含间位联苯聚芳醚酮结晶熔融行为  

CRYSTALLIZATION MELTING BEHAVIOUR OF POLY(ARYL ETHER KETONES) CONTAIN BIPHENYL AND META LINKAGE

作　　者：王军佐[1] 吴忠文[1] 王尚尔[2] 莫志深[2] 杨毓华[2] 

机构地区：[1]吉林大学化学系 [2]中国科学院长春应用化学研究所

出　　处：《高分子材料科学与工程》1999年第4期109-112,共4页Polymer Materials Science & Engineering

摘　　要：含间位联苯聚芳醚酮玻璃态结晶是两步结晶过程。第一步结晶发生在玻璃化转变温度和２５５℃之间，是一个慢结晶过程（与第二步结晶相比），且与聚合物的分子量密切相关，所形成的晶体规整度差（熔点２５５℃左右）。第二步结晶发生在２５５℃和熔点之间，是一个快结晶过程。此过程是在第一步结晶基础上的晶体增厚或熔融重结晶。The crystallization melting behaviour of poly(aryl ether ketones) contain biphenyl and meta linkage was studied in this paper. This polymer appears two crystallization process in DSC measurement. The first stage emerges from T g to 255 ℃, the degree of crystallization perfection is worse, it is a slow crystallization process(contrasting to the second crystallization process) whose crystallization rate is closely relative to its molecular weight, molecular weight distribtion. While, the second crystallization process appears at 255 ℃￣300 ℃, it transforms to more perfect crystal throught the melting and recrystallization following the first crystallization process.

关 键 词：联苯 聚芳醚酮 结晶 熔融行为 

分 类 号：O632.32[理学—高分子化学] O631.13[理学—化学]