Abstract
The thermal degradation behaviour of thermoplastic elastomeric blends of nylon-6 and an acrylate rubber (ACM) has been studied by non-isothermal thermogravimetry. The thermal stability of the blends is low compared to that of nylon-6, which is explained on the basis of ‘ester-amide interchange’ reaction at high temperature during degradation. The exchange reaction effectively degrades the nylon-6 phase in the blends. The melt reaction between nylon-6 and ACM which occurs during the blending operation, slightly improves the stability of the blends. Ageing of dynamically cured 40/60 (w/w) nylon-6/ACM blend, which is thermoplastic elastomeric (TPE) in nature, has been carried out in air at various temperatures and times. The results show excellent heat resistance of the TPE at elevated service temperature.
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