摘要
对辣根过氧化物酶（HRP）催化水溶性导电聚苯胺的合成进行了研究.以聚乙烯磺酸钠（PVS）作为反应的聚阴离子模板.详细地研究了反应体系的pH值、H2O2浓度及苯胺与PVS的摩尔比对苯胺聚合的影响.用UV-vis-near-IR、FTIR及四探针电导率测试仪对产物进行了表征,并与其他模板聚合产物进行了比较.研究结果表明,PVS可作为HRP催化苯胺聚合的模板,合成的PVS/PANI的电导率为4.78×10^-1S·cm^-1,反应体系的pH值应控制在4.0～5.0,H2O2浓度以20 mmol·L^-1为宜,PVS与苯胺的摩尔比应控制在1～1.5.
Using the horseradish peroxidase（HRP） as the biocatalyst and H202 as the initiator in the presence of a poly（vinylsulfonic acid, sodium salt）（PVS） polyanion template, the enzymatic synthesis of a water-soluble, conducting polyanline（PANI） was studied. The effects of different buffer, concentration of H2O2, and the molar ratio of aniline to PVS on the polymerization were particularly investigated. The products were characterized by UV-vis-near-IR, FTIR spectroscopy, and four-point probe conductivity measurement. Meanwhile, the products were compared with those synthesized by using different templates. The results show that PVS could be chosen as a new template in the synthesis of PANI and the conductivity of the PVS/PANI synthesized is 4.78× 10^-1 S·cm^-1. The proper conditions of polymerization obtained are as follows： pH value of the buffer 4.0--5.0, the concentration of H2O2 around 20 mmol·L^-1, and the molar ratio of aniline to PVS 1-1.5.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2006年第3期407-411,共5页
Journal of Chemical Engineering of Chinese Universities
