Preparation and Performance of Chlorine-Resistant Polyamide Composite Nanofiltration Membranes

被引：0
|
作者：
Sun J. [1 ,2 ]
Tang H. [1 ,2 ]
Zhou W. [1 ,2 ]
Zhou M. [1 ,2 ]
机构：
[1] Key Laboratory of Fiber Materials and Processing Technology of Zhejiang Provincial, Zhejiang Sci-Tech University, Hangzhou
[2] National and Local Joint Engineering Laboratory for Textile Fiber Materials and Processing Technology, Zhejiang Sci-Tech University, Hangzhou
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2021年 / 37卷 / 09期
关键词：
Chlorine resistance; Glutaraldehyde; M-aminoacetanilide; Nanofiltration membrane;
D O I：
10.16865/j.cnki.1000-7555.2021.0218
中图分类号：
学科分类号：
摘要：
Polyamide composite nanofiltration membranes were prepared by interfacial polymerization of piperazine (PIP) and trimesoyl chloride (TMC) as monomer. Polyamide membrane composite nanofiltration membranes were cross-linked with glutaraldehyde (GA), and then immersed in m-aminoacetyl. The graft reaction of aniline produced modified composite nanofiltration membranes with chlorine resistance. Characterizations by FT-IR and solid surface Zeta potential analyzer(SSZPA) prove that meta-aminoacetanilide is grafted to the surface of active layers, which improves the positive chargeability of the composite films. SEM shows that the modified films are more non-porous and rough. The contact angle measuring instrument(CAMI) shows that the modification improves the hydrophilicity of the composite membrane surface. The chlorine resistance test shows that the rejection rate of the modified membranes drops from 94.04% to 91.81% after being immersed in NaClO solution with a pH of 4 and a concentration of 1000 mg/L at room temperature for 10 h, and the rejection rate of the PIP-TMC composite nanofiltration membranes is decreased from 94.60% to 78.85%. © 2021, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：157 / 164and174
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