Journal of Polymers and the Environment

, Volume 22, Issue 3, pp 398–408 | Cite as

Study of Thermo-Mechanical and Morphological Behaviour of Biodegradable PLA/PBAT/Layered Silicate Blend Nanocomposites

  • Aswini Kumar Mohapatra
  • Smita Mohanty
  • S. K. Nayak
Original Paper


Poly (lactic acid) (PLA) and poly (butylene adipate-co-terephthalate) (PBAT) blend nanocomposites were prepared using melt blending technique followed by compression moulding. The blend nanocomposites were prepared with a variation of PBAT loading along with maleic anhydride and benzoyl peroxide ranging from 5 to 20 wt% along with two different commercially available nanoclays cloisite 93A and cloisite 30B (C30B) at 3 wt% loading. The maleic anhydride and benzoyl peroxide were used during the melt blending of the blend nanocomposites as a compatibilizer and as an accelerator respectively. Maleic anhydride used to enhance the compatibility of the PLA/PBAT blend and as well as the uniform adhesion of the nanoclays with them. The properties and characterizations of PLA matrix and the PLA/PBAT blend nanocomposites have been studied. The tensile strength, % elongation and impact strength increased with the preparation of PLA/PBAT blend nanocomposites as compared with PLA matrix. PLA/PBAT/C30B blend nanocomposites exhibited optimum tensile strength at 15 wt% of PBAT loading. Differential scanning calorimetry and thermogravimetric analysis also showed improved thermal properties as compared with virgin PLA. The wide angle X-ray diffraction studies indicated an increase in d-spacing in PLA/PBAT/C30B blend nanocomposite thus revealing intercalated morphology.


PLA PBAT Blend nanocomposites and WAXD 


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Aswini Kumar Mohapatra
    • 1
  • Smita Mohanty
    • 1
  • S. K. Nayak
    • 1
  1. 1.Laboratory for Advanced Research in Polymeric Materials (LARPM)Central Institute of Plastics Engineering and TechnologyBhubaneswarIndia

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