HRP/H2O2引发酚类共聚物的合成及结构与性能的相关性

Synthesis of A phenol copolymer using HRP/H2O2 initiation and correlation of its structure and properties

摘要:

对羟基苯甲酸（PHBA）和对羟基苯磺酸（PHSA）在辣根过氧化酶（HRP）/H2O2的催化下进行自由基共聚反应制备酚类共聚物(Poly(PHBA-co-PHSA))，研究了酚类单体配比和HRP用量对共聚物鞣制性能的影响，用FTIR、NMR、UV和GPC对酚类共聚物的分子结构进行了表征。HRP酶促自由基聚合反应的特征是依靠单体自由基的转移实现链的增长，相对分子质量容易控制，酚类聚合物结构中存在共轭体系。结果使得酚类聚合物及其功能基团具有较大的活性，对皮革胶原纤维具有较好的鞣制性能，可提高染色加油效果。鞣制后的皮革收缩温度（Ts）达到了78.6℃，复鞣皮革柔软丰满。与铬鞣剂配合使用可减少铬鞣剂的用量。

Abstract:

A phenol copolymer poly(PHBA-co-PHSA) was synthesized by radical copolymerization of p-hydroxybenzoic acid and p-Hydroxybenzene sulfonic acid using HRP/H2O2 initiation. The effects of monomers ratio and HRP dosage on tanning properties of phenol copolymer were investigated. The structure of phenol copolymer was characterized by FTIR, NMR and GPC. The remarkable features of enzymatic radical polymerization are propagation of polymer chain by radical transfer and its molecular weight easy to control and produce conjugated system in its molecule. The results have led to the high activity of functional groups of copolymer and exhibited excellent tanning effects and benefited for dyeing and fatiliquoring of leather. The tanning results indicated that the shrink temperature (Ts) of tanned leather can reach to 78.6℃. Meanwhile the retanned leather is excellent in softness and fullness. The phenol copolymer in conjunction with chrome tannage shows better tanning results and the chrome tannage can be decreased.