Radiation synthesis and characterization of PVDF-g-N-IPAAm temperature-sensitive membranes

LIU Qi; ZHU Zhiyong; YANG Xiaomin; CHEN Xiliang; SONG Yufeng

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Radiation synthesis and characterization of PVDF-g-N-IPAAm temperature-sensitive membranes

更新时间：2023-03-30

- Radiation synthesis and characterization of PVDF-g-N-IPAAm temperature-sensitive membranes
- Journal of Radiation Research and Radiation Processing Vol. 24, Issue 2, Pages: 97-101(2006)
- 作者机构：
  
  1.中国科学院上海应用物理研究所　上海201800
- 作者简介：
- 基金信息：
  
  中国科学院《西部之光》和上海应用物理研究所《引进人才项目》(90120432)
- DOI：
  CLC：
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LIU Qi, ZHU Zhiyong, YANG Xiaomin, et al. Radiation synthesis and characterization of PVDF-g-N-IPAAm temperature-sensitive membranes. [J]. Journal of Radiation Research and Radiation Processing 24(2):97-101(2006)
DOI：

LIU Qi, ZHU Zhiyong, YANG Xiaomin, et al. Radiation synthesis and characterization of PVDF-g-N-IPAAm temperature-sensitive membranes. [J]. Journal of Radiation Research and Radiation Processing 24(2):97-101(2006) DOI：

摘要

用 γ共辐射接枝的方法，将,N,-异丙基丙烯酰胺（,N,-isopropylacrylamide，,N,-IPAAm）接枝到聚偏氟乙烯（Poly vinylidene fluoride，PVDF）微孔膜上。通过扫描电子显微镜（Scanning electron microscopy，SEM）、傅立叶转换红外光谱（Fourier transform infrared，FT-IR）和X光电子能谱（X-ray photoelectron spectroscopy，XPS）技术对微孔膜的接枝情况进行了表征，并同时通过接触角、电导和水通量测试研究了接枝微孔膜的表面改性、渗水性能和温敏性能。结果表明，通过共辐射接枝方法成功将,N,-IPAAm接枝到了PVDF微孔膜的表面及孔内，由此改善了微孔膜的亲水性，并使其具有明显温度敏感性能，即在低临界溶解温度（Lower critical solution temperature，LCST）上下其微孔膜的水通量发生显著变化。

Abstract

N,-IPAAm monomers were grafted in/on Poly vinylidene fluoride (PVDF) micro-pore membrane by γ-irradiation. The grafting was characterized by Scanning electron microscopy (SEM), Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) measurements. Contact angle on the surface, electrical conductance and water penetration through the grafted membranes were tested. The results show that the ,N,-isopropylacrylamide (,N,-IPAAm) monomers were successfully grafted on and inside the PVDF porous membrane. The hydrophilicity of the grafted membrane was improved and the membrane exhibits clearly temperature-sensitive permeability to water as expected, i.e., the permeability of water changes dramatically as the temperature goes above the lower critical solution temperature (LCST) of ,N,-IPAAm.

关键词

聚偏氟乙烯微孔膜辐射接枝温敏性N-异丙基丙烯酰胺

Keywords

Poly vinylidene fluoride (PVDF)Radiation graftingTemperature sensitivityN-isopropylacrylamide

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