不同亲水性EVAL微孔膜的制备与表征  

Preparation and characterization of hydrophilic EVAL microporous membranes

作　　者：孟莎莎[1,2] 张玉忠[1,2] 林立刚[1,2] 丁晓莉[1,2] 李泓[1,2] 

机构地区：[1]天津工业大学材料科学与工程学院,天津300160 [2]天津工业大学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：《天津工业大学学报》2011年第1期5-7,11,共4页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(50973083;50473025;21006070);高等学校博士学科点专项科研基金(20091201120002)

摘　　要：以4种不同乙烯基含量的乙烯-乙烯醇共聚物(EVAL)为原料,用相转化法制备了亲水性微孔膜,研究乙烯基含量对膜的结构和性能的影响,并考察膜的抗污染性能.结果表明:随着乙烯基含量的降低,材料中的羟基含量增多,膜的接触角降低,亲水性增强,纯水通量增大;膜的场发射扫描电子显微镜(FESEM)照片表明,膜表面开孔密集而均匀;EVAL膜与PES膜的通量衰减对比实验表明,EVAL微孔膜的抗污染能力较好,结果与膜的亲水性分析一致.Hydrophilic microporous membranes were prepared through nonsolvent-induced phase separation,using ethylene-vinyl alcohol copolymer（EVAL） with different ethylene content as raw materials.The effect of the ethylene content on the performances and structural properties of the EVAL membrane was investigated,and the anti-fouling performance of EVAL membrane was researched.The results showed that EVAL membrane with lower ethylene content and more hydroxyl had better hydrophiicity and larger pure water flux;many pores were observed on the surface from FESEM micrographs;flux reduction experiment showed that EVAL microporous membrane had better anti-fouling performance than PES membrane.

关 键 词：EVAL 亲水性微孔膜 抗污染 

分 类 号：TS102.54[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]