高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (8): 1559.doi: 10.7503/cjcu20160231

• 高分子化学 • 上一篇    下一篇

形状记忆聚合物表面水下油黏附性的可逆调控

吕通1, 成中军2(), 来华1, 张恩爽1, 刘宇艳1()   

  1. 1. 哈尔滨工业大学化工与化学学院, 新能源转换与储存关键材料技术工业和信息化部重点实验室, 哈尔滨 150001
    2. 哈尔滨工业大学基础与交叉科学研究院, 哈尔滨 150001
  • 收稿日期:2016-04-11 出版日期:2016-06-13 发布日期:2016-06-13
  • 作者简介:

    联系人简介: 成中军, 男, 博士, 副研究员, 主要从事表面浸润性研究. E-mail: chengzhongjun@iccas.ac.cn .刘宇艳, 女, 博士, 教授, 主要从事形状记忆聚合物研究. E-mail: liuyy@hit.edu.cn

  • 基金资助:
    国家自然科学基金(批准号: 21304025, 51573035)资助

Reversible Controlling Underwater Oil Adhesion on Shape Memory Polymer Surface

LÜ Tong1, CHENG Zhongjun2,*(), LAI Hua1, ZHANG Enshuang1, LIU Yuyan1,*()   

  1. 1. Ministry of Industry and Information Technology Key Laboratory of Critical Materials Technology for New Energy Conversion and Storge, School of Chemistry and Chemical Engineering,Harbin Institute of Technology, Harbin 150001, China
    2. Natural Science Research Center, Academy of Fundamental and Interdisciplinary Sciences,Harbin Institute of Technology, Harbin 150001, China
  • Received:2016-04-11 Online:2016-06-13 Published:2016-06-13
  • Contact: CHENG Zhongjun,LIU Yuyan E-mail:chengzhongjun@iccas.ac.cn;liuyy@hit.edu.cn

摘要:

采用模板法在形状记忆聚合物表面获得一种具有形状记忆特征的表面微结构, 在氧等离子作用下, 表面呈现低黏附的水下超疏油特性. 在外压作用下, 表面微结构发生坍塌, 失去水下超疏油性, 同时表面对油滴呈高黏附特征. 在120 ℃热处理后, 表面微结构恢复到了原始状态, 在等离子进一步作用下, 表面即可恢复到最初的低黏附水下超疏油状态. 因此通过外压、 热处理及等离子作用即可实现对表面微结构及其水下油黏附性能的可逆调控. 研究表明, 表面不同的微结构状态赋予表面不同的黏附性能, 在原始表面液滴处于低黏附的Cassie态, 而在坍塌结构表面水滴处于高黏附的Wenzel态.

关键词: 形状记忆聚合物, 微结构, 水下超疏油, 黏附性, 可逆调控

Abstract:

A surface with shape memory microstructures was prepared by the template method, after O2 plasma. The surface shows low adhesive underwater superoleophobicity. It is found that under the external pressure, the surface would lose the underwater superoleophobicity for the destroyed microstructure, and meanwhile, the surface becomes high adhesive to the oil droplet. After heating the surface at 120 ℃ and plasma action, both surface microstructure and the low adhesive superhydrophobicity can be recovered. The results indicate that the adhesive property can be controlled reversibly by controlling the surface microstructures. Different microstructures results in different wetting states, as a result, the surface shows different adhesions. On the surface with hierarchical structures, oil droplet resides in the low adhesive Cassie state, while on the crushed surface, the oil droplet resides in the high adhesive Wenzel state.

Key words: Shape memory polymer, Microstructure, Underwater superoleophobic, Adhesion, Reversible controlling

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