SYNTHESIS AND CHARACTERIZATION OF POLYMERS PRODUCED BY HORSERADISH-PEROXIDASE IN DIOXANE
SYNTHESIS AND CHARACTERIZATION OF POLYMERS PRODUCED BY HORSERADISH-PEROXIDASE IN DIOXANE
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DOI：
10.1002/pola.1991.080291105
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发表时间：
1991-10-01
影响因子：
--
通讯作者：
KAPLAN, DL
中科院分区：
文献类型：
--
作者：
AKKARA, JA;SENECAL, KJ;KAPLAN, DL
Polymers were synthesized from substituted phenolic and aromatic amine compounds with hydrogen peroxide as the source of an oxidizing agent and horseradish peroxidase enzyme as the catalyst. The polymerization reaction was carried out in a monophasic organic solvent with small amounts of water at room temperature. Conditions for the synthesis of polymers with respect to reaction time and yield were studied with a number of monomers at different concentrations and in solvents with different buffers with pH range of 5.0-7.5. Physical and chemical properties of these homo- and copolymers were determined with respect to melting point, solubility, elemental analysis, molecular weight distribution, infrared absorption (including FTIR), solid-state C-13 nuclear magnetic resonance, thermal gravimetric analysis, and differential scanning calorimetry. The enzyme catalyzed reactions produced polymers of molecular weight greater than 400,000 which were further fractionated by differential solubility in solvent mixtures and the molecular weight distribution of the polymer fractions were determined. In general, the polymers synthesized have low solubilities, high melting points, and some degree of branching.
