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Synthesis of a phenol copolymer with horseradish peroxidase and the study of its structure–property relations
Author(s) -
Lv Shenghua,
Li Di,
Ju Haobo,
Ma Yujuan,
Qiu Chaochao,
Zhang Guoyun
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38204
Subject(s) - copolymer , horseradish peroxidase , polymer chemistry , gel permeation chromatography , monomer , chemistry , aldehyde , fourier transform infrared spectroscopy , polymerization , phenol , hydrolysis , conjugated system , styrene , organic chemistry , polymer , catalysis , chemical engineering , enzyme , engineering
A phenol copolymer was synthesized by the free‐radical copolymerization of p ‐hydroxybenzaldehyde (HBA) and p ‐phenolsulfonate with horseradish peroxidase (HRP)/H 2 O 2 as an initiator. The synthesis process included aldehyde protection via acetalization, enzymatic polymerization, and aldehyde deprotection via hydrolysis of acetals. The effects of the monomer ratio and the HRP and H 2 O 2 composites on the properties of poly( p ‐hydroxybenzaldehyde‐ co ‐ p ‐phenolsulfonate) [poly(HBA‐ co ‐PS)] were investigated by the determination of the shrink temperature ( T s ) of tanned leather. The poly(HBA‐ co ‐PS) structure was characterized by Fourier transform infrared spectroscopy, NMR, UV spectroscopy, and gel permeation chromatography. The mechanism of enzymatic copolymerization, including initiation, H transfer, radical transfer, coupling, termination, differed from that of traditional free‐radical polymerization. A remarkable characteristic was that poly(HBA‐ co ‐PS) had a large conjugated structure in its molecules that markedly improved the activity of the aldehyde and hydroxyl groups and showed easy crosslinking in the leather fibers. The applied results showed that the T s of tanned leather with poly(HBA‐ co ‐PS) reached 83.6°C. Poly(HBA‐ co ‐PS) could be used as agent for tanning leather. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2013