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Facile synthesis of electroactive polypyrrole–chitosan composite nanospheres with controllable diameters
Author(s) -
Li Yingmei,
Li Guicun,
Peng Hongrui,
Chen Kezheng
Publication year - 2011
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2995
Subject(s) - polypyrrole , chitosan , pyrrole , biocompatibility , materials science , composite number , polymerization , aqueous solution , chemical engineering , polymer chemistry , nanotechnology , electrochemistry , chemistry , polymer , organic chemistry , composite material , electrode , engineering , metallurgy
Polypyrrole–chitosan composite (PCC) nanospheres with uniform diameters have been synthesized by in situ chemical oxidation polymerization of pyrrole in chitosan aqueous solution. The influences of synthetic parameters, such as the concentrations of chitosan and pyrrole, and types of oxidants on the diameters and molecular structures of the PCC nanospheres have been investigated. It is found that the diameters of the PCC nanospheres can be controlled by adjusting the concentrations of chitosan and pyrrole. Chitosan is absorbed on/in polypyrrole nanospheres to form the PCC nanospheres. The resulting PCC nanospheres preserve both the electroactivity of polypyrrole and the biocompatibility and bioactivity of chitosan, and may have potential biomedical applications such as in biosensors and in the controlled release of drugs. Copyright © 2010 Society of Chemical Industry