Laccase-catalyzed Polymerization of Aniline with Different Soft Templates

被引：2
|
作者：
Zhang, Ya [1 ]
Wang, Qiang [1 ]
Fan, Xuerong [1 ]
机构：
[1] Jiangnan Univ, Minist Educ, Key Lab Sci & Technol Ecotext, Wuxi 214122, Jiangsu, Peoples R China
来源：
POLYMER-KOREA | 2018年 / 42卷 / 02期
关键词：
A comparison of laccase-catalyzed polymerization of aniline in the presence of two different "soft" templates-micelle forming surfactant sodium dodecylbenzenesulfonate (SDBS) and sulfonated natural polyelectrolyte calcium lignosulfonate (LGS) - was investigated to check the influences of different templates on the kinetics of the polymerization and on the characteristics of the complexes obtained. Under respective optimal conditions pH 4.5 for SDBS and pH 3.5 for LGS the reaction with LGS was much slower than that in SDBS emulsion. The conditions for laccase-catalyzed synthesis of emeraldine salt of polyaniline (PANI-ES) in both cases were optimized using UV-vis spectroscopy. It was found that PANI-ES obtained with LGS template had a higher degree of oxidation with a higher amount of benzene rings than PANI-ES obtained in SDBS emulsion. Since the protonation of PANT occurred on its imine sites the doping effect of LGS-doped PANI-ES confirmed by XPS was thus better than that of SDBS-doped one; CONDUCTING MOLECULAR-COMPLEX; WATER-SOLUBLE POLYANILINE; PALM TREE PEROXIDASE; HORSERADISH-PEROXIDASE; ELECTROCONDUCTIVE POLYANILINE; SULFONATED POLYSTYRENE; ENZYMATIC-SYNTHESIS; LIGNOSULFONATE; FILMS; NANOFIBERS;
D O I：
10.7317/pk.2018.42.2.175
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A comparison of laccase-catalyzed polymerization of aniline in the presence of two different "soft" templates - micelle forming surfactant sodium dodecylbenzenesulfonate (SDBS) and sulfonated natural polyelectrolyte calcium lig-nosulfonate (LGS) - was investigated to check the influences of different templates on the kinetics of the polymerization and on the characteristics of the complexes obtained. Under respective optimal conditions, pH 4.5 for SDBS and pH 3.5 for LGS, the reaction with LGS was much slower than that in SDBS emulsion. The conditions for laccase-catalyzed synthesis of emeraldine salt of polyaniline (PANI-ES) in both cases were optimized using UV-vis spectroscopy. It was found that PANI-ES obtained with LGS template had a higher degree of oxidation with a higher amount of benzene rings than PANI-ES obtained in SDBS emulsion. Since the protonation of PANI occurred on its imine sites, the doping effect of LGS-doped PANI-ES, confirmed by XPS, was thus better than that of SDBS-doped one. © 2018 The Polymer Society of Korea. All rights reserved.
引用
收藏
页码：175 / 184
页数：10
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