期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 301, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2022.122031
关键词
Poly(vinylidene fluoride); Poly(ethylene-co-vinyl alcohol); Polymer blend; Hydrophilic modification; Thermally induced phase separation
In this study, PVDF/EVOH blend hollow fiber membranes were fabricated using thermally induced phase separation technology. The surface enrichment of EVOH during the fabrication process improved the hydrophilicity, tensile strength, and water permeability of the membranes. Compared to the pristine membrane, the EVOH blend membrane showed better antifouling properties.
In this study, thermally induced phase separation (TIPS) technology was used to fabricate the PVDF/EVOH blend hollow fiber membranes using water-soluble mixed diluents. An interconnected bulk structure was formed by L-L phase separation for both the pristine membrane and blend membrane. The surface enrichment for EVOH during the cooling process enhanced the hydrophilicity of prepared hollow fiber membranes. It was found that the tensile strength of the blend membrane significantly increased from 2.6 MPa to 8.8 MPa. The variation of the membrane structure made the water permeability increase from 60 L m-2 h-1 bar- 1 to 287 L m-2 h-1 bar- 1 for the optimized blend membrane. Compared with the pristine membrane, EVOH blend membrane exhibited higher antifouling properties for BSA, HA, and oil-in-water emulsion filtrations.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据