高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (11): 2538-2544.doi: 10.7503/cjcu20200485

• 高分子化学 • 上一篇    下一篇

液滴在超疏水形状记忆微阵列表面上定向/非定向滚动的可逆调控

王武, 来华, 成中军(), 刘宇艳()   

  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
  • 收稿日期:2020-07-23 出版日期:2020-11-10 发布日期:2020-11-06
  • 通讯作者: 成中军 E-mail:chengzhongjun@iccas.ac.cn;liuyy@hit.edu.cn
  • 作者简介: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(21674030)

Reversible Regulation of Droplet Directional/anti-directional Rolling on Superhydrophobic Shape Memory Microarray Surface

WANG Wu, LAI Hua, CHENG Zhongjun(), LIU Yuyan()   

  1. Ministry of Industry and Information Technology Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage,School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150001,China
  • Received:2020-07-23 Online:2020-11-10 Published:2020-11-06
  • Contact: CHENG Zhongjun E-mail:chengzhongjun@iccas.ac.cn;liuyy@hit.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(21674030)

摘要:

利用3D打印、 模板赋形和表面修饰的方法, 制备出具有竖直结构的超疏水形状记忆微阵列. 该微阵列的竖直状态和倾斜状态能够基于形状记忆效应进行可逆调控. 当微阵列的结构发生改变, 液滴在表面的滚动状态也随之发生变化. 液滴在竖直的微阵列上表现出非定向滚动特征, 即液滴向微阵列两侧运动的滚动角是一致的. 在倾斜的微阵列上, 液滴则表现出定向运动的功能, 即液滴沿着微阵列倾斜方向上的滚动角要小于逆着阵列倾斜方向的滚动角. 因此, 本文通过调控微阵列形态实现了对液滴定向/非定向滚动的可逆调控.

关键词: 超疏水, 形状记忆, 微阵列, 可逆调控

Abstract:

Superhydrophobic shape memory microarray with upright structure was fabricated by 3D printing, template molding and surface modification. The upright and tilted structure of the microarray can be controlled reversibly based on the polymer’s shape memory ability. With the change of microarray structure, the rolling state of droplets on the microarray surface can also be changed. The droplet shows anti-directional transport on the upright microarray, that is, the rolling angle of droplet moving toward both sides of the array is consistent. However, on the tilted microarray, the droplet shows directional sliding, that is, the rolling angle of the droplet along the bending direction of the array is smaller than that against the bending direction of the microarray. Therefore, the microarray achieves reversible regulation of droplet directional/anti-directional rolling.

Key words: Superhydrophobicity, Shape memory, Microarray, Reversible regulation

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