Abstract
A protein-based natural polymer, soya powder, was melt blended with linear-low density polyethylene (LLDPE). Cobalt stearate (CS) was used as a pro-oxidant. The blends were exposed to natural weathering for 6 months. The susceptibility of the LLDPE/soya powder, based on its tensile properties, morphology, thermal behaviour and chemical and physical changes was measured every three months. The tensile strength and elongation at break (Eb) of the blends with CS were more susceptible compared to the blends without CS. During weathering, the crystallinity and weight loss increased with the addition of CS in the blends, however molecular weight was reduced.
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