Enhancing the performance of PVDF membranes by hydrophilic surface modification via amine treatment

被引：90

作者：

Sun, Chenggui ^{[1
]}

Feng, Xianshe ^{[1
]}

机构：

[1] Univ Waterloo, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2017年 / 185卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

PVDF membrane; Surface modification; Hydrophilicity; Antifouling performance; HOLLOW-FIBER MEMBRANE; COMPOSITE PVDF/SPES MEMBRANES; POLY(VINYLIDENE FLUORIDE); ULTRAFILTRATION MEMBRANES; MICROFILTRATION MEMBRANES; ANTIFOULING PROPERTY; MICROPOROUS MEMBRANE; POROUS MEMBRANES; TIO2; SEPARATION;

D O I：

10.1016/j.seppur.2017.05.022

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Poly(vinylidene fluoride) (PVDF) is widely used to fabricate filtration membranes in the form of hollow fibers and flat sheets. However, the potential problems associated with its hydrophobicity (e.g., tube sheet leak-through and surface fouling) have compromised the performance of PVDF membranes. In this study, we proposed a method for surface hydrophilization of PVDF membranes via amine treatment. The effects of the concentration of the amine solution, treatment temperature and treatment time on the surface hydrophilicity, antifouling performance and permeation properties of the modified membranes were investigated. Energy dispersive X-ray analysis (EDX) and Fourier-transform infrared (FTIR) spectroscopy were used to analyze the elements of the membrane surfaces. It was shown that up to 57% of the fluorine on the membrane surface could be eliminated by the amine treatment. As a result, the hydrophilicity and antifouling performance of PVDF membranes could be significantly enhanced. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：94 / 102

页数：9

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