EFFECT OF ON MELT GRAFTING OF GL YCIDYL METHACRYLATE ONTO NATURAL RUBBER IN THE PRESENCE OF ORGANIC PEROXIDES

Eddiyanto .

Abstract


The main aim of this work was to study of melt grafting glycidyl
methacrylate (GMA) on natural rubber (NR) using reactive processing methods.
Four different peroxides benzoyl peroxide (BPO), 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-29B90) 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.


Keywords


[unctionalisaiion, melt grafting, natural rubber, radical initiator, reactive processing.

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