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Chinese Journal of Polymer Science

, Volume 37, Issue 1, pp 68–78 | Cite as

Preparation and Characteristics of Poly(butylene adipate-co-terephthalate)/Polylactide Blend Films via Synergistic Efficiency of Plasticization and Compatibilization

  • Worasak PhetwarotaiEmail author
  • Neeranuch Phusunti
  • Duangdao Aht-Ong
Article
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Abstract

Polylactide (PLA) films blended with poly(butylene adipate-co-terephthalate) (PBAT) were hot melted using a twin screw extruder with the addition of triethyl citrate (TEC) as a plasticizer and toluene diisocyanate (TDI) as a compatibilizer. The synergistic effects of the two additives on the mechanical, thermal, and morphological properties of the PLA/PBAT blend films were investigated. The influence of TEC content on the plasticized PLA films and the effect of TDI’s presence on the PLA/PBAT blend films were also studied by comparing them with neat PLA. The results showed a pronounced increase in elongation at break of the plasticized PLA films with increasing TEC levels, but a slight reduction in thermal stability. Also, the addition of TEC and TDI to the blend system not only synergistically enhanced the tensile properties and tensile-impact strength of the PLA/PBAT blends, but also affected their crystallinity and cold crystallization rate, a result of the improvement of interfacial interaction between PLA and PBAT, including the enhancement of their chain mobility. The synergy of the plasticization and compatibilization processes led to the improvement of tensile properties, tensile-impact strength, and compatibility of the blends, accelerating cold crystallization without affecting crystallization.

Keywords

Polylactide Plasticization Compatibilization Blend Crystallization 

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Notes

Acknowledgments

The work was financially supported by Development and Promotion of Science and Technology Talents (DPST) (No. 013/2559). Thanks also to Mr. Thomas Coyne for assistance with the English text.

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Copyright information

© Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Worasak Phetwarotai
    • 1
    • 2
  • Neeranuch Phusunti
    • 3
  • Duangdao Aht-Ong
    • 4
    • 5
  1. 1.Department of Materials Science and Technology, Faculty of SciencePrince of Songkla UniversityHatyai, SongkhlaThailand
  2. 2.Bioplastic Research Unit, Department of Materials Science and Technology, Faculty of SciencePrince of Songkla UniversityHatyai, SongkhlaThailand
  3. 3.Department of Chemistry, Faculty of SciencePrince of Songkla UniversityHatyai, SongkhlaThailand
  4. 4.Department of Materials Science, Faculty of ScienceChulalongkorn UniversityBangkokThailand
  5. 5.Center of Excellence on Petrochemical and Materials TechnologyBangkokThailand

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