A reactive polystyrene-block-polyisoprene star copolymer as a toughening agent in an epoxy thermoset
Abstract© 2015 Springer-Verlag Berlin Heidelberg A polystyrene-block-polyisoprene ((PS-b-PI)3) star polymer was synthesized by photochemical reversible addition fragmentation chain transfer (RAFT) polymerization. The obtained star polymer was epoxidized and used as a toughening agent in an epoxy thermoset. The incorporation of the epoxidized star polymer resulted in the formation of nanostructures and it was fixed by a crosslinking reaction. The formation of nanostructures in the thermosets follows the mechanism of reaction-induced microphase separation. The mechanical properties such as toughness and tensile strength were considerably increased due to the nanostructures formed by reactive blending.
CitationFrancis R, Baby DK (2015) A reactive polystyrene-block-polyisoprene star copolymer as a toughening agent in an epoxy thermoset. Colloid and Polymer Science. Available: http://dx.doi.org/10.1007/s00396-015-3810-6.
SponsorsRF gratefully thanks Prof. Yves Gnanou (Dean,PSE Division, KAUST, Saudi Arabia) and Prof. R.S. Duran (LSU,USA) for useful discussions in making the precursor star polymer. RFand DKB thank CSIR and DST, Govt of India for research fellowship. RFand DKB also thank UGC and State Govt for financial support.
PublisherSpringer Science + Business Media
JournalColloid and Polymer Science