A FACILE WAY TO PREPARE A SPONGE/CELLULOSE FIBER COMPOSITE AND ITS APPLICATION IN OIL/WATER SEPARATION

被引：0

作者：

Cui, Yabing ^{[1
]}

Wu, Xing ^{[2
]}

Hu, Wenxuan ^{[2
]}

Feng, Jia ^{[1
]}

Li, Zhiguo ^{[1
]}

Zhou, Guowei ^{[1
]}

Cai, Yiming ^{[2
]}

Lv, Weiyang ^{[3
]}

Du, Miao ^{[2
]}

机构：

[1] State Grid Zhejiang Elect Power Co Ltd, Hangzhou 310014, Peoples R China

[2] Zhejiang Univ, Dept Polymer Sci & Engn, MOE Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Peoples R China

[3] Zhejiang Sci Tech Univ, Sch Mat Sci & Engn, Hangzhou 310018, Peoples R China

来源：

CELLULOSE CHEMISTRY AND TECHNOLOGY | 2022年 / 56卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

cellulose fiber; sponge; composite; oil/water separation; IN-WATER EMULSION; SURFACE WETTABILITY; CELLULOSE; FABRICATION; EFFICIENT; MEMBRANES; SPONGE; MESHES;

D O I：

10.35812/CelluloseChemTechnol.2022.56.17

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Developing efficient filtering materials, with both high permeation flux and rejection, by a low-cost and facile way, for oil/water separation has been the goal that mankind pursues. In this paper, we report a porous poly(melamine formaldehyde) (PMF) sponge with superwettability and controlled pore size obtained simply, by introducing hydrophilic fibers, i.e. cellulose fibers. Driven by concentration or pressure difference, the fibers diffuse into the sponge body, and the pore size of the sponge can be regulated by changing only the fiber content. These hydrophilic fibers endow the sponge with inherent superhydrophilicity and underwater superoleophobicity. The resulting modified sponges, with varied pore sizes, can effectively separate a wide range of oil/water mixtures (including layered oil/water mixtures, surfactant-free oil/water emulsion and the surfactant-stabilized emulsion) solely by gravity, with high permeation flux and satisfactory oil rejection. It is expected that such a facile way will provide a low-cost and easily scaled-up method to construct a series of filtering materials for highly efficient separation of target oil/water mixtures.

引用

页码：177 / 189

页数：13