HAN Xiaoyu, TAO Zhenfei^a, WANG Yunli

(a. School of Chemistry and Chemical Engineering, b. Key Laboratory of Biomass Fiber and Ecological Dyeing and Finishing,c. State Key Laboratory of New Textile Materials and Advanced Processing Technology, Wuhan Textile University, Wuhan 430200, China)

Abstract：As industrialisation continues to accelerate, the problem of water pollution is becoming increasingly serious, with pollution caused by oil spills seriously damaging the marine ecosystem. Therefore, it is one of the hot research topics nowadays to find out how to separate oil and water in an environmentally friendly and efficient way. Sodium stearate was used to modify the silk powder, and the effects of parameters such as the amount of sodium stearate and reaction time on the modification effect were investigated. At the same time, a series of measurements were used to characterize the microscopic morphology and structure of the silk powder before and after modification, and on this basis, the application in oil-water separation was explored. The results show that the modified silk powder has better oil-water separation effect than the original powder, and the oil absorption of the modified silk powder is 2.224 3 g/g, which is 35% higher than that before modification. After adsorption of oil, the modified silk powder will agglomerate into small balls and float on the water surface, facilitating subsequent separation.

Keywords：silk powder; sodium stearate; oil-water separation; oil absorption; hydrophobicity

Get Citation：HAN X Y, TAO Z F, WANG Y L. Application of sodium stearate modified silk powder in oil-water separation[J]. China Powder Science and Technology, 2023, 29(4): 130-137.

DOI：10.13732/j.issn.1008-5548.2023.04.013

Received：2022-09-01,Revised：2022-12-31,Online：2023-06-13 17:06。

Funding Project：湖北省中央引导地方科技发展专项基金项目,编号:2020ZYYD038;湖北省重点研发计划项目,编号:2021BAA068。

First Author：韩晓玉(1997—),女,硕士研究生,研究方向为丝素粉体改性。E-mail: 3026968989@qq.com。

Corresponding Author：王运利(1979—),男,教授,博士,研究方向为纺织品新型染整技术。E-mail: ylwang@wtu.edu.cn。