Mechanical and thermal properties of triblock copolymer modified epoxy resins

  • Shankar P Khatiwada Research Center for Applied Science and Technology, Tribhuvan University, Kirtipur, Kathmandu
  • Sabu Thomas School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala
  • Jean Marc Saiter Université de Normandie Rouen Laboratoire SMS Faculté des Sciences and Onyx Developpment, Groupe-Nutriset, Rouen
  • Ralf Lach Polymer Service GmbH Merseburg (PSM), Merseburg,
  • Rameshwar Adhikari Central Department of Chemistry, Tribhuvan University, Kirtipur, Katmandu
Keywords: Block copolymers, Epoxy resins, Toughness, Mechanical properties

Abstract

We investigate the ways of improving thermal and mechanical properties of diglycidyl ether of bisphenol-A (DGEBA) based thermoset resin using diaminodiphenylsulphone (DDS) as hardener and using epoxidized polystyrene/polybutadiene-based triblock copolymers as modifier. The epoxidation was performed. The targeted chemical modification using meta-chloroperoxybenzoic acid (m-CPBA) of the copolymer was performed whereby the epoxidation of the butadiene chains mainly took place at 1,4 linkages. The modification copolymer was found to contribute in enhancing the mechanical performance of the blends with epoxy resin. The results indicated the formation of nanostructured morphology in the blends attributable to their enhanced impact strength.

BIBECHANA 16 (2019) 196-203

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Abstract
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PDF
478
Published
2018-11-22
How to Cite
Khatiwada, S., Thomas, S., Saiter, J., Lach, R., & Adhikari, R. (2018). Mechanical and thermal properties of triblock copolymer modified epoxy resins. BIBECHANA, 16, 196-203. https://doi.org/10.3126/bibechana.v16i0.21651
Section
Research Article