Thiol–ene click reaction on cellulose sponge and its application for oil/water separation. Issue 33 (6th April 2017)

• Record Type: Journal Article
• Authors: Wu, Zhenzhen; Li, Yingzhan; Zhang, Linping; Zhong, Yi; Xu, Hong; Mao, Zhiping; Wang, Bijia; Sui, Xiaofeng
• Is Part Of: RSC advances. Volume 7:Issue 33(2017)
• Page Start: 20147
• Page End: 20151
• Publication Date: 2017-04-06
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra00847c
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Thiol–ene click reaction was employed to synthesize a flexible hydrophilic cellulose sponge. The sponge can be circular used in oil/water mixture (emulsion) separation and hold separation efficiency high separation efficiency. Abstract : Thiol–ene click reaction was employed to synthesize a flexible hydrophilic cellulose sponge. The reactive vinyl group was introduced by silanization treatment with vinyl-trimethoxysilicane (VTMO), and the resulting silylated cellulose sponge (SCS) can be subsequently functionalized with various thiol-containing compounds such as 3-mercaptopropionic acid, via temperature induced thiol–ene reactions. The hydrophilic cellulose sponge thus prepared displayed an excellent mechanical strength of 70 KPa at 80% compression strain. The prepared sponge features hydrophilic and underwater oleophobic properties and was used in gravity-driven removal of oil from oil-in-water emulsions and oil/water mixtures with a high separation efficiency. The separation efficiency remained 100% after 10 cycles for an oil/water mixture and 95% after 6 cycles for an oil-in-water emulsion.