EFFECT OF ON MELT GRAFTING OF GLYCIDYL METHACRYLATE ONTO NATURAL RUBBER IN THE PRESENCE OF ORGANIC PEROXIDES
Abstract
The main aim of this work was to study of melt grafting glycidyl methacrylate (OMA) on natural
rubber (NR) using reactive processing methods. Four different peroxides benzoyl peroxide (8PO),
dicumyl peroxide (DCP), 2,5-dimethyl-2,5-bis-(tert-butyl peroxy) hexane (T-101 ), and 1, 1-di(tert
butylperoxy)-3,3,5-trimethyl cyclohexane (T-29890) were examined as free radical initiators. An
appropriate methodology was established and chemical composition and reactive processing
parameters were examined and optimised. Procedures for purification of the reaction products were
developed so that the extent of monomer grafting on the rubber can be characterised accurately, using
mainly FTIR technique. The reaction mechanism of the functionalisation was also examined. It was
found that the grafting degree of GMA increased with increasing of GMA's concentration. It was also
found that T-101 was a suitable peroxide to initiate the grafting reaction of these monomers on NR.
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