期刊
POLYMER
卷 52, 期 2, 页码 409-414出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2010.11.025
关键词
Conducting polymer; Core-shell composite particle; Diffusion control
资金
- National Basic Research Program of China [2007CB925101]
- National Natural Science Foundation of China [20973092]
By means of the Swelling-Diffusion-Interfacial-Polymerization Method (SDIPM), we successfully coated polyaniline (PANi) onto micrometre-size, uncharged polystyrene (PS) particles, which were synthesized by dispersion polymerization. After initially forming aniline-swollen PS particles, diffusion of the aniline toward the aqueous phase was controlled through a slow addition of hydrochloric acid, eventually leading to its polymerization on the substrate particle surface. The resultant PS/PANi composite particles have been extensively characterized using scanning electron microscope (SEM), transmission electron microscope (TEM), Fourier transform infrared (FTIR) and Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and C, H. and N elemental microanalysis. At very low aniline/PS weight ratio, the thin, uniform, but intact PANi overlayer was obtained owing to its unique inside-out formation mechanism and considerably high efficiency of aniline to transform into the resultant composites. As increasing the initial amount of addition of aniline, the uniform size and well-defined morphology of the PS/PANi core-shell composite particles could still be maintained with a relatively high PANi mass loading yield. (C) 2010 Elsevier Ltd. All rights reserved.
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