Indian Journal of Chemical Technology

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Ionic Liquid Mediated Synthesis of 4, 4'diamino Azo Benzene Substituted Aliphatic Polyamides and Thermal Studies


Affiliations
1 Department of Chemistry, Presidency College, Chennai 600 005, Tamil Nadu, India, India
2 2Department of Chemistry, Chellammal Women’s College, Chennai 600 032, Tamil Nadu,, India
3 3Department of Chemistry, Panimalar Engineering College, Chennai 600 123, Tamil Nadu,, India
 

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.

Keywords

Ionic liquid, Polyamides, Thermal studies, Green conditions, Viscosity
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  • Ionic Liquid Mediated Synthesis of 4, 4'diamino Azo Benzene Substituted Aliphatic Polyamides and Thermal Studies

Abstract Views: 121  |  PDF Views: 99

Authors

Sridevi B
Department of Chemistry, Presidency College, Chennai 600 005, Tamil Nadu, India, India
Chitra M
2Department of Chemistry, Chellammal Women’s College, Chennai 600 032, Tamil Nadu,, India
Nalini Suja R
3Department of Chemistry, Panimalar Engineering College, Chennai 600 123, Tamil Nadu,, India

Abstract


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.

Keywords


Ionic liquid, Polyamides, Thermal studies, Green conditions, Viscosity

References