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Fabrication and characterization of multilayer SiO 2 /polymethacrylic acid/polypyrrole composites and hollow polypyrrole microspheres
Author(s) -
Wang Wenqin,
Lu Linchao,
Chen Tianyang,
Rao Mian
Publication year - 2012
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.36642
Subject(s) - polypyrrole , materials science , methacrylic acid , thermogravimetric analysis , fourier transform infrared spectroscopy , polymerization , polymer chemistry , scanning electron microscope , nanocomposite , x ray photoelectron spectroscopy , poly(methacrylic acid) , monomer , in situ polymerization , pyrrole , chemical engineering , composite material , polymer , organic chemistry , chemistry , engineering
Methacrylic acid was polymerized on the 3‐(methacryloxy)propyl trimethoxysilane‐modified silica core. The carboxylic acid groups of polymethacrylic acid (PMAA) not only provide the “active‐sites” for growth of the pyrrole monomers but also act as doping acids for polypyrrole (PPy). By in situ polymerization route, SiO 2 /PMAA/PPy multilayer composites and hollow PPy microspheres with controllable shell thickness were fabricated. The morphologies, sizes, and structures of the nanocomposites were investigated in detail by transmission electron microscopy, scanning electron microscopy, Fourier‐transform infrared spectra, X‐ray photoelectron spectroscopy, and thermogravimetric analysis. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012