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Toughening effect of liquid natural rubber on the morphology and thermo-mechanical properties of the poly(lactic acid) ternary blend

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Abstract

In this work, poly(lactic acid) (PLA) was melt blended with liquid natural rubber (LNR) and linear low-density polyethylene (LLDPE) to fabricate a PLA–LNR–LLDPE ternary blend. The torque rheology demonstrates the melt mixing behavior of PLA–LLDPE binary and PLA–LNR–LLDPE ternary blends. Mechanical properties of ternary blend illustrate the highest toughness as compared to neat PLA and PLA–LLDPE binary blend. Fracture morphology reveals the plastic deformation behavior in the ternary blend which is illustrated in TEM micrograph. The cold crystallization temperature of the ternary blend appears at a lower temperature as compared to the binary blend. The thermal stability of PLA is improved due to blending with LLDPE and LNR. The ternary blend exhibits greater storage modulus in the glassy state as well as in the rubbery state as compared to neat PLA and binary blend. Finally, LNR performed as an effective compatibilizer between PLA and LLDPE.

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Acknowledgements

Authors would like to acknowledge Universiti Malaysia Pahang, Malaysia for providing financial support to project RDU140331.

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Authors and Affiliations

  1. Faculty of Chemical and Natural Resources Engineering, Universiti Malaysia Pahang, Gambang, 26300, Kuantan, Malaysia

    Mohd Bijarimi & A. K. M. Moshiul Alam

  2. Faculty of Science and Technology, School of Applied Physics, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia

    Sahrim Ahmad

  3. Institute of Radiation and Polymer Technology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh

    A. K. M. Moshiul Alam

Authors
  1. Mohd Bijarimi
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  2. Sahrim Ahmad
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  3. A. K. M. Moshiul Alam
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Correspondence to Mohd Bijarimi or A. K. M. Moshiul Alam.

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Bijarimi, M., Ahmad, S. & Alam, A.K.M.M. Toughening effect of liquid natural rubber on the morphology and thermo-mechanical properties of the poly(lactic acid) ternary blend. Polym. Bull. 74, 3301–3317 (2017). https://doi.org/10.1007/s00289-016-1889-7

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  • DOI: https://doi.org/10.1007/s00289-016-1889-7

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