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Polymerization of anilinium–DBSA in the presence of clay particles: kinetics and formation of core‐shell structures
Author(s) -
Jia W.,
Segal E.,
Narkis M.,
Siegmann A.
Publication year - 2002
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.144
Subject(s) - polymerization , polyaniline , materials science , talc , mica , dispersion polymerization , polymer chemistry , chemical engineering , aqueous solution , dispersion (optics) , cationic polymerization , kinetics , composite material , polymer , chemistry , organic chemistry , physics , optics , quantum mechanics , engineering
This paper is an extension of previous work on polymerization of anilinium–DBSA (dodecylbenzenesulfonic acid) in an aqueous dispersion in the presence of mica or talc silicate particles. The presence of mica or talc particles greatly accelerates the polymerization process of anilinium‐DBSA and an encapsulated structure is formed as well. The catalytic effect of various metallic cations which exist in the chemical compositions of mica or talc on the polymerization kinetics of anilinium‐DBSA was investigated. The conductivity results along with microscopy observations prove a well formed encapsulated structure for the polyaniline/mica composites, but less for the polyaniline/talc composites. The anilinium‐DBSA complex and mica aqueous dispersions pretreated at different temperatures prior to polymerization have shown a significant effect on the polymerization rate of anilinium‐DBSA. The higher the dispersion temperature, the higher is the polymerization rate found. Copyright © 2001 John Wiley & Sons, Ltd.