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Influence of compatibilizer on mechanical, morphological and rheological properties of PP/ABS blends

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Abstract

The objective of this work was to study the compatibilizer effect on polypropylene (PP) and acrylonitrile butadiene styrene (ABS) blends. The blends were coextruded and injection molded in various ratios of ABS with and without compatibilizers. Universal testing machine was employed to analyze the tensile properties of basic PP/ABS binary blends. From the mechanical testing, the impact and tensile properties of PP/ABS blend were optimized at 80/20 weight ratio. Various compatibilizers such as PP-g-MAH, SEBS-g-MAH and ethylene α-olefin copolymer were used and their comparative performance on binary blend was enumerated. Hybrid compatibilization effect was also studied and reported. However, the addition of compatibilizers showed the maximum increase in impact strength attributed to rubber toughening effect of ABS. The effect of compatibilizers on morphological properties was examined using scanning electron microscopy (SEM). SEM micrographs depicted the more efficient dispersion of ABS particles in PP matrix with the addition of compatibilizers. Further, interparticle distance analysis was carried out to evaluate the rubber toughening effect. The ABS droplet size in compatibilized PP/ABS blend was brought to minimum of 3.2 μm from 9.9 μm with the addition of compatibilizers. The melt rheology of PP/ABS blend systems was investigated through parallel plate arrangement in frequency sweep. Linear viscoelastic properties like storage (G′) and loss (G″) modulus and complex viscosity (η*) have been reported with reference to the virgin materials. It is understood that the combination of compatibilizers (hybrid compatibilizer) had a considerable effect on the overall blend properties.

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Authors and Affiliations

  1. Central Institute of Plastics Engineering and Technology (CIPET), Chennai, 600032, India

    Sateesh Bonda, Smita Mohanty & Sanjay K. Nayak

  2. Laboratory for Advanced Research in Polymeric Materials (LARPM), Bhubaneswar, 751024, India

    Smita Mohanty & Sanjay K. Nayak

Authors
  1. Sateesh Bonda
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  2. Smita Mohanty
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  3. Sanjay K. Nayak
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Correspondence to Sanjay K. Nayak.

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Bonda, S., Mohanty, S. & Nayak, S.K. Influence of compatibilizer on mechanical, morphological and rheological properties of PP/ABS blends. Iran Polym J 23, 415–425 (2014). https://doi.org/10.1007/s13726-014-0236-9

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  • DOI: https://doi.org/10.1007/s13726-014-0236-9

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