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Enzymatic polymerization of aniline and phenol derivatives catalyzed by horseradish peroxidase in dioxane
Author(s) -
Shan Jinyu,
Cao Shaokui
Publication year - 2000
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/1099-1581(200006)11:6<288::aid-pat975>3.0.co;2-d
Subject(s) - polymerization , hydroquinone , horseradish peroxidase , polymer , phenol , aniline , gel permeation chromatography , yield (engineering) , polymer chemistry , substrate (aquarium) , catalysis , hydrogen peroxide , nuclear chemistry , chemistry , materials science , organic chemistry , enzyme , oceanography , metallurgy , geology
Phenylenediamines, 4‐aminophenol and 1,4‐hydroquinone were polymerized via the catalysis of horseradish peroxidase in dioxane at ambient conditions by using hydrogen peroxide as the oxidant. Polymers formed in good yields are black powders soluble in dimethylformamide and dimethylsulfoxide. Several factors influencing the polymer yield were examined using 2‐phenylenediamine as substrate. It was found that pH value gave almost no influence in the range between 6.0 and 7.0, while the polymer yield increased as the concentration of the substrate in dioxane increased. The influence of the oxidant amount was still more obvious; larger excess of the oxidant being necessary in getting higher polymer yield. Using the optimized polymerization conditions, the yield of poly(2‐phenylenediamine) was achieved up to 77.8%. Weight average molecular weight of the polymers are higher than 1 × 10 4 as determined by gel permeation chromatography. The structure of the polymers was characterized by using nuclear magnetic resonance and infrared techniques. Copyright © 2000 John Wiley & Sons, Ltd.