HRP催化下对羟基苯甲醛与对羟基苯磺酸钠共聚物的制备及性能研究

Study on Preparation and Properties of Copolymer of p-Hydroxybenzaldehyde and 4-Phenolsuflonate with HRP catalysis

摘要:

利用辣根过氧化物酶（HRP）/H2O2催化体系合成对羟基苯甲醛（PHB）和对羟基苯磺酸钠（PHS）的共聚物。首先，PHB和乙二醇反应生成对羟基苯甲醛乙二醇缩醛（PHBEA）以保护醛基，然后进行PHBEA和PHS酶催化聚合，最后在酸性条件下解除缩醛得到PHB-PHS共聚产物。研究了单体配比、体系pH、反应温度、HRP用量和H2O2滴加时间对PHBEA和PHS共聚反应的影响。用FTIR、NMR、GPC表征了产物结构。应用结果表明，应用革收缩温度（Ts）从54 ℃提高至74.5℃。该产物具有助染、鞣制等性能。

Abstract:

The copolymer of p-hydroxybenzaldehyde (PHB) and 4-phenolsuflonate (PHS) was synthesized using horseradish peroxidase (HRP)/H2O2 as catalyst. Firstly, PHB can react with ethylene glycol to generate p-hydroxybenzaldehyde ethylene acetal (PHBEA) so as to protect aldehyde group. Then copolymer of PHBEA and PHS was prepared by enzymatic catalytic polymerization. Finally, the copolymer of PHB-PHS was obtained by getting rid of the aldolization. Effects of monomers composition, system pH, polymerization temperature, amount of HRP and H2O2 dropwise time on copolymerization were investigated. The structure and properties of the copolymer were characterized by FTIR, NMR and GPC. The applied results show that the shrinkage temperature (Ts) of tanned leather may increase from 54°C to 74.5°C, and the copolymer has assisting dyeing and tanning effect on skin fibers.