Ionic liquid mediated synthesis of 4, 4'diamino azo benzene substituted aliphatic polyamides and thermal studies

Indian Journal of Chemical Technology

article

Sridevi B¹  Chitra M²  Nalini Suja R³ 

[1] Department of Chemistry, Presidency College;Department of Chemistry, Chellammal Women’s College;Department of Chemistry, Panimalar Engineering College

关键词: Ionic liquid;    Polyamides;    Thermal studies;    Green conditions;    Viscosity;    Article;   

DOI  :  10.56042/ijct.v29i6.67387

学科分类：化学（综合）

来源: National Institute of Science Communication and Information Resources

【 摘 要 】

Ionic liquids act as green solvents, which can replace the usual traditional solvents which pose both environmental and biological hazard. In the present work 4,4'diamino azobenzene has been condensed with various aliphatic diacids such as succinic acid, glutaric acid, adipic acid, azelaic acid, sebacic acid and Pimelic acid using imidazolium based ionic liquids in the presence of triphenylphosphite(TPP). The resulting azopolyamides have been obtained in high yield with intrinsic viscosity ranging from 0.56 - 0.81 dlg-1. This method is compared with modified Higashi’s method. The thermodynamic parameters like G, H and S are calculated by approximate methods such as Freeman & Carroll, Coats & Red fern, Doyle and Murray and White. The resulting polyamides prepared using green condition show increased thermal stability when compared to polyamides prepared by modified Higashi’s method.

【 授权许可】

CC BY-NC-ND