文献类型：期刊文献

英文题名：Preparation and modification of cellulose sponge and application of oil/water separation

作者：Meng, Xu[1,2,3];Dong, Yanyan[1];Zhao, Yajun[1];Liang, Liping[1]

机构：[1]Shaoxing Univ, Coll Text & Garment, Coll Life Sci, Shaoxing, Peoples R China;[2]Shaoxing Univ, Key Lab Clean Dyeing & Finishing Technol Zhejiang, Shaoxing 312000, Peoples R China;[3]Zhejiang Sub Ctr Natl Carbon Fiber Engn Technol R, Shaoxing 312000, Peoples R China

年份：2020

卷号：10

期号：68

起止页码：41713

外文期刊名：RSC ADVANCES

收录：SCI-EXPANDED(收录号：WOS:000591071500039)、、EI(收录号：20204809549644)、Scopus(收录号：2-s2.0-85096652285)、WOS

基金：The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (Grant No. 51703130) and the International Science and Technology Cooperation Project of Shaoxing University (Grant No. 2019LGGH1004).

语种：英文

外文关键词：Calcite - Calcium carbonate - Carbonate minerals - Chlorine compounds - Contact angle - Etching - Hydrochloric acid - Hydrophobicity - Separation - Silanes - Sodium hydroxide - Urea

外文摘要：This work presents a facile preparation and modification of cellulose sponge with hydrophobic/oleophilic surface wetting properties. The modification method included several steps: sodium hydroxide (NaOH) and urea were introduced to dissolve cellulose, after which calcium carbonate (CaCO3) and epichlorohydrin were added into the solution for formation of a hydrogel. Finally, the cellulose sponge was obtained through hydrochloric acid (HCl) etching of CaCO3, and octadecyl trichlorosilane (OTS) self-assembly modification. The prepared cellulose sponge exhibited hydrophobicity with a water contact angle of 153.5 degrees, and oleophilicity with an oil contact angle of 0 degrees. The prepared cellulose sponge demonstrated a separation efficiency as high as 92% for various types of oil/water mixtures. The prepared cellulose sponge could achieve continuous separation with the assistance of a peristaltic pump. The material will be a promising candidate to be used in oil/water separation.