高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (3): 567.

• 研究论文 • 上一篇    下一篇

一种新型亲水性有机-无机渗透蒸发分离膜——聚丙烯酰胺复合膜的制备

周立志1, 王星1, 程晓维2, 龙英才2, 平郑骅1   

  1. 1. 复旦大学高分子科学系,教育部聚合物分子工程重点实验室;
    2. 复旦大学化学系,上海 200433
  • 收稿日期:2004-02-18 出版日期:2005-03-10 发布日期:2005-03-10
  • 通讯作者: 平郑骅(1942年出生),男,教授,博士生导师,主要从事分离膜的研究.E-mail:zhping@fudan.edu.cn E-mail:zhping@fudan.edu.cn
  • 基金资助:

    国家“九七三”发展基金项目(批准号:2003CB615702)资助.

A Novel Hydrophilic Organo-inorganic Pervaporation Separation Membrane ——Preparation of Polyacrylamide Composits Membrane

ZHOU Li-Zhi1, WANG Xing1, CHENG Xiao-Wei2, LONG Ying-Cai2, PING Zheng-Hua1   

  1. 1. Key Laborotary of Polymer Molecular Engineering of Education Ministry, Department of Macromolecular Science, Fudan University;
    2. Department of Chemistry, Fudan University, Shanghai 200433, China
  • Received:2004-02-18 Online:2005-03-10 Published:2005-03-10

摘要: 将纳米二氧化硅微孔膜用γ-(甲基丙烯酰氧基)丙基三甲氧基硅烷处理,再通过自由基聚合接枝丙烯酰胺单体制备出一种新型的亲水性有机-无机复合膜.用TGA测定了单体在二氧化硅粉末上的接枝率;用SEM和AFM观察了接枝反应前后膜表面形态的变化;系统研究了接枝单体浓度对膜的渗透蒸发分离性能的影响.结果表明,这种膜用于醇水和丙烯酸水溶液的分离有很好的选择性和渗透性;在丙烯酰胺质量分数为3%的溶液中接枝的膜有较好的分离性;溶液浓度和操作温度对膜渗透性的影响非常特殊.

关键词: 有机-无机复合膜, 二氧化硅, 渗透蒸发, 聚丙烯酰胺

Abstract: A novel hydrophilic organo-inorganic composite membrane was prepared by graft-polymerization of acrylamide on a microporous silica membrane, preliminary silylated by γ-(methyl acryloyl) propyl tri-methoxysilane. The surface properties and morphology of the membrane were analyzed by means of SEM, AFM, FTIR and TGA. The influence of monomer concentration on membrane performances for dehydration of ethanol was systematically studied. It was found that the membrane was very selective and permeable for dehydration of alcohol and acrylic acid. The membrane grafted in 3% of AM has good separation performances. The influence of feed concentration and operation temperature on membrane permeation is special.

Key words: Organo-inorganic composite membrane, Silica, Pervaporation, Polyacrylamide

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