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2020•Elastomers and CompositesOpen access

Mechanical Properties and Morphology of Polyamide/Polypropylene Blends

Su Young Kim, Jin Uk Ha, Donghyeok Shin, Wooseok Jung, Pyoung‐Chan Lee

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Abstract

This study examined the effects of the addition of maleic anhydride-grafted polypropylene (PP-g-MA) and poly­olefin elastomer (POE) on polyamide 66 (PA66) and polypropylene (PP) blends. The blends of PA66/PP with PP-g-MA and POE were prepared using a twin screw extruder. Mechanical testing results revealed that the tensile, flexural, and izod impact strengths of the blends were maximized at a PP-g-MA content of 2 phr. The increased mechanical strength of the blends with PP-g-MA was attributed to the compatibilizing effect of the PA66 and PP blends. In addition, as the POE content increased, the impact strength of the blends increased. However, at a high POE con­tent, the tensile and flexural strengths decreased, seemingly because of the lower mechanical properties of POE.

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What this paper is about

This study examined the effects of the addition of maleic anhydride-grafted polypropylene (PP-g-MA) and poly­olefin elastomer (POE) on polyamide 66 (PA66) and polypropylene (PP) blends. The blends of PA66/PP with PP-g-MA and POE were prepared using a twin screw extruder. Mechanical testing results revealed that the tensile, flexural, and izod impact strengths of the blends were maximized at a PP-g-MA content of 2 phr. The increased mechanical strength of the blends with PP-g-MA was attributed to the compatibilizing effect of the PA66 and PP blends. In addition, as the POE content increased, the impact strength of the blends increased. However, at a high POE con­tent, the tensile and flexural strengths decreased, seemingly because of the lower mechanical properties of POE.

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Available abstract

This study examined the effects of the addition of maleic anhydride-grafted polypropylene (PP-g-MA) and poly­olefin elastomer (POE) on polyamide 66 (PA66) and polypropylene (PP) blends. The blends of PA66/PP with PP-g-MA and POE were prepared using a twin screw extruder. Mechanical testing results revealed that the tensile, flexural, and izod impact strengths of the blends were maximized at a PP-g-MA content of 2 phr. The increased mechanical strength of the blends with PP-g-MA was attributed to the compatibilizing effect of the PA66 and PP blends. In addition, as the POE content increased, the impact strength of the blends increased. However, at a high POE con­tent, the tensile and flexural strengths decreased, seemingly because of the lower mechanical properties of POE.

Key concepts: Izod impact strength test, Polypropylene, Materials science, Polyamide, Ultimate tensile strength, Maleic anhydride, Composite material, Flexural strength

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