西北师范大学学报（自然科学版）2025，Vol.61Issue(3)：21-28,8.DOI:10.16783/j.cnki.nwnuz.2025.03.003
水解聚丙烯腈基纳滤膜制备及染料分离性能
Preparation of integrally skinned hydrolyzed polyacrylonitrile nanofiltration membrane and its separation performance for dyes
摘要
Abstract
Herein,hydrolyzed polyacrylonitrile(H-PAN)was used as membrane matrix material to prepare polymer dope solution composed of H-PAN and graphene oxide(GO).Meanwhile,aqueous solution of PEI was used as coagulation bath,and an ion complexion reaction involving non-solvent induced phase inversion process was applied to prepare an integrally skinned nanofiltration membrane.The water flux and dye rejection of nanofiltration membrane firstly increase and then decrease as the increment of GO content in dope solution and PEI concentration in coagulation bath.The optimal membrane has a 99.6%rejection rate for Congo Red under the optimal membrane preparation conditions of GO content of 0.01%in dope solution and PEI concentration of 0.4%in coagulation bath.The results show that the performance of membrane breaks through the trade-off relationship between membrane permeability and selectivity,and the membrane has an improved separation performance for Congo Red when compared with the virgin H-PAN membrane.This study offers a one-step method for preparing a nanofiltration membrane that could be used for fractionation of dye and salt mixture and/or removing dyes from wastewater.关键词
非溶剂诱导相转化法/络合反应/水解聚丙烯腈/染料分离Key words
non-solvent induced phase inversion/complexion reaction/hydrolyzed polyacrylonitrile/dye separation分类
化学工程引用本文复制引用
柳春丽,胡皖皖,张艺馨,朱磊,王海燕..水解聚丙烯腈基纳滤膜制备及染料分离性能[J].西北师范大学学报（自然科学版）,2025,61(3):21-28,8.基金项目
国家自然科学基金资助项目(52203001) （52203001）
兰州理工大学红柳优秀青年基金资助项目(062209) （062209）
甘肃省自然科学基金资助项目(23JRRA816) （23JRRA816）
