Journal of Materials Science

, Volume 25, Issue 6, pp 2985–2989 | Cite as

Micromechanism of failure of thermoplastic rubber

  • Namita Roy Choudhury
  • Anil K. Bhowmick


The fracture surface morphology of various thermoplastic rubber and rubber vulcanizates based on natural rubber (NR), ethylene propylene diene rubber (EPDM), nitrile rubber (NBR), polyethylene (PE) and polypropylene (PP), namely NR-PE, NR-PP, EPDM-PE, EPDM-PP and NBR-PP, has been studied over a range of blend ratios, levels of interaction, rates, temperatures and modes of testing. The fracture surface changes with changes in blend ratio. Incorporation of a third component like EPDM or chlorinated polyethylene (CPE) to a certain percentage does not change the fracture morphology. Sulphur curing in the NR-PE blend generates a ductile matrix like rubber whereas large fissures are observed for peroxide-cured systems. Modification of both rubber and plastic also changes the surface morphology. The samples tested at various temperatures, rates and modes show similar features on the fracture surface.


Rubber Fracture Surface Nitrile Surface Morphology Diene 
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Copyright information

© Chapman and Hall Ltd 1990

Authors and Affiliations

  • Namita Roy Choudhury
    • 1
  • Anil K. Bhowmick
    • 1
  1. 1.Rubber Technology CentreIndian Institute of TechnologyKharagpurIndia

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