成膜溶剂对聚4-甲基戊烯-1膜的形态结构和透过行为的影响——Ⅰ.膜的结晶性质与表面形态  

EFFECTS OF MEMBRANE-FORMING SOLVENTS ON MORPHOLOGY AND PERMEATION BEHAVIOUR OF PMP MEMBRANES I. Crystalline Properties and Surface Morphology of the Membranes

作　　者：张世民[1] 龙程奋[1] 陈观文[1] 

机构地区：[1]中国科学院化学研究所

出　　处：《高分子学报》1989年第6期684-689,共6页Acta Polymerica Sinica

摘　　要：以聚4-甲基戊烯-1(PMP)为膜材质,分别以环己烷、三氯乙烯、四氯乙烯、环己烷/三氯乙烯及环己烷/四氯乙烯为溶剂,研究了这些溶液浇铸膜的结晶性质和表面形态。结果表明,溶剂对PMP的相对溶解能力和挥发速度同所成膜内PMP的结晶形式和结晶度密切相关;不同溶剂体系的PMP溶液浇铸膜的表面形态也不尽相同。并发现以四氯乙烯(或三氯乙烯)为溶剂或溶剂组分之一的PMP溶液浇铸膜存在未见报道的Ⅵ型结晶。Using poly (4-merhylpentene-l) (PMP) as a membrane material and cyclohexane, irich-loroethylene, tetrachloroethylene, mixture of cyclohexane and trichloroethylene or tetrachloro-ethylene as solvents, the solution were cast to form homogeneous dense membranes, and the crystalline properties and surface morphology were investigated by DSC and TEM. The results, showed that the crystalline form, crystallinity, and surface morphology of PMP membrane are closely related to the solubility and evaporation rate of solvents. A new type of PMP crystalline form, named VI-form crystal, was observed in PMP membranes formed by tetrachloroe-thylene or trichloroethylenecontaining solutions.

关 键 词：聚4-甲基戊烯-1膜 形态结构 结晶 表面形态 成膜溶剂 气体透过性 

分 类 号：O631.1[理学—高分子化学] O484[理学—化学]