, the degradation of starch and the degradation of PPC. Mechanical properties of composites for different contents of starch were also discussed.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第4期37-39,46,共4页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
国家科技部基金资助项目(2002BA653C)广东省自然科学基金资助项目(015007)广州市科技局重点资助项目(2001-z-114-01).
关键词
聚碳酸亚丙酯
淀粉
生物降解
垃圾
Poly (propylene carbonate)
starch
biodegradation
solid waste
