【摘要】 在辣根过氧化物酶(HRP)/H2O2的催化作用下间苯二酚(RE)和3,5-二羟基苯甲酸(DBA)通过自由基共聚反应生成酚类共聚物,研究了RE和DBA的配比对共聚物鞣剂性能的影响,用FT-IR、1 HNMR、13C NMR、GPC和UV等方法对酚类共聚物的分子结构进行了表征。水溶液中HRP/H2O2催化自由基聚合反应的显著特征是共聚物的相对分子质量容易控制,酚类聚合物苯环直接相连,结构内存在较大的共轭体系。应用结果表明酚类聚合物具有较好的鞣制效果,鞣制后的皮革收缩温度(Ts)达到了78.6℃,复鞣皮革非常柔软丰满。更多还原

【Abstract】 A phenol copolymer was synthesized by free-radical copolymerization of resorcinol(RE) and 3,5-dihydroxybenzoic acid(DBA) using horseradish peroxidase(HRP)/H2O2 initiation.The effects of the monomer composition and molecular weight(Mw) of the copolymer on the tanning properties were investigated.The structure of the copolymer were characterized by Fourier transform infrared spectroscopy(FT-IR),nuclear magnetic resonance(NMR) and gel permeation chromatography(GPC) and ultraviolet visible spectrophotometer(UV-Vis).The remarkable characteristics of HRP enzymatic catalysis free-radical copolymerization are that the molecular weight is easily to control and the benzene rings of phenol copolymer linked together produce a larger conjugated system.The applied results show that the phenol copolymer has excellent tanning properties and the shrink temperature(Ts) of tanned leather may reach to 78.6℃,and retanned leather has the merits of good selective filling,fullness and softness.更多还原