Reaction-induced microphase separation in polybenzoxazine thermosets containing poly(N-vinyl pyrrolidone)-block-polystyrene diblock copolymer

被引：26

作者：

Hu, Di

Zheng, Sixun ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Polymer Sci & Engn, Shanghai 200240, Peoples R China

来源：

POLYMER | 2010年 / 51卷 / 26期

关键词：

Polybenzoxazine; Poly(N-vinyl pyrrolidone)-block-polystyrene; diblock copolymer; Reaction-induced microphase separation; RING-OPENING POLYMERIZATION; EPOXY-RESIN; BLOCK-COPOLYMERS; THERMAL-PROPERTIES; BENZOXAZINE MONOMERS; AMPHIPHILIC DIBLOCK; PHASE-BEHAVIOR; DIAMINE BLENDS; NANOSTRUCTURES; MORPHOLOGIES;

D O I：

10.1016/j.polymer.2010.10.047

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(N-vinyl pyrrolidone)-block-polystyrene diblock copolymer (PVPy-b-PS) was synthesized via sequential reversible radical-fragmentation transfer polymerization with S-1-phenylethyl O-ethyl-xanthate as a chain transfer agent. The block copolymer was incorporated into polybenzoxazine to access the nanostructures in the thermosets. The nanostructures in the thermosets were investigated by means of transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS). It was found that disordered and/or ordered PS nanophases were formed in the PBa thermosets. It is judged that the formation of nanophases followed the mechanism of reaction-induced microphase separation in terms of the miscibility of the subchains of the diblock copolymer (viz. PVPy and PS) with polybenzoxazine after and before curing reaction. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：6346 / 6354

页数：9

共 68 条

[1] Novel organic-inorganic hybrids prepared from polybenzoxazine and titania using sol-gel process [J].