Temperature-sensitive porous membrane production through radiation co-grafting of NIPAAm on/in PVDF porous membrane

被引：31

作者：

Liu, Qi ^{[1
]}

Zhu, Zhiyong ^{[1
]}

Yang, Xiaomin ^{[1
]}

Chen, Xiliang ^{[1
]}

Song, Yufeng ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

来源：

RADIATION PHYSICS AND CHEMISTRY | 2007年 / 76卷 / 04期

关键词：

PVDF porous membrane; NIPAAm monomer; radiation grafting; temperature sensitivity;

D O I：

10.1016/j.radphyschem.2006.03.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

N-isopropylacrylamide (NIPAAm) monomer was grafted on and in poly(vinylidene fluoride) (PVDF) micro-pore membrane by gamma-irradiation. The influence of irradiation and reaction conditions on the grafting yield was investigated in detail. The chemical structure of NIPAAm-grafted PVDF (NIPAAm-g-PVDF) membrane was characterized by Fourier transform infrared spectra and X-ray photoelectron spectra measurements. The morphology of the sample surface as well as the cross-section before and after grafting was characterized by scanning electron microscope. The temperature sensitive properties of the membrane were monitored by measuring the conductance as well as the water flux through the sample thickness. The results show that the membrane exhibits clearly temperature-sensitive permeability to water as expected, i.e. the permeability of water changes dramatically as the temperature goes over the lower critical solution temperature of NIPAAm. (C) 2006 Elsevier Ltd. All rights reserved.

引用

页码：707 / 713

页数：7

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