摘要
对羟基苯甲酸(PHBA)与对氨基苯磺酸(SAA)在辣根过氧化物酶(HRP)/H2O2催化下进行自由基共聚反应,合成了PHBA-SAA共聚物。研究了反应温度、体系pH、单体用量、HRP用量、H2O2滴加时间和反应时间对聚合反应的影响。在去离子水150mL与KH2PO4-K2HPO4缓冲溶液50mL组成的溶液中,当PHBA与SAA物质的量之比为2∶1且二者的用量为0.15mol、HRP用量为5mg、17g30%H2O2滴加时间为2h、体系的pH值稳定在8.0时,在30℃下反应3.5h得到了PHBA与SAA的共聚产物,其物质的量产率约为98%。通过FTIR、NMR和GPC表征了产物结构。提出了PHBA与SAA自由基聚合反应机理。应用结果表明,该产物具有助染、复鞣等性能。
A phenolic monomers copolymer was synthesized by means of radical copolymerization of p-hydroxybenzoic acid （PHBA） and sulfanilic acid （SAA）,and the reaction was catalyzed by horseradish peroxidase （HRP）/H2O2. The effects of polymerization temperature,system pH,amount of monomers and HRP,H2O2 dropwise time and reaction time on structure and properties were investigated. The ideal copolymer was synthesized in 150mL solution composed of deionized water and phosphate buffer when the molar ratio of PHBA and SAA was 2：1 and the amount of PHBA and SAA was 0.15mol,and catalyst was HRP/H2O2 at 30℃ for 3.5 h,the amount of HRP was 5mg,the dropwise time of 17g 30% H2O2 was 2h and the pH value was 8.0. The molar yield of copolymer was about 98%. The structure and properties of the copolymer were characterized by FTIR,NMR and GPC,and the mechanism of polymerization between PHBA and SAA was advanced. The applied results show that it has assisting dyeing and retanning properties,application product has desired dyeing effect and excellent softness.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2010年第8期1427-1431,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(20876091)
陕西省自然科学基金资助项目(SJ08B06)
关键词
辣根过氧化物酶
对羟基苯甲酸
对氨基苯磺酸
酶催化聚合
horseradish peroxidase
p-hydroxybenzoic acid
sulfanilic acid
enzymatic catalytic polymerization
