Laccase-catalyzed homo-polymer of GAL and cross-linking with PEI to enhance hydrophilicity and antifouling property of PTFE flat membrane

被引：32

作者：

Li, Chengcai ^{[1
]}

He, Zehua ^{[2
]}

Wang, Feng ^{[1
,3
]}

Zhu, Hailin ^{[1
,3
]}

Guo, Yuhai ^{[1
]}

Chen, Meiyu ^{[4
]}

机构：

[1] Zhejiang Sci Tech Univ, Zhejiang Prov Key Lab Fiber Mat & Mfg Technol, Hangzhou 310018, Peoples R China

[2] Univ Illinois, Coll Engn, Dept Mat Sci & Engn, Urbana, IL 61801 USA

[3] Zhejiang Kertice Hitech Fluor Mat Co LTD, Huzhou 313000, Peoples R China

[4] Xian Polytech Univ, Sch Text Sci & Engn, Xian 710048, Shaanxi, Peoples R China

来源：

PROGRESS IN ORGANIC COATINGS | 2019年 / 132卷

基金：

中国国家自然科学基金;

关键词：

Polytetrafluoroethylene flat membrane; Poly(gallic acid); Polyethylenimine; Hydrophilicty; Antifouling property; Oil/water separation; SURFACE MODIFICATION; OIL; SEPARATION; STRATEGY; FABRICATION; EMULSIONS; ACID; FILM;

D O I：

10.1016/j.porgcoat.2019.03.038

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

To improve hydrophility and antifouling property of Polytetrafluoroethylene flat microfiltration membrane, a novel and facile method was developed to modify the membrane via the polymer of Laccase-catalyzed selfpolymerization of Gallic acid and cross-linked with Polyethylenimine, then the surface micro/nanostructures was treated by (2,3-epoxypropoxy)-propytrimethoxysilane. The surface chemical composition, surface morphology, hydrophilicity and antifouling property of the PTFE flat membrane were investigated by ATR-FTIR, XPS, FESEM, water contact angle, pure water flux measurements, respectively. After using this low-cost and simple modification method, PTFE flat membranes were endowed with excellent hydrophilicity, high pure water flux and antifouling property. Besides, the modified PTFE flat membrane could be applied to the separation of oil-in-water emulsion with an ultrahigh efficiency 98.2% and also shows durable oil resistance and antifouling performance, making the membrane easy to reuse. Finally, the surface stability of the modified membrane was studied and the mineralized membrane showed excellent acid resistant ability. Therefore, this facile strategy holds attractive potential practical application in water environmental remediation.

引用

页码：429 / 439

页数：11

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