摘要
通过溶液浇铸法制备了聚乳酸/聚苯乙烯共混物,以差热-热重分析研究了共混物的热氧稳定性,结果表明聚乳酸中引入聚苯乙烯,可以增强聚乳酸/聚苯乙烯共混物的热氧稳定性。采用红外光谱分析了共混物不同结构的分子链间相互作用,证实聚乳酸大分子链羰基的未共用电子对和聚苯乙烯大分子链侧基苯环的π电子形成了n-π键。
Poly（lactic acid）/polystyrene blends were prepared by solution cast method.Thermo-oxidative degradation of blends was studied using a conventional non-isothermal gravimetric technique.Thermo-oxidative stability of blends increased with the addition of polystyrene content.The results of FTIR revealed the existence of n-π interactions between poly（lactic acid）and polystyrene.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2011年第10期1333-1336,共4页
Chemical Research and Application
基金
唐山市科技局资助项目(07160213B)
唐山师范学院项目(07A02)
关键词
聚乳酸
聚苯乙烯
共混物
热性能n-π键
poly（lactic acid）polystyrene blends thermo-oxidative stability n-π bond
