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Silica microcapsules and microtubes prepared from rod‐like and needle‐like polyaniline templates
Author(s) -
Jung WooHyuk,
Choi YeonSil,
Moon JungMin,
Han SangCheol,
Kim Yang,
Lee JangOo
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.31567
Subject(s) - scanning electron microscope , tetraethyl orthosilicate , thermogravimetric analysis , materials science , transmission electron microscopy , polyaniline , fourier transform infrared spectroscopy , chemical engineering , calcination , polymer chemistry , nanotechnology , composite material , polymer , chemistry , organic chemistry , catalysis , engineering , polymerization
Rod‐like or needle‐like particles of polyanilinium p ‐toluene sulfonate have been used as templates for the formation of silica microcapsules or microtubes. Thus, an alkaline aqueous suspension of the needles was treated with tetraethyl orthosilicate to form silica‐coated needles, which were subsequently calcined to remove the polyanilinium templates. The rod‐like or needle‐like polyaniline particles, their silica‐coated derivatives and silica microcapsules or microtubes have been characterized by thermogravimetric analysis, Fourier transformation infrared spectroscopy, scanning electron microscopy (SEM), field emission scanning electron microscopy (FE‐SEM), and transmission electron microscopy. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010