Poly(vinylidene fluoride-co-hexafluoro propylene) membranes prepared via thermally induced phase separation and application in direct contact membrane distillation

被引：0

作者：

Jun Pan ^{[1
,2
,3
]}

Lixun Zhang ^{[1
,2
,3
]}

Zhaohui Wang ^{[1
,2
,3
]}

ShiPeng Sun ^{[1
,2
,3
]}

Zhaoliang Cui ^{[1
,2
,3
]}

Naser Tavajohi ^{[4
]}

机构：

[1] State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University

[2] National Engineering Research Center for Special Separation Membrane,Nanjing Tech University

[3] Jiangsu National Synergetic Innovation Center for Advanced MaterialsSICAM,Nanjing Tech University

[4] Department of Chemistry,Ume?

来源：

Frontiers of Chemical Science and Engineering | 2022年 / 16卷 / 05期

关键词：

poly(vinylidene fluoride)-co-hexafluoropropylene; thermally induced phase separation; non-toxic diluent; direct contact membrane distillation;

D O I：

暂无

中图分类号：

TQ051.893 [];

学科分类号：

摘要：

A non-toxic and environmentally safe diluent,acetyl tributyl citrate,was employed to prepare poly(vinylidene fluoride)-co-hexafluoropropylene membranes via thermally induced phase separation.Effects of the polymer concentration on the phase diagram,membrane morphology,hydrophobicity,pore size,porosity and mechanical properties(tensile stress and elongation at break) were investigated.The results showed that the pore size and porosity tended to decrease with increasing polymer concentration,whereas the contact angle,liquid entry pressure and mechanical properties showed the opposite trend.In direct contact membrane distillation operation with 3.5 wt-% sodium chloride solution as the feed solution,the prepared membranes performed high salt rejection(> 99.9%).Furthermore,the prepared membranes retained excellent performance in long-term stability tests regarding the permeate flux and salt rejection.

引用

页码：720 / 730

页数：11