Restricted accessResearch articleFirst published online 2013-11
Unique Multifunctional Behaviour of Ash from the Latex of Euphorbia caducifolia Haines in Chlorobutyl Rubber (CIIR) Compound for a Truck Inner-Tube Application - Part II
The latex of Euphorbia caducifolia Haines is a green renewable source of material which acts as the origin of Ash. Ash generated from toluene insoluble fraction of the coagulum at 750°C found to contain nearly 73% magnesium oxide (MgO). It was observed that the ash can act as a cure retarder in a model chlorobutyl rubber (CIIR) based truck inner tube compound and its action was comparable with the commercial MgO, though not exactly equivalent. Optimum cure-retardation with ash was observed at 0.3 phr loading. Surprisingly, the ash also produced some cure activation effect due to presence of zinc oxide. Rate of cure in gum/ filled compositions at 0.3 phr loading of ash was found 125/48 min-1 against 106.4/29.6 min-1 of commercial MgO.
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