The influence of molecular weight on nanoporous polymer films

被引：156

作者：

Xu, T

Kim, HC

DeRouchey, J

Seney, C

Levesque, C

Martin, P

Stafford, CM

Russell, TP ^{[1
]}

机构：

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

[2] Frontier Reg High Sch, S Deerfield, MA USA

[3] Wilbraham Middle Sch, Wilbraham, MA USA

[4] Boston Latin Acad, Boston, MA USA

来源：

POLYMER | 2001年 / 42卷 / 21期

基金：

美国国家科学基金会;

关键词：

diblock copolymers; nanopores; microdomains;

D O I：

10.1016/S0032-3861(01)00376-7

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Asymmetric diblock copolymers of polystyrene (PS) and poly(methylmethacrylate) (PMMA), PS(S-b-MMA), having cylindrical microdomains of PMMA, are model systems to generate nanoporous thin films. With controlled interfacial interactions or applied external electric fields, the cylindrical microdomains can be oriented normal to the surface. Exposure to deep UV radiation degrades the PMMA and crosslinks the PS matrix. After rinsing with a selective solvent, a nanoporous film is obtained. By changing the molecular weight, smooth porous films with hexagonal arrays of pores having diameters ranging from 14 to 50 nm were obtained. The results show that molecular weight is a convenient, simple means of controlling pore diameter. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：9091 / 9095

页数：5

共 24 条

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