高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (09): 2129-2134.doi: 10.3969/j.issn.0251-0790.2012.09.044

• 高分子化学 • 上一篇    

新型抑菌聚砜超滤膜的制备及性能

王雪, 徐佳, 蒋钰烨, 高学理, 高从堦   

  1. 中国海洋大学化学化工学院, 青岛 266100
  • 收稿日期:2011-10-14 出版日期:2012-09-10 发布日期:2012-08-14
  • 通讯作者: 高从堦,男,教授,中国科学院院士,主要从事膜法水处理技术研究.E-mail:gaocjie@mail.hz.zj.cn徐佳,女,博士,讲师,主要从事膜法海水淡化预处理技术研究.E-mail:Jiapipi2@163.com E-mail:gaocjie@mail.hz.zj.cn; Jiapipi2@163.com
  • 基金资助:

    高等学校博士学科点专项科研基金(批准号: 20090132120007)和中央高校基本科研业务费专项资金(批准号: 201113023)资助.

Preparation and Properties of New Antibacterial Polysulfone Ultrafiltration Membranes

WANG Xue, XU Jia, JIANG Yu-Ye, GAO Xue-Li, GAO Cong-Jie   

  1. Ocean University of China, College of Chemistry and Chemical Engineering, Qingdao 266100, China
  • Received:2011-10-14 Online:2012-09-10 Published:2012-08-14

摘要:

将辣素功能结构单体N-(4-羟基-3-甲氧基苯甲基)丙烯酰胺(HMBA)和甲基丙烯酸甲酯(MMA)通过自由基引发合成出抑菌型共聚物P(H-co-M), 通过红外吸收光谱和热重分析证实了共聚物的结构. 采用共混法将共聚物引入聚砜(PSF)铸膜液中, 通过浸没沉淀相转化法制备了新型抑菌超滤膜. 考察了P(H-co-M)含量对超滤膜分离性能及抑菌性能的影响. 结果表明, 当P(H-co-M)质量分数为0.5%时, 超滤膜分离性能最佳, 对5 mg/L腐殖酸溶液的稳定水通量为122.2 L/(m2·h), 截留率为84.4%, 与未添加P(H-co-M)的超滤膜相比, 分别提高了19.2%和9.2%. 改性超滤膜具有较强的抑菌性能, 当P(H-co-M)含量为1.0%时, 抑菌率最大(约80.7%).

关键词: 超滤膜, 聚砜, 辣素, 抑菌性

Abstract:

A novel antibacterial polysulfone (PSF) ultrafiltration (UF) membrane with capsaicin derivatives function structure was prepared. First, copolymer P(H-co-M) through the radical cause was polymerized with N-(4-hydroxyl-3-methoxyl phenmethyl)acrylamide(HMBA) and methyl methacrylate (MMA) as unconverted monomer. P(H-co-M) was confirmed by the infrared absorption spectrum(FTIR) and thermo gravimetric analysis. Then, the copolymer P(H-co-M) was introduced to PSF casting solution by the blending method, and the antibacterial UF membrane was prepared through the immersion precipitation phase-inversion method. The effects of copolymer content in the casting solution on the separation performance and antibacterial property of the UF membrane were investigated. When P(H-co-M) content was 0.5%(mass fraction), the modified UF membrane exhibited the best separation performance with flux of 122.2 L/(m2·h) and rejection of 84.4% for a 5 mg/L humic acid solution, which increased by 13.5% and 9.2% compared to the PSF UF membrane, respectively. In addition, the antibacterial performance was improved significantly. When P(H-co-M) content was 0.5%, the antibacterial rate was as high as 58.8%; When P(H-co-M) content was 1.0%, the largest antibacterial rate was obtained (80.7%). The excellent performance of the modified UF membrane indicates that the novel antibacterial UF membranes with capsaicin derivatives function structure open a new field in the high-efficient membrane materials.

Key words: Ultrafiltration membrane, Polysulfone, Capsaicin, Bacteriostasis

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