(PE-g-PB-g-PA6)接枝共聚物中PA6链段结晶行为研究  

Crystallization behavior of PA6 chains in poly(ethylene)-graft- polybutadine-graft-poly(amide6)(PE-g-PB-g-PA6)copolymer

作　　者：柯卓[1] 殷敬华[1] 陈华兵[1] 陈利军[2] 施德安[2] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022 [2]湖北大学材料学院,武汉430062

出　　处：《胶体与聚合物》2009年第1期1-3,共3页Chinese Journal of Colloid & Polymer

摘　　要：采用选择性溶剂交替抽提的方法提纯在PE-g-PB-g-MA/PA6共混物中原位生成的接枝共聚物PE-g-PB-g-PA6,通过TEM﹑XPS﹑XRD﹑DSC等方法研究了该接枝共聚物的形貌与结晶行为。结果表明,PA6链段的结晶受到相形貌和分子结构的限制,扩散速度降低,导致在通常的结晶速率条件下(10℃/min)结晶不完善。The structure and crystallization behavior of PE-g-PB-g-PA6 graft copolymer containing 14% of PA6 by weight were studied using transmission electron microscopy （TEM）, differential scanning calorimetry （DSC）. PE and PA6 blocks crystallize independently and no eutectic or mixed crystals are formed. Strip like continuous PA6 phase with the thickness of 50-70nm are found in the PE-g-PB-g-PA6 graft copolymers, and the distribution of thermal fractions from successive self-nucleation （SSN） result shows the influence of morphological confinement on the crystallization of PA6 block within the PE-g-PB-g-PA6 graft copolymer. The morphological confinement result in the lower crystallization temperature, lower crystallinity.

关 键 词：尼龙 PE-g-PA6 接技其聚物 受限 结晶 

分 类 号：O631.1[理学—高分子化学] TS727.2[理学—化学]