Self-Restoration of Underwater Low Adhesive Superoleophobicity on Shape Memory Polymer Arrays

Dongjie Zhang,1,2

Xinyu Wang,1

Yaoxu He,1

Yujie Feng,2

Zhongjun Cheng,1*Email

Yingbin Song,1

Dongdong Hu1 

Yuyan Liu1*Email

1State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China

2State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No 73 Huanghe Road, Harbin, Heilongjiang, 150090, China

Abstract

Self-restoration property is a good candidate to prepare stable underwater superoleophobicity. However, almost all existing research interest focus on surface superhydrophobicity in air. Herein, a new underwater superoleophobic low adhesion surface with self-healing capacity is reported through constructing hierarchical micro/nanostructure on epoxy shape memory polymer (ESMP) and modifying (3-Aminopropyl) triethoxysilane (APTES). After a simple heating process, the crushed surface microstructure and low adhesive superoleophobicity which are damaged under the external pressure can be recovered spontaneously, indicating that the prepared surface has a great self-healing property. The self-healing property can be attributed to the excellent shape memory effect of ESMP and good hydrophilicity of APTES. Finally, the obtained surface is further used as a rewritable platform in the storage and transportation of oil droplets in water. This work introduces the wetting control of ESMP into water media, which extends the application range of ESMP and opens up some new viewpoints in constructing underwater self-healing superoleophobic surfaces. Keywords: self-restoration; low adhesion; underwater superoleophobicity; shape memory polymer; microstructure.

Self-Restoration of Underwater Low Adhesive Superoleophobicity on Shape Memory Polymer Arrays