Korean Journal of Chemical Engineering, Vol.33, No.10, 3011-3015, October, 2016
Laccase-catalyzed polymerization of m-phenylenediamine in aqueous buffers
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In the laccase-catalyzed polymerization of m-phenylendiamine in 100% aqueous buffers, the yield of the polymer was strongly influenced by various reaction conditions such as the solution pH and the concentrations of laccase and m-phenylendiamine. When the reaction was performed at pH 3, the 100% synthetic yield of the polymer was achieved. As pH increased, the yield of the polymer decreased significantly to only 4.4% at pH 9. Effects of solution pH on the morphology and the thermal stability of the polymer were investigated in detail. The polymer synthesized at pH 3 has the typical aggregated morphology of globular particles, but being synthesized at pH 7, it has non-aggregated morphology. The thermal stability of the polymer deteriorated as reaction pH increased.
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