Publication: Morphology of peroxide-prevulcanised natural rubber latex: Effect of reaction time and deproteinisation
Issued Date
2003-12-01
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ISSN
0303402X
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2-s2.0-2542510757
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Mahidol University
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SCOPUS
Bibliographic Citation
Colloid and Polymer Science. Vol.282, No.2 (2003), 177-181
Suggested Citation
P. Tangboriboonrat, D. Polpanich, T. Suteewong, K. Sanguansap, U. Paiphansiri, C. Lerthititrakul Morphology of peroxide-prevulcanised natural rubber latex: Effect of reaction time and deproteinisation. Colloid and Polymer Science. Vol.282, No.2 (2003), 177-181. doi:10.1007/s00396-003-0947-5 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/20794
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Title
Morphology of peroxide-prevulcanised natural rubber latex: Effect of reaction time and deproteinisation
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Abstract
A non-uniform mesh structure, i.e. a dense network near the surface of peroxide-prevulcanised natural rubber latex particles, was observed under transmission electron microscopy. In the initial period of prevulcanisation, the swelling ratio of the latex sheet decreased with longer reaction time while an increase in crosslink density of rubber particles containing polystyrene, prepared using the phase transfer/bulk polymerisation process, was noticed. The modulus of the rubber sheet increased up to maximum crosslinking and thereafter decreased. After removal of proteins from the latex membrane layer, derived from protein-lipid originally existing at the rubber particle surface, could not be detected. The absence of proteins, which act as free radical scavengers, resulted in a rapid diffusion of alkoxy radicals into the rubber phase of deproteinised latex and, therefore, a uniform crosslink distribution inside each particle was obtained. © Springer-Verlag 2003.