The rheological, mechanical, morphological characteristics, and aging resistance in hot oil of thermoplastic elastomer based on multi-block thermoplastic copolyester elastomer (CPET)/nitrile rubber (NBR) have been in vestigated. The nitrile rubber is dynamically vulcanized during blending with thermoplastic copolyester elastomer. The etching technique was explored to conduct the SEM studies. The prepared thermoplastic elastomers possess ex cellent mechanical properties and good oil resistance.
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