EFFECT OF ON MELT GRAFTING OF GLYCIDYL 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 (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.


Keywords


functionalisation, melt grafting, natural rubber, radical initiator, reactive processing.

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References


Coran, A.Y. and Patel, R.P. Chapter 9:

Thermoplastic Elastomers 'Based on

Elastomer/Thermoplastic Blends

Dinamically Vulcanized, in Reactive

Mo.difiers for Polymers (Ed. S. Al­

Malaika), Blackie Academic & Professional,

London ( 1997), 349-394.

Galluci, R.R.and Going, R.C., 1982, Preparation and

reaction of epoxy-modified polyethylene, J.

Appl. Polym. Sci., 27, 425-437.

Ismail, H., Rusli, A., and Rashid, A.A., 2005,

Maleated natural rubber as a coupling agent

for paper sludge filled natural rubber

composites, Polym. Test., 24, 856-862.

Lake, G.J. in Handbook of Adhesion, D. E.

Packwhich, Ed., Longman, Harlow, UK,

Lehrle, R.S and Willist, S.L., 1997, Modification of

natural rubber: a study to assess the effect of

vinyl acetate on the efficiency of grafting

methyl methacrylate on rubber in latex form,

in the presence of azo-bis-lsobutyronitrile,

Polymer, 38, 5937-5946.

Merkel, M.P., Dimonie, V.L., El-Aasser, M.S.,

Vanderhoff, J.W., Daneils, E.S., 1987,

Morphology and grafting reaction in

core/sell latexes, J. Polym. Sci. Polym. A.

Polym Chem., 25, 1219-1233.

Suchiva, K., Kowitteerawut, T., and Srichantamit, L.,

, Structure Properties of Purified Natural Rubber, J. Appl. Polym. Sci., 78,

-1504

Suriyachi, P., Kiatkamjonwong, S., and

Prasassarakich, P., 2004, Natural rubber-g­

glycidyl methacrylate/styrene as a

compatibiliser in natural rubber/PMMA

blends, Rub. Chem. Techn., 77, 914-930.

Thiraphattaraphun, L., Kiatkamjornwong, S.,

Prasassarakich, P., and Damronglerd,

S.,:2001, Natural rubber-g-methyl

methacrylatelpoly(methyl methacrylate)

blends, J. Appl. Polym. Sci., 81. 428-439.

Xavier, T., Samuel, J, and Kurian, T., 2001, Synthesis

.. and Characterization of Novel Melt Processable Ionomers based on Radiation

Induced Styrene Grafted Natural Rubber,

Macromol. Mater. Eng .. 286. 507-512.

Yao, Z., Li, B-G., Cao, K., and Pan, Z.R., 1998,

Semicontinuous thermal bulk

copolymerization of styrene and maleic

anhydride: Experiments and reactor model,

J. Appl. Polym. Sci., 67, 1905. ·

Zhang, X., Yin, Z., Li, L., and Yin, J., 1996, Grafting

of glycidyf methacrylate onto ethylene­

propylene copolymer: preparation and

characterisation, ]. Appl. Polym Sci., 61,

-2257 .


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