Polymer surface modification: Topography effects leading to extreme wettability behavior

被引：69

作者：

Lee, Jung Ah ^{[1
]}

McCarthy, Thomas J. ^{[1
]}

机构：

[1] Univ Massachusetts, Polymer Sci & Engn Dept, Amherst, MA 01003 USA

来源：

MACROMOLECULES | 2007年 / 40卷 / 11期

关键词：

D O I：

10.1021/ma070061i

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The surface oxidation of polyethylene (PE) and the surface reduction of Teflon (FEP) were studied with regard to the surface topography of the film samples that were used and the resulting water wettability. Anodized aluminum membranes were used as nanomolds to impart fibrillar topographies to the polymer surfaces. Water contact angles of smooth PE (theta(A)/theta(R) = 93 degrees/75 degrees) decreased to theta(A)/theta(R) = 68 degrees/46 degrees upon oxidation with potassium chlorate/sulfuric acid solution. Smooth FEP film samples changed from theta(A)/theta(R) = 111 degrees/100 degrees to theta(A)/theta(R) = 64 degrees/45 degrees upon reduction with sodium naphthalide solution. Contact angles of PE and FEP increased to 172 degrees/160 degrees and 174 degrees/172 degrees, respectively, upon introduction of the fibrillar topography and both decreased to similar to 0 degrees/0 degrees after oxidation and reduction, respectively. That topography can be used as a tool in polymer surface modification is emphasized.

引用

页码：3965 / 3969

页数：5

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