Polypyrrole/γ-Fe2O3 magnetic nanocomposites synthesized in supercritical fluid

被引：67

作者：

Yuvaraj, Haldorai ^{[1
]}

Woo, Min Hee ^{[1
]}

Park, Eun Ju ^{[1
]}

Jeong, Yeon Tae ^{[1
]}

Lim, Kwon Taek ^{[1
]}

机构：

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

来源：

EUROPEAN POLYMER JOURNAL | 2008年 / 44卷 / 03期

关键词：

gamma-Fe2O3; polypyrrole; supercritical carbon dioxide; nanocomposites; magnetic materials;

D O I：

10.1016/j.eurpolymj.2008.01.007

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polypyrrole/iron oxide (PPy/gamma-Fe2O3) nanocomposites were synthesized by in situ oxidative polymerization of pyrrole in the presence of surface modified gamma-Fe2O3 in supercritical carbon dioxide (scCO(2)). The structural properties of nanocomposite particles thus obtained were characterized by FT-IR, thermal analysis (TGA), X-ray diffraction (XRD), and transmission electron microscopy (TEM). It was found that ca. 50 urn gamma-Fe2O3 nanoparticles were well dispersed in PPy powder in TEM pictures. X-ray photoclectron spectroscopy (XPS) analysis also support that all gamma-Fe2O3 nanoparticles are elicapsulated by PPy. Magnetic property of the nanocomposites was measured by SQUID, which indicated that the nanocomposites are superparamagnetic. The effects of different loadings of gamma-Fe2O3 on the polymerization were also investigated. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：637 / 644

页数：8

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