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.

Full Text:

PDF

References


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

Thermoplastic Elastomers Based on

Elastomer/Thermoplastic Blends Dinamically

Vulcanized, in Reactive Modifiers for

Polymers (Ed. S. Al-Malaika), Blackie

Academic & Professional, London (1997),

-394.

Galluci, RR.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-isobutyronitrile, Polymer,

, 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., 2000, Structure Properties of

Purified Natural Rubber, J. Appl. Polym. Sci.,

, 1495-1504

Suriyachi, P., Kiatkamjonwong, S., and

Prasassarakich, P., 2004, Natural rubber-g-

glycidyl methacrflatelerfrene as a

compatibiliser in natural rubber/PMMA blends,

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

Thiraphattaraphun, L., Kiatkamjomwong, S.,

Prasassarakich, P., and Damronglerd,

S.,2001, Natural rubber-g-methyl

methacrylate!poly(methyl methacrylate) blends,

I. 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 Shjrene 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,

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

Grafting of glycidyl methacrylate onto ethylene-

propylene copolymer: preparation and

characterisation, I. Appl. Polym Sci., 61, 2253-


Article Metrics

Abstract view : 80 times
PDF - 162 times

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.