Journal of Thermal Analysis and Calorimetry

, Volume 126, Issue 3, pp 1331–1337 | Cite as

Transparent poly(lactic acid)/halloysite nanotube nanocomposites with improved oxygen barrier and antioxidant properties

  • W. L. Tham
  • B. T. Poh
  • Z. A. Mohd Ishak
  • W. S. Chow


Poly(lactic acid) (PLA)/halloysite nanotube (HNT) nanocomposite thin films were prepared via melt compounding followed by compression molding. Epoxidized natural rubber (ENR) was used to toughen the PLA/HNT nanocomposites. The effects of the HNTs and ENR on the oxygen permeability of the PLA films were evaluated. The oxidation onset temperatures (OOTs) of the PLA nanocomposites were measured using differential scanning calorimetry (DSC), and the thermal decomposition was assessed by thermogravimetric analysis (TG). PLA/HNT6/ENR5 exhibits the lowest oxygen permeability coefficient of the films studied, which indicates that the barrier properties of PLA/HNT6 were enhanced by the incorporation of 5 mass% ENR. From the DSC results, the addition of 6 mass% HNT shifted the OOT of the PLA to higher temperatures, improving the antioxidant properties of the PLA nanocomposites. The thermal decomposition behavior of the PLA/HNT nanocomposites depends on the HNT loading, ENR loading, and testing environment (i.e., nitrogen and oxygen). The TEM images suggest that ENR promoted good interaction between the PLA and HNT, which confirms that good adhesion between HNT and ENR generates longer tortuous pathways for oxygen permeation and results in a PLA/HNT nanocomposite with enhanced barrier properties.


Poly(lactic acid) Halloysite nanotube Oxygen permeability Optical properties Oxidation onset temperatures 



This study was funded by Universiti Sains Malaysia Research University Grant (Grant Nos. 814070, 814199), USM Incentive Grant (Grant No. 8021013), and Ministry of Higher Education Malaysia MyPHD Scholarship Programme.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2016

Authors and Affiliations

  • W. L. Tham
    • 1
  • B. T. Poh
    • 2
  • Z. A. Mohd Ishak
    • 1
  • W. S. Chow
    • 1
  1. 1.School of Materials and Mineral Resources EngineeringUniversiti Sains MalaysiaPenangMalaysia
  2. 2.School of Industrial TechnologyUniversiti Sains MalaysiaPenangMalaysia

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