Effect of cellulose nanocrystals on bacterial cellulose hydrogel for oil-water separation

被引：39
作者：
Li, Zhaoqian [1 ]
Wang, Mengling [1 ,2 ]
Li, Yang [1 ,2 ]
Ren, Junming [1 ,2 ]
Pei, Chonghua [1 ]
机构：
[1] Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Peoples R China
[2] Southwest Univ Sci & Technol, Sch Mat & Chem, Mianyang 621010, Peoples R China
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2023年 / 304卷
关键词：
Bacterial cellulose; Crystallinity; Cellulose nanocrystals; Flowrate; Oil -water separation; UNDERWATER SUPEROLEOPHOBIC HYDROGEL; IN-OIL; COATED MESH; X-RAY; CRYSTALLINITY; MEMBRANES; FABRICATION; EMULSIONS; SURFACE; SYSTEM;
D O I：
10.1016/j.seppur.2022.122349
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Cellulose hydrogels reveal potential application for oil-water emulsion separation. However, they still suffer from lower flux, resulting from their stable hydration layers. In this work, bacterial cellulose (BC)/cellulose nano -crystals (CNC) hydrogels were prepared via the immersion method. The hydrogels also showed good superhydrophilicity/underwater-superoleophobicity. They can separate oil-in-water and water-in-oil emulsions with separation efficiency > 97.6 %. More importantly, the addition of CNC improved the crystallinity of BC hydrogels and decreased the accessibility to water molecules, which increased the water flux of hydrogels. This work provides a feasible strategy to enhance the separation flowrate for oil-water emulsions.
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页数：8
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