超临界CO_2作用下BAPC的诱导结晶和熔融行为  

Induced Crystallization and Melting Behavior of BAPC Treated by Supercritical CO_2

作　　者：丁晓娟[1] 丁一刚[1] 周春平[1] 胡雄[1] 谭涛[1] 

机构地区：[1]武汉工程大学湖北省新型反应器与绿色化学工艺重点实验室,湖北武汉430074

出　　处：《现代塑料加工应用》2007年第6期44-46,共3页Modern Plastics Processing and Applications

基　　金：湖北省教育厅重点项目资助(项目编号2003B002)

摘　　要：采用DSC,WAXD研究了在超临界CO2作用下,温度、压力和共溶剂对双酚A型聚碳酸酯(BAPC)的结晶和熔融行为的影响。结果表明,超临界CO2显著降低BAPC的结晶温度;少量共溶剂的加入使BAPC的结晶更加完善,BAPC晶体是单斜晶子;超临界CO2诱导结晶并未引起预聚体官能团的改变。The influences of temperature, pressure and cosolvent on the melting behavior of BAPC treated by supercritical CO2 were studied by DSC and WAXD. The results show that supercritical CO2 depresses the crystallization temperature of BAPC. The crystallization will he better by adding of a small amount of cosolvent. The BAPC crystals are monolclinic system. The functional groups of prepolymer are not changed with supercritical CO2 inducing crystallization.

关 键 词：超临界二氧化碳 诱导结晶 聚碳酸酯 共溶剂 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]