Building a smart surface with converse temperature-dependent wettability based on poly(acrylamide-co-acrylonitrile). Issue 19 (18th February 2020)

• Record Type: Journal Article
• Authors: Chen, Longbin; Yang, Tao; Niu, Yue; Mu, Xin; Gong, Yelei; Feng, Yancong; de Rooij, Nicolaas Frans; Wang, Yao; Li, Hao; Zhou, Guofu
• Is Part Of: Chemical communications. Volume 56:Issue 19(2020)
• Page Start: 2837
• Page End: 2840
• Publication Date: 2020-02-18
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc09479b
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A sensitive, adjustable, and reversible smart surface with converse temperature-dependent wettability was constructed from an upper critical solution temperature-type copolymer. Abstract : A smart surface with converse temperature-dependent (CTD) wettability was fabricated from an upper critical solution temperature-type (UCST-type) poly(acrylamide- co -acrylonitrile) (P(AAm- co -AN)) copolymer. The obtained surface exhibits a remarkable and reversible hydrophobic–hydrophilic transition depending on temperature with a high response rate. The static water contact angle of the surface decreases from 103° ± 2° to 60° ± 1° as the temperature increases from 30 °C to 80 °C. Further, the wettability of the UCST-type surface shows a positive linear relationship between wettability and temperature. This study for the first time provides an UCST-type smart surface with wettability that decreases by over 35° as the temperature increases by only 20 °C.