Preparation and Characterization of Thermoplastic Polyester Elastomer/Nano-Metal Oxide Nanocomposites
DOI:
https://doi.org/10.22034/advjse22032118Keywords:
Thermoplastic polyester elastomer, Nano-ZnO, Nanocomposites, Mechanical properties, Thermal propertiesAbstract
Reinforced polymers with nanometal oxides open new avenues for engineered flexible composites that exhibit better mechanical and chemical properties. In this study, mechanical, thermal and electrical properties of the poly(butylene terephthalate)-block-poly(tetramethylene glycol) (PBT-PTMG)-based thermoplastic polyester elastomer (TPE) was filled with nano metal oxide particles (zinc oxide, ZnO) by direct melt blending method. The particle content in TPE was varied from 1 to 5 wt%. ZnO nanoparticles were coated with maleated styrene ethylene butylene styrene (SEBSMA) prior to melt mixing for better surface adhesion and fine distribution. We study the effects of polymer blends on the mechanical, thermal and electrical properties of TPE blends with and without nanoparticle addition. The tensile test was applied to obtain yield strength, tensile strength, tensile modulus, and elongation at break varied with the concentration of ZnO nanoparticles. Due to the stiff structure of the ZnO nanoparticles, all the tensile properties were increased except for the elongation at break. SEM tests display strong interfacial interactions between the TPE matrix and ZnO nanoparticles due to the formation of chemical bonds. The addition of ZnO nanoparticles enhances the overall thermal properties of soft and hard parts, melting temperature and thermal stability of nanocomposites. Increasing the amount of nanoparticles increases the mechanical properties, thermal stability and electrical properties of nanocomposite.
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