Nanostructures and nanoporosity in thermoset epoxy blends with an amphiphilic polyisoprene-block-poly (4-vinyl pyridine) reactive diblock copolymer

被引：34

作者：

Guo, Qipeng ^{[1
]}

Liu, Jing ^{[1
]}

Chen, Ling ^{[2
]}

Wang, Ke ^{[2
]}

机构：

[1] Deakin Univ, Ctr Mat & Fibre Innovat, Geelong, Vic 3217, Australia

[2] Inst Mat Res & Engn, Singapore 117602, Singapore

来源：

POLYMER | 2008年 / 49卷 / 07期

基金：

澳大利亚研究理事会;

关键词：

nanoporous epoxy; thermoset blend; block copolymer;

D O I：

10.1016/j.polymer.2008.02.033

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Nanostructured thermoset blends were prepared based on a bisphenol A-type epoxy resin and an amphiphilic reactive diblock copolymer, namely polyisoprene-block-poly(4-vinyl pyridine) (PI-P4VP). Infrared spectra revealed that the P4VP block of the diblock copolymer reacted with the epoxy monomer. However, the non-reactive hydrophobic PI block of the diblock copolymer formed a separate microphase on the nanoscale. Ozone treatment was used to create nanoporosity in nanostructured epoxy/PI-P4VP blends via selective removal of the PI microphase and lead to nanoporous epoxy thermosets; disordered nanopores with the average diameter of about 60 nm were uniformly distributed in the blend with 50 wt% PI-P4VP. Multi-scale phase separation with a distinctly different morphology was observed at the air/sample interface due to the interfacial effects, whereas only uniform microphase separated morphology at the nanoscale was found in the bulk of the blend. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1737 / 1742

页数：6

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