Indexed by:期刊论文
Date of Publication:2017-08-25
Journal:膜科学与技术
Included Journals:CSCD
Volume:37
Issue:4
Page Number:20-26
ISSN No.:1007-8924
Key Words:聚丙烯腈;相转化法;不对称膜;共混;添加剂
Abstract:将普通分子量聚丙烯腈(C-PAN,Mw=18 000)与超高分子量聚丙烯腈(UHMW-PAN,Mw=1 780 000)共混,采用干—湿相转化法制备不对称共混膜.考察了聚合物浓度、共混比、凝胶浴温度、刮膜厚度、添加剂浓度等对膜结构及性能的影响.采用扫描电镜、纯水通量和BSA截留率等测试手段对所制备膜的结构及性能进行表征.结果表明:共混比及成膜过程对共混膜的结构及性能有重要影响.当铸膜液浓度为12％,C-PAN/UHMW-PAN共混比为2∶3,凝胶浴温度为40℃,刮膜厚度为100 μm时,共混膜的纯水通量为580 L/(m2·h),BSA截留率为99.99％.随添加剂浓度增加,交联膜大孔结构减少,海绵状孔结构增加,导致其纯水通量降低,BSA截留率增加,膜的结构可以通过上述因素进行结构调控.
Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Main positions:化工学院副院长
Gender:Female
Alma Mater:大连理工大学
Degree:Doctoral Degree
School/Department:化工学院
Discipline:Membrane Science and Technology. Chemical Technology. Chemistry and Chemical Engineering of Functional
Business Address:西校区化工综合楼A201
Contact Information:lilin121@dlut.edu.cn
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