PU/PVDF共混物形貌及其中空纤维膜制备  

Morphology and hollow fiber membrane preparation of PU/PVDF blend

作　　者：胡晓宇[1] 肖长发[1] 梁海先[1] 安树林[1] 

机构地区：[1]天津工业大学教育部中空纤维膜材料与膜过程重点实验室,天津300160

出　　处：《天津工业大学学报》2008年第3期9-11,共3页Journal of Tiangong University

基　　金：973计划资助项目(2006CB708600)

摘　　要：通过SEM分析了聚氨酯(PU)与聚偏氟乙烯(PVDF)共混物熔体组成与其挤出物形貌之间的关系,确定了PU/PVDF共混物经熔融纺丝制备中空纤维膜的较优配比,并对PU/PVDF共混中空纤维膜微孔结构形成机理进行了讨论.研究表明,结合聚合物共混界面相分离原理及熔融纺丝-冷拉伸法可制得通透性较好的PU/PVDF共混中空纤维膜.The relationship between the morphology and proportion of PU/PVDF blend was observed and analysed by SEM, and the relatively better proportion of PU/PVDF blend for hollow fiber membrane preparation was confirmed. The mechanism of the pore formation principle of PU/PVDF blend hollow fiber membrane was also discussed. Results show that the PU/PVDF blend hollow fiber membrane with good permeation could be prepared by melt-spinning and cold stretching method with the principle of interface separation of polymer blend.

关 键 词：PU/PVDF共混物 熔体纺丝 中空纤维膜 

分 类 号：TS102.528.1[轻工技术与工程—纺织工程] TQ028.8[轻工技术与工程—纺织科学与工程]