PA1212-b-PEG嵌段共聚物的组成对结晶和熔融行为的影响  

The influence of composition of PA1212-b-PEG block copolymer on the crystallization and melting behavior

作　　者：霍丽[1] 李华[1] 

机构地区：[1]中州大学化工食品学院,郑州450044

出　　处：《化工新型材料》2012年第3期88-90,共3页New Chemical Materials

摘　　要：研究以双端羧基尼龙1212为硬段,以双端氨基聚乙二醇为软段的聚酰胺-聚醚分嵌段共聚物的结晶行为。用偏光显微镜、差示扫描量热法研究了不同组成共聚物的结晶形态、熔融结晶温度的影响。PLM观察到共聚物的结晶形态随硬段分子量的增大趋于完善,软硬段相容性随软硬段分子量增大而变差;DSC扫描表明共聚物的熔融温度随着硬段分子量增大而增大,软硬段分子量较大时软硬段相容性较差。The crystallization behavior of polyamide and polyether divided block copolymerwas studied,used carboxylic-terminated nylon 1212 as hard segment,and amino-terminated polyethylene glycol as soft segment.Using polarized light microscopy and differential scanning calorimetry,theinfluence of different compositions of copolymer on crystallization morphology and melt crystallization temperature were studied.PLM observed thatcopolymer crystallization morphology tended to be perfect with increasing of the hard segment molecular weight,soft and hard segment compatibility was variation with increasing of these segment＇s molecular weight;The DSC scan revealed that melting temperatures of copolymers wasincreased with hard segment molecular weight increasing,hard and soft segments were poor compatibility when these molecular weight were larger.

关 键 词：双端氨基聚醚 双端羧基尼龙1212 热塑性聚酰胺弹性体 分段型嵌段共聚物 

分 类 号：TQ334[化学工程—橡胶工业]