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Control of Polyaniline Molecular Weight Based on p-aminodiphenylamine  

Hong Jang-Hoo (Department of Fine Chemistry, Seoul National University of Technology)
Jeon, Je Yeoul (Department of Fine Chemistry, Seoul National University of Technology)
Publication Information
Applied Chemistry for Engineering / v.20, no.1, 2009 , pp. 75-79 More about this Journal
Abstract
The ratio of aniline dimer (p-aminodiphenylamine), which is a nucleation site of chain growth in a chemical polymerization of aniline monomer, to aniline monomer was controlled to synthesize polyaniline with the molecular weight ($M_w$) between 10000 and 20000 g/mol. The result of OCP measurement showed that the reaction rate of polymerization was increased as the mole ratio of dimer was increased. The increase in the molar ratio of dimer resulted in the shift of absorption wavelength of polyaniline to the short wavelength region on measurement of UV/Vis and the decrease of molecular weight on the measurement of GPC.
Keywords
polyaniline; p-aminodiphenylamine; molecular weight; nucleation site; dimer;
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