The change from hydrophilicity to hydrophobicity of HEC/PAA complex membrane for water-in-oil emulsion separation: Thermal versus chemical treatment

被引：17

作者：

Babiker, Dafaalla M. D. ^{[1
]}

Zhu, Liping ^{[1
]}

Yagoub, Hajo ^{[1
]}

Lin, Feng ^{[1
]}

Altam, Ali A. ^{[1
]}

Liang, Songmiao ^{[2
]}

Jin, Yan ^{[2
]}

Yang, Shuguang ^{[1
]}

机构：

[1] Donghua Univ, Coll Mat Sci & Engn, Ctr Adv Low Dimens Mat, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China

[2] Vontron Membrane Technol Co Ltd, R&D Ctr, Guiyang 550000, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2020年 / 241卷

关键词：

Hydroxyethyl cellulose; Poly(acrylic acid); Hydrophobicity; Thermal treatment; Chemical treatment; Oil/water separation; GRAPHENE OXIDE; FILMS; COMPOSITE; NONWOVEN;

D O I：

10.1016/j.carbpol.2020.116343

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Recently, the growing environmental concerns and economic demands drive the need to develop effective solutions for the treatment of oily wastewater, especially for oil/water emulsions. In this work, hydroxyethyl cellulose (HEC) and poly(acrylic acid) (PAA) are selected to form a complex membrane on the surface of poly (ethylene terephthalate) (PET) nonwoven via layer-by-layer assembly for separation of water-in-oil emulsions. In order to obtain a hydrophobic surface, two post-treatment methods, thermally and chemically induced crosslinking, are applied to modify the hydrogen-bonded HEC/PAA complex membrane. The properties of the two treated HEC/PAA-PET membranes, including surface morphology, chemical structure, chemical composition, thermal stability, mechanical property, and membrane wettability are systematically studied and compared to each other. When the membranes are applied as oil filters to treat water-in-oil emulsions with different concentrations, both of the modified membranes show excellent separation efficiencies with a more than 99.4% rejection for all tested water-in-oil emulsions.

引用

页数：9

共 38 条

[1] A novel composite of alginate aerogel with PET nonwoven with enhanced thermal resistance [J].