Polymer surfaces with reversibly switchable ordered morphology

被引：47

作者：

Cui, L ^{[1
]}

Xuan, Y ^{[1
]}

Li, X ^{[1
]}

Ding, Y ^{[1
]}

Li, BY ^{[1
]}

Han, YC ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Grad Sch, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

来源：

LANGMUIR | 2005年 / 21卷 / 25期

关键词：

D O I：

10.1021/la051376z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Honeycomb macroporous films fabricated by the "breath figures" method were composed of poly2-vinylpyridine (P2VP) distributed in the holes of polystyrene (PS). The porous films exhibited reversible behavior responding to water and different solvent vapors. When the porous film was treated with water, the honeycomb pattern would change to the hexagonal islandlike pattern. Once heated to remove the water, the honeycomb pattern emerged again. When the porous film was exposed to different solvent vapors, the same reversible process appeared. Carbon disulfide (CS2), toluene (TOL), and tetrahydrofuran (THF) solvent vapors induced the honeycomb pattern into the ordered islandlike pattern, and ethanol, chloroform, methyl ethyl ketone (MEK), and dimethylformamide (DMF) solvent vapors made the islandlike pattern come back to the honeycomb pattern. The hygroscopic property of P2VP and the polymer-solvent interaction are the driving force for the reversibly switchable morphology. The appropriate control of the hole depth is very crucial in determining the reversible changes.

引用

页码：11696 / 11703

页数：8

共 36 条

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