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Synthesis of poly( p ‐phenylenediamine‐ co‐ o ‐aminophenol)/multi‐walled carbon nanotube composites by emulsion polymerization
Author(s) -
Aridoss Gopalakrishnan,
Kim Min Sung,
Son Se Mo,
Kim Jong Tae,
Jeong Yeon Tae
Publication year - 2010
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1514
Subject(s) - materials science , copolymer , carbon nanotube , composite material , emulsion polymerization , x ray photoelectron spectroscopy , polymerization , dispersion (optics) , emulsion , nanocomposite , nanometre , chemical engineering , polymer chemistry , polymer , physics , optics , engineering
Organic–inorganic composites composed of electrically conducting copolymer p ‐phenylenediamine‐ co‐ o ‐aminophenol and carboxylic acid functionalized multi‐walled carbon nanotubes [poly( p PD‐co‐ o AP)/c‐MWNTs] were prepared via in situ emulsion pathway using sodium dodecyl sulphate (SDS) as an emulsifier and potassium persulphate as an oxidant. Acid functionalized MWNTs were used as cores in the formation of tubular shells of the composites. TEM and FESEM analysis showed that a tubular layer of coated copolymer film of several nanometer thicknesses is present on the c‐MWNTs surfaces. FT‐IR spectra endorsed the formation of composites. TGA results indicated that the decomposition temperatures of composites were higher than the bare copolymer. UV‐visible absorption spectra of diluted colloidal dispersion of composites were similar to those of the bare copolymer. The composites were also confirmed by XRD and XPS. Room‐temperature conductivity increases with an increasing fraction of c‐MWNTs. Copyright © 2009 John Wiley & Sons, Ltd.