Abstract
A renewable polymer, collected as a gum from a local plant (Moringa Oleifera) was characterized by various techniques viz. solubility, viscosity, IR, elemental analysis etc. it was compounded with various elastomeric systems viz. natural rubber (NR), nitrile rubber (NBR) and chloroprene rubber (CR) in order to judge its compatibility in the base polymers. 200% and 300% moduli, tensile strength, elongation at break (%) and hardness of the vulcanizates were measured. Surface morphology of the tear tensile specimen was studied by scanning electron microscopy (SEM). Retention of the above mechanical properties after leaching with boiling acetone for 48 h, with water at 30°C for 48 h and isothermal aging at 100±2°C for 72 h of the samples was also measured. The results were compared with those of a non-polymeric fire retardant additive, Sb2O3, in an identical condition, as the plant polymer has shown potential fire retardant properties. Results indicated that the plant polymer-rubber blends showed, in general, improved retention of tensile properties before and after aging and leaching.
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