The effect of palm oil fatty acid on curing behaviour and mechanical properties of epoxidized natural rubber (ENR 25 and ENR 50) and one grade of unmodified natural rubber (SMR L) was investigated in the concentration range of 0 to 7.0 phr. Results indicate that scorch and cure times increase with palm oil fatty acid concentration for all the rubbers investigated. At a similar palm oil fatty acid concentration, ENR 50 showed shortest scorch and cure times followed by ENR 25 and SMR L. Tensile modulus and hardness of all rubbers also increase with increasing acid concentration. At a similar acid concentration, ENR 50 showed the highest tensile modulus and hardness followed by ENR 25 and SMR L. However, the tensile and tear strengths pass through a maximum with increasing acid concentration but at a similar acid concentration, SMR L showed the highest tensile and tear strengths compared to ENR 25 and ENR 50.
No takes yet. Share an insight, caveat, or question.
Ismail et al. (1999) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: