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Study on hydrophilic modified and separation performance of PTFE flat membrane by polyacrylic acid post-crosslinked with bisamino organosilicone

Authors： LI Chengcai1, WANG Feng1,2, ZHU Hailin1,2, GUO Yuhai1

Units： 1 Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Xiasha Campous, Hangzhou 310018, China 2 Zhejiang Kertice Hi-Tech Fluor-Material Co., LTD, Huzhou 313000, China

KeyWords： PTFE flat membrane，hydrophilic modified, post-cross linked, polyacrylic acid(PAA), bisamino organosilicone 9300

ClassificationCode：TF.TQ028.8

year,volume(issue):pagination： 2018,38(3):83-90

Abstract：

The polytetrafluoroethylene (PTFE) flat membrane was hydrophilic modified by the post-cross linked reaction of polyacrylic acid (PAA) with bisamino organosilicone 9300 and used in the treatment of crystal grinding wastewater. The effects of 9300 concentrations, PAA / 9300 mass ratio, reaction temperature and time on the morphology, the surface chemical structure, hydrophilicity and separation performance of PTFE flat membrane were investigated. The results show that the membrane fibers are smoother and have been found few particles, and the N, O and Si elements appeared on the surface and cross section of the modified membrane. The hydrophilic groups such as carboxyl group and amino group appeared on the surface of the membrane. The surface contact angle of the modified PTFE membrane was from 136±2.1° to 30.35±1.3°, crystal grinding wastewater turbidity removal rate of 99.91%, the modification effectively inhibited the pollution of protein adsorption.

Funds：

国家自然科学基金（21406207）

AuthorIntro：

李成才（1990-），男，安徽阜阳人，硕士研究生，主要研究方向为PTFE和PVDF膜亲水化改性及应用； E-mail：lcc692716700@163.com；通讯作者：郭玉海，研究员，E-mail：gyh@zstu.edu.cn

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