Organic-inorganic polypyrrole-surface modified SiO2 hybrid nanocomposites: a facile and green synthetic approach

被引：27

作者：

Yuvaraj, Haldorai ^{[1
,2
]}

Shim, Jae-Jin ^{[1
]}

Lim, Kwon Taek ^{[2
]}

机构：

[1] Yeungnam Univ, Sch Display & Chem Engn, Gyongsan 712749, Gyeongbuk, South Korea

[2] Pukyong Natl Univ, Div Image Sci & Engn, Pusan 608739, South Korea

来源：

POLYMERS FOR ADVANCED TECHNOLOGIES | 2010年 / 21卷 / 06期

关键词：

conducting polymer; silica; surface grafting; supercritical carbon dioxide; hybrid nanocomposite; SUPERCRITICAL CARBON-DIOXIDE; POLYMERIZATION; COMPOSITES; PARTICLES; CO2;

D O I：

10.1002/pat.1448

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Organic-inorganic hybrid nanocomposites composed of conductive polypyrrole (PPy) and surface modified silica (SiO2) were successfully prepared through an in situ chemical oxidative polymerization in supercritical carbon dioxide (scCO(2)). SiO2 nanoparticles were surface modified using 3-methacryloxypropyltrimethoxysilane (MPTMS) in order to disperse well in the medium. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) showed that the SiO2 nanoparticles were encapsulated into the polymer. UV-visible spectra of the diluted colloidal dispersions of PPy/SiO2 hybrid nanocomposites were similar to those of PPy system. Fourier transform infrared spectroscopy (FT-IR) suggested the strong interaction between PPy and SiO2. Surface characterizations of nanocomposites were described by X-ray photoelectron spectroscopy (XPS). The nanocomposites synthesized in scCO2 have been shown to possess higher electrical conductivity and thermal stability. Copyright (C) 2009 John Wiley & Sons, Ltd.

引用

页码：424 / 429

页数：6

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