聚偏氟乙烯中空纤维膜的脱氧性能  

Deoxidizing performance of polyvinylidene fluoride hollow fiber membrane

作　　者：郭培丽[1] 陈华艳[1] 吕晓龙[1] 武春瑞[1] 张庆磊[1] 刘捷[1] 

机构地区：[1]天津工业大学,生物化工研究所,中空纤维膜材料与膜过程省部共建国家重点实验室培育基地,天津300160

出　　处：《膜科学与技术》2012年第4期6-10,共5页Membrane Science and Technology

基　　金：天津市重点基金课题(09JCZDJC26300);天津市科技计划项目(09ZCKFSH02600)

摘　　要：采用聚偏氟乙烯(PVDF)中空纤维膜对水中的溶解氧进行了脱氧研究,考察不同内径、壁厚、长度以及不同表面结构的PVDF中空纤维膜对脱氧效率的影响.结果表明,膜的内径、长度和膜的表面结构对脱氧效率的影响很大,内径越小,组件越长,脱氧效率越好,疏松的海绵状孔结构更利于脱氧.壁厚对中空纤维膜的脱氧效率影响不显著.结合中空纤维膜的力学性能,内凝固浴为70%N,N-二甲基乙酰胺(DMAc)水溶液,内径0.3mm,壁厚0.15mm的中空纤维膜,更适于脱氧.The deoxidizing performance of polyvinylidene fluoride （PVDF） hollow fiber membrane was studied with the purpose of improving deoxidizing efficiency. The influence of the inner diameter, wall thickness, module length and the surface morphology on the deoxidizing efficiency was investigated. The results indicate that the inner diameter, the module length and the surface morphology of the membrane have a great influence on the deoxidizing efficiency. Smaller inner diameter and longer module induce higher deoxidizing efficiency. The loose sponge structure of membrane surface leads to higher deoxidizing efficiency. The effect of the wall thickness of PVDF membrane on the deoxidizing efficiency might be neglected. The hollow fiber membrane with internal coagulant of 70% DMAc, inner diameter of 0. 3 mm and wall thicknss of 0. 15 mm would be a better deoxidizing membrane according to the deoxidizing efficiency and mechanics performance of membrane.

关 键 词：脱氧 PVDF 内径 壁厚 长度 表面结构 

分 类 号：TQ085.4[化学工程] TQ028.8