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Title: Effects of protonic acids on polyaniline structure and characteristics
Authors: Neoh, K.G. 
Tan, K.L. 
Tan, T.C. 
Kang, E.T. 
Issue Date: Mar-1990
Citation: Neoh, K.G.,Tan, K.L.,Tan, T.C.,Kang, E.T. (1990-03). Effects of protonic acids on polyaniline structure and characteristics. Journal of macromolecular science. Chemistry A27 (3) : 347-360. ScholarBank@NUS Repository.
Abstract: Chemical polymerization of aniline in five different protonic acids, HCl, H2SO4, HBr, HNO3, and acetic acid (HAc), has been studied. The resulting polymers are characterized by elemental analysis, thermogravimetric analysis, infrared and x-ray photoelectron spectroscopy, and electrical conductivity measurements. It is found that a large fraction of the bromine and a smaller fraction of the chlorine in the product is covalently bonded. Thus a more accurate indicator of the degree of protonation would be the halogen anion rather than total halogen content. When H2SO4 is used for protonation, the anion incorporated in the polyaniline appears to be the HSO4 - rather than the SO4 2- species.
Source Title: Journal of macromolecular science. Chemistry
ISSN: 0022233X
Appears in Collections:Staff Publications

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