PVDF球晶的分离与形貌研究  

Separation and Morphology Investigation of PVDF Spherulites

作　　者：张研 王佳耀 叶翠翠 由吉春[1] ZHANG Yan;WANG Jiayao;YE Cuicui;YOU Jichun(College of Material, Chemistry and Chemical Engineering, IIangzhou Normal University, IIangzhou 31003G, China)

机构地区：[1]杭州师范大学材料与化学化工学院,浙江杭州310036

出　　处：《杭州师范大学学报（自然科学版）》2018年第2期113-117,共5页Journal of Hangzhou Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(21234007)

摘　　要：结晶性聚合物在熔融冷却时,往往会有球晶产生,这种晶体结构会对聚合物宏观性能产生显著影响.然而迄今为止,球晶的分离仍然面临巨大挑战,造成我们对晶体结构认知的缺失.本工作以聚偏氟乙烯(PVDF)和聚丁二酸丁二醇酯(PBSU)的共混体系为例,通过组分配比以及热历史的调控,辅以刻蚀去除连续相(PBSU)的方式,成功制备得到了相互分离的PVDF球晶.采用光学显微镜(OM)和扫描电子显微镜(SEM)对所得球晶的微观形貌进行了系统研究.Spherulites,which are produced after the melting and cooling of crystal polymers,have remarkable effects on the macroscopic properties of the polymers.However,the separation of spherulites is facing great challenges,resulting in the absence of the investigation on crystal structures.In this work,the separated PVDF spherulites,successfully obtained by the precise control of composition,thermal treatment,phase separation and the selective etching in PVDF/PBSU blend system,are investigated by OM and SEM.

关 键 词：聚偏氟乙烯 聚丁二酸丁二醇酯 球晶 形貌 

分 类 号：O631[理学—高分子化学]