Building a smart surface with converse temperature-dependent wettability based on poly(acrylamide-co-acrylonitrile)
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Updated: Dec 28, 2025
Preparation of Thermoresponsive Nanostructured Surfaces for Tissue Engineering
Published on: March 1, 2016
Longbin Chen1, Tao Yang1, Yue Niu1
1Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China. haoli@scnu.edu.cn wangyao@m.scnu.edu.cn and National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, P. R. China.
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.
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