NDLI: Synthesis and characterization of chlorinated polyaniline

Content Provider	IEEE Xplore Digital Library
Author	Xianhong Wang Lixiang Wang Xiabin Jing Fosong Wang
Copyright Year	1994
Description	Author affiliation: Changchun Institute of Applied Chemistry, Academia Sinica (Xianhong Wang)
Abstract	Summary form only given. Chlorinated polyaniline (Cl-PAn) with different Cl content has been synthesized in aqueous HCl/(NH/sub 4/)/sub 2/S/sub 2/O/sub 8/ system. The chlorination degree depends on aqueous HCl concentration in the reaction medium. The optimum condition to prepare Cl-PAn with high solubility and electrical conductivity is 6. 6 N HCl, equivalent monomer and oxidant concentration and at room temperature. This kind of Cl-PAn is 100% soluble in THF both in undoped and doped state, and its electrical conductivity is around 10/sup -4/S/cm. GPC result indicates that it has low number average molecular weight (Mn = 3523) and narrow molecular weight distribution (Mw/Mn = 2.14). Elemental analysis, FTIR, UV-Vis spectra and cyclic voltamograms of Cl-PAn are similar to those of poly (o-chloroanitine), indicating that Cl-PAn has similar structure as poly(o-chloroaniline). GC-MS and FTIR spectra demonstrate that chlorination happens at first on the monomer, then the chlorinated aniline homopolymerizes or copolymerizes with aniline. Once HCl concentration is over 7N, bi- or tri- chlorine substituted aniline can be formed, leading to great decrease in polymer yield and electrical conductivity.
Starting Page	274
Ending Page	274
File Size	83461
Page Count	1
File Format	PDF
DOI	10.1109/STSM.1994.835281
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-07-24
Publisher Place	Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Human computer interaction Chemical industry Chemistry Temperature Laboratories Thermal conductivity Nickel Polymers Conducting materials Physics
Content Type	Text
Resource Type	Article

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