聚芳醚酮与液晶聚酯多嵌段共聚物的合成表征  

Synthesis and Characterization of Block Copolymers Containg Poly(aryl ether ketone) and Liquid Crystalline Polyester Segments

作　　者：杨延华[1] 戴晓晖[2] 周兵[1] 马荣堂[1] 姜振华[1] 

机构地区：[1]吉林大学化学学院,长春130023 [2]江苏大学包装工程系,镇江212013

出　　处：《高等学校化学学报》2005年第3期589-591,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :5 0 2 0 3 0 0 4)资助 .

摘　　要：Block copolymers containing poly(aryl ether ketone) unit and different lengths of thermotropic liquid crystalline polyesters(TLCP) segments were synthesized by high temperature solution polymerization. The chemical structure, thermal properties and liquid crystalline behavior of the block copolymers were investigated by FTIR, DSC and PLM respectively. A single glass transition revealed that the two blocks had good a compatibility. The length of TLCP segment had a significant influence on the copolymers′ liquid crystalline behavior. When the molecular weight of TLCP reduced to 2965, liquid crystallinity of copolymer disappeared. The block copolymers showed a typical nematic threaded texture which differed from polyester′s.Block copolymers containing poly(aryl ether ketone) unit and different lengths of thermotropic liquid crystalline polyesters(TLCP) segments were synthesized by high temperature solution polymerization. The chemical structure, thermal properties and liquid crystalline behavior of the block copolymers were investigated by FTIR, DSC and PLM respectively. A single glass transition revealed that the two blocks had good a compatibility. The length of TLCP segment had a significant influence on the copolymers′ liquid crystalline behavior. When the molecular weight of TLCP reduced to 2965, liquid crystallinity of copolymer disappeared. The block copolymers showed a typical nematic threaded texture which differed from polyester′s.

关 键 词：聚芳醚酮 嵌段共聚物 热致液晶 向列相织构 

分 类 号：O631[理学—高分子化学]