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Effect of organic base polyethylene polyamine on the structure and properties of poly(vinylidene fluoride) ultrafiltration membranes

Authors： HUA Helin，LIU Xianhui，LI Na，FU Caijie

Units： Department of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China

KeyWords： poly(vinylidene fluoride)(PVDF); polyethylene polyamine; immerse precipitation phase inversion; property characterization

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2013,33(5):30-33

Abstract：

Organic base of polyethylene polyamine was added directly to the casting solution of poly(vinylidene fluoride) (PVDF). PVDF ultrafiltration membrane was prepared by using L-S phase inversion technique. Then, the structure and properties of the prepared membranes were characterized by means of IR, SEM, contact angle test, et al. The results indicated that dehydrogenation fluoride reaction on the surface of PVDF ultrafitration membranes was produced by the addition of polyethylene polyamine. Wetting of ultrafitration membranes was improved significantly. Flux of membranes was increased constantly as rising the contents of polyethylene polyamine. The BSA retention rate was unchanged essentially at the content of polyethylene polyamine no more than 6%, while the ultrafiltration membrane retention rate was decreased significantly at the content of polyethylene polyamine more than 6%.

Funds：

国家自然科学基金（20906044）；江西省自然科学基金（2010GQH0109）；江西省科技攻关项目（2010BGB00500）；江西省教育厅项目（GJJ11525）

AuthorIntro：

华河林，男，博士，副教授，主要膜接枝改性和膜分离应用的研究．E-mail: huahelin@nchu.edu.cn

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