天津工业大学学报2017，Vol.36Issue(2)：1-5,5.DOI:10.3969/j.issn.1671-024x.2017.02.001
高分子浓度对NIPS结合气体生成制备的中空纤维膜结构和性能的影响
Influence of polymer concentration on structure and performance of hollow fiber membranes prepared by NIPS cooperated with gas generation
摘要
Abstract
In order to prepare hollow fiber membranes (HFMs) with small diameters, HFMs were prepared from polysulfone dimethylacetamide solution mixed with sodium borohydride as gas producing agent extrude through a stainless steel needle as single orifice spinneret. The effects of polymer concentration on the structure and performance of HFMs were investigated. The results showed that synergy between hydrogen generation from hydrolysis of sodium borohydride and nonsolvent induce phase separation(NIPS) process would benefite the fabrication of HFMs with good hollow bore structure and highly porous. As the polymer concentration increased from 15%to 25%, the fin-ger-like structures near the dense skin surface and the hollow bore structure of HFMs disappeared gradually , the mean pore size of HFMs increased from 11 . 2 nm to 21 . 6 nm , the effective surface porosity decreased from 6435.1 m-1 to 54.8 m-1, the overall porosity of HFMs decreased from 84.5%to 78.3%, and Congo red rejections increased from 93.0%to 97.4%.关键词
中空纤维膜/非溶剂致相分离/水解制氢/单孔喷丝头Key words
hollow fiber membrane(HFM)/nonsolvent induce phase separation(NIPS)/hydrogen generation from hydrol-ysis/single orifice spinneret分类
轻工纺织引用本文复制引用
陈英波,张玉,刘慧强,胡晓宇,刘冬青,张宇峰..高分子浓度对NIPS结合气体生成制备的中空纤维膜结构和性能的影响[J].天津工业大学学报,2017,36(2):1-5,5.基金项目
国家自然科学基金面上资助项目(51373119) （51373119）
天津市科技支撑计划重点资助项目(16YFZCSF00330) （16YFZCSF00330）
