不同极性微量选择性溶剂对聚合物膜表面浸润性的控制

高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (11): 2301.

不同极性微量选择性溶剂对聚合物膜表面浸润性的控制

赵天艺^1,2, 张勇¹, 刘欢¹, 王树涛¹, 张志杰¹, 江雷¹

1. 中国科学院化学研究所, 分子科学中心, 北京 100190;
2. 中国科学院研究生院, 北京 100049

收稿日期:2009-03-17 出版日期:2009-11-10 发布日期:2009-11-10
通讯作者: 张志杰, 男, 博士, 研究员, 博士生导师, 主要从事含硅聚合物新材料的研究. E-mail: zhangzj@iccas.ac.cn; 江雷, 男, 博士, 研究员, 博士生导师, 主要从事仿生纳米材料研究. E-mail: jianglei@iccas.ac.cn
基金资助:
国家自然科学基金(批准号: 20571077)资助.

Control of Large-scale Wettability Using Micro-amounts of Selective Solvents

ZHAO Tian-Yi^1,2, ZHANG Yong¹, LIU Huan¹, WANG Shu-Tao¹, ZHANG Zhi-Jie^1*, JIANG Lei^1*

1. Center of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received:2009-03-17 Online:2009-11-10 Published:2009-11-10
Contact: ZHANG Zhi-Jie, E-mail: zhangzj@iccas.ac.cn; JIANG Lei, E-mail: jianglei@iccas.ac.cn
Supported by:
国家自然科学基金(批准号: 20571077)资助.

摘要/Abstract

摘要：

通过在双亲性三嵌段共聚物( PEO-PDMS-PEO)的溶液中加入不同极性的微量选择性溶剂, 分别制得胶束和反胶束微粒, 不同组分的溶液涂膜后显示出明显的浸润性差异. 采用透射电镜、原子力显微镜和X射线光电子能谱分别对胶束和反胶束微粒在溶液中和成膜后的结构以及表面化学组成进行了表征, 结果表明, 不同选择性溶剂所形成的胶束和反胶束微粒的结构差异, 导致了涂膜的表面化学组成的不同, 最终影响其表面浸润性.

关键词: 嵌段共聚物; 聚合物膜; 微量选择性溶剂; 浸润性控制

Abstract:

A simple approach was used to control the large-scale wettability of polymer-coated surfaces merely by adding micro-amounts of selective solvents of different polarity to tri-block copolymer solutions. An amphiphilic tri-block copolymer, poly(ethylene oxide)-poly(dimethylsiloxane)-poly(ethylene oxide)(PEO-PDMS-PEO), was used to form micelles and reverse micelles by adding micro-amounts of a selective solvent to the initial solution. The micellar and reverse micellar film coatings show different wettability from hydrophilic to hydrophobic, and even from superhydrophilic to superhydrophobic when micro-scale roughness is involved. The structures of the micelles and reverse micelles were studied by transmission electron microscopy and ato-mic force microscopy, and the surface chemical composition of the film coatings was determined by X-ray photoelectron spectroscopy(XPS). The results reveal that the main cause of differences in wettability is the diffe-rent surface chemical compositions induced by the different structures of micelles and reverse micelles.

Key words: Block copolymer; Polymer film; Micro-amount selective solvent; Control of wettability

TrendMD:

赵天艺, 张勇, 刘欢, 王树涛, 张志杰1, 江雷. 不同极性微量选择性溶剂对聚合物膜表面浸润性的控制. 高等学校化学学报, 2009, 30(11): 2301.

ZHAO Tian-Yi, ZHANG Yong, LIU Huan, WANG Shu-Tao, ZHANG Zhi-Jie*, JIANG Lei. Control of Large-scale Wettability Using Micro-amounts of Selective Solvents. Chem. J. Chinese Universities, 2009, 30(11): 2301.

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