PEEK-PEDEK嵌段共聚物非等温结晶动力学研究  

Nonisothermal Crystallization Kinetics of PEEK-PEDEK Block Copolymer

作　　者：王汉夫[1] 赵晓刚[1] 刘新才[1] 陈梁[1] 王力风[1] 陈春海[1] 吴忠文[1] 

机构地区：[1]吉林大学化学学院,长春130023

出　　处：《高等学校化学学报》2004年第7期1378-1380,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 0 10 40 0 3 );"九七三"计划项目 (批准号 :G2 0 0 3 CB615 60 4)资助

摘　　要：The nonisothermal crystallization kinetics of PEEK-PEDEK block copolymers was studied and the results showed that the Avrami exponent n of each sample was generally larger than 3, which indicates the initial crystallization of the complex. The crystallization behavior could be described as heterogeneous, multi-dimensional spherical growth with thermal nucleation. The activation energy was calculated and was explained with the constitution changes of the molecular chains that caused by the introduction of biphenyl moiety.The nonisothermal crystallization kinetics of PEEK-PEDEK block copolymers was studied and the results showed that the Avrami exponent n of each sample was generally larger than 3, which indicates the initial crystallization of the complex. The crystallization behavior could be described as heterogeneous, multi-dimensional spherical growth with thermal nucleation. The activation energy was calculated and was explained with the constitution changes of the molecular chains that caused by the introduction of biphenyl moiety.

关 键 词：聚醚醚酮 联苯二酚 嵌段共聚物 非等温结晶动力学 玻璃化转变温度 热性能 

分 类 号：O633[理学—高分子化学]