Positively charged nanofiltration membrane based on cross-linked polyvinyl chloride copolymer

被引：96

作者：

Fang, Li-Feng ^{[1
,2
]}

Zhou, Ming-Yong ^{[1
]}

Cheng, Liang ^{[2
]}

Zhu, Bao-Ku ^{[1
]}

Matsuyama, Hideto ^{[2
]}

Zhao, Shuaifei ^{[2
,3
]}

机构：

[1] Zhejiang Univ, Minist Educ, Engn Res Ctr Membrane & Water Treatment, Dept Polymer Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

[2] Kobe Univ, Ctr Membrane & Film Technol, Dept Chem Sci & Engn, Nada Ku, Rokkodaicho 1-1, Kobe, Hyogo 6578501, Japan

[3] Macquarie Univ, Dept Environm Sci, Sydney, NSW 2109, Australia

来源：

JOURNAL OF MEMBRANE SCIENCE | 2019年 / 572卷

关键词：

Polyvinyl chloride; Nanofiltration membrane; Positively charged membrane; Crosslinking; Quaternization; HOLLOW-FIBER MEMBRANES; LOW-PRESSURE WATER; GRAPHENE OXIDE; PERFORMANCE; FABRICATION; REMOVAL; TRANSPORT; SURFACE; LAYER; DYES;

D O I：

10.1016/j.memsci.2018.10.054

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A polyvinyl chloride (PVC)-based positively-charged nanofiltration membrane was fabricated from polyvinyl chloride-graft-poly(N, N-dimethylaminoethyl methacrylate) by heating and crosslinking treatment. We characterized the surface chemical compositions, membranes structures, surface hydrophilicity and surface charges of the prepared membrane. The estimated membrane pore diameter is 1.98 nm and the pore diameters are in the range of 0.5-2.0 nm. The membrane exhibits excellent water permeability (9.3 L m(-2) h(-1) bar(-1)) and salt rejection (93.1% with MgCl2 solution). Both the heating treatment and crosslinking reaction can diminish the pore size of the precursor membrane. The membrane hydrophilicity is improved after quaternization, leading to higher water permeability compared with the membrane treated by heating only. Moreover, surface quaternization and crosslinking offer the membrane excellent pressure resistance and long-term stability. The prepared nanofiltration membrane has great promise in many applications including water softening and multivalent ion remov al.

引用

页码：28 / 37

页数：10

共 51 条

[1] Rejection and modelling of sulphate and potassium salts by nanofiltration membranes: neural network and Spiegler-Kedem model [J].