Solvent annealing thin films of poly(isoprene-b-lactide)

被引：103

作者：

Cavicchi, KA

Berthiaume, KJ

Russell, TP ^{[1
]}

机构：

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

[2] Gateway Reg High Sch, Huntington, MA 01050 USA

来源：

POLYMER | 2005年 / 46卷 / 25期

基金：

美国国家科学基金会;

关键词：

copolymer; solvent; annealing;

D O I：

10.1016/j.polymer.2005.09.072

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 use of solvent annealing to control the microdomain orientation and long-range ordering in poly(isoprene-b-D,L-lactide) thin films was investigated using scanning force microscopy and grazing incidence small angle X-ray scattering (GISAXS). Benzene and chloroform were used as annealing solvents. Both were found to improve the long-range order in the films. Additionally, at high concentrations of chloroform in the film, a perpendicular orientation of cylinders was observed where the solvent was able to mediate interfacial interactions sufficiently to prevent a preferential segregation of one of the blocks to the surface. In situ GISAXS measurements made during solvent swelling and evaporation allowed an examination of the film morphology over a wide range of solvent concentrations providing it efficient route to optimize conditions for morphology control by solvent annealing (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：11635 / 11639

页数：5

共 20 条

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