HRP催化淀粉与酚类接枝聚合物的合成

Synthesis of Graft Copolymer of Starch and Phenolic by Horseradish Peroxidase Catalysis

以辣根过氧化物酶(HRP)/H2O2为催化体系,催化降解淀粉和3,5-二羟基苯甲酸(3,5-DBA)进行自由基接枝共聚反应,合成了淀粉和酚类接枝共聚物。探讨了温度和pH对酶活力的影响以及接枝条件对接枝共聚反应的影响。通过FTIR、1HNMR和GPC对接枝改性淀粉的化学结构进行了表征。产物用作皮革鞣剂时,显示了良好的应用性能。

The free radical graft copolymerization of degraded starch and 3,5-dihydroxy benzoic acid was carried out with horseradish peroxidase/H2O2 as catalyst in order to prepare a graft copolymer of starch and phenolic.The effect of temperature and pH on the enzymatic activity was discussed.And the effect of graft conditions on the graft copolymerization was also investigated.The structure and properties of the copolymer were characterized by means of fourier transform infrared spectroscopy（FTIR）,nuclear magnetic resonance（1HNMR） and gel permeation chromatography（GPC）.The copolymer was used as tanning agent,and the application results show that it has excellent tanning properties.