Natural rubber-polystyrene interpenetrating networks. Morphology and mechanical properties

Sequential interpenetrating polymer networks (IPNs) were synthesized using natural rubber (NR) and polystyrene (PS) as elastomer and plastomer components, respectively. Benzoyl peroxide was used as the polymerization initiator, dicumyl peroxide as the crosslinker for NR and divinyl benzene as the co...

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Bibliographic Details
Published in:European polymer journal 1993, Vol.29 (1), p.57-61
Main Authors: Das, Bibekananda, Sinha, Sudipta, Gangopadhyay, Tanmoy
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymers with particular structures
Preparation, kinetics, thermodynamics, mechanism and catalysts
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Summary:Sequential interpenetrating polymer networks (IPNs) were synthesized using natural rubber (NR) and polystyrene (PS) as elastomer and plastomer components, respectively. Benzoyl peroxide was used as the polymerization initiator, dicumyl peroxide as the crosslinker for NR and divinyl benzene as the comonomer/crosslinker for PS. Both full IPNs and semi-IPNs were prepared and characterized by evaluating their mechanical properties. Morphology of the IPNs were studied through scanning electron microscopy. Effect of variation of blend ratio and degree of crosslinking (of both plastomer and elastomer) on these properties were studied. Full IPNs showed higher tensile strength, modulus, tear strength and finer phase distribution than the corresponding semi-IPNs while the latter exhibited higher elongation at break and toughness.
ISSN:0014-3057
1873-1945
DOI:10.1016/0014-3057(93)90272-H