Structural modification of epoxy resins by a liquid elastomer

Padma, A and Rao, RMVGK and Subramaniam, C (1994) Structural modification of epoxy resins by a liquid elastomer. High Performance Polymers, 6 (1). pp. 71-81.

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Abstract

A carboxy terminated poly-n-(butyl acrylate, acrylic acid, acrylonitryl) (PNBA) terpolymer was used as a modifier for three high-functionality epoxy resins, (i) epoxy novolac, (ii) triglycidyl-4-aminophenol (TGPAP) and (iii) tetraglycidyl diaminodiphenyl methane (TGDDM), used as matrix materials in polymer composites. The resin and elastomer were reacted using different amine catalysts at different temperatures. The progress of the reaction between the epoxy resin and elastomer was studied extensively by Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). The results show that hydroxy esterification and etherification occurred during the epoxy-carboxy group reaction. The possible reaction mechanism involved is discussed on the basis of the results obtained.

Item Type: Journal Article
Uncontrolled Keywords: Amines; Calorimetry; Catalysts; Chemical modification; Elastomers; Esterification; Fourier transforms; Infrared spectroscopy; Nonmetallic matrix composites; Polyacrylonitriles; Thermosets; Toughening; Differential scanning calorimetry (DSC); Epoxy novolac; Fourier transform infrared (FTIR) spectroscopy; Hydroxy esterification; Liquid elastomer; Tetraglycidyl diaminodiphenyl methane (TGDDM); Triglycidyl 4 aminophenol (TGPAP); Epoxy resins;
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Other, Fibre Reinforced Plastics Division, Other
Depositing User: Mr Vijaianand SK
Date Deposited: 10 Mar 2005
Last Modified: 24 May 2010 09:38
URI: http://nal-ir.nal.res.in/id/eprint/340

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