Thermal properties of microcrystalline cellulose-filled PET-PTT blend polymer composites

Alper Kiziltas, Douglas J. Gardner, Yousoo Han, Han Seung Yang

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33 Scopus citations


Polymer composite materials were prepared from poly(ethylene terephthalate)-poly(trimethylene terephthalate) blends as the matrix and different microcrystalline cellulose (MCC) filler levels (0-40 wt%) using melt compounding followed by compression molding. The composites were analyzed using dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC) and thermogravimetric analysis (TG). The DSC results indicated that there is no consistent or significant influence of the MCC addition on the glass transition (T g), melting (T m), and crystallization temperature of the composites. With increasing MCC content, dynamic mechanical properties improved because of the reinforcing effect of the MCC. The tan δ peak values from the DMTA were not significantly changed as the MCC content increased. TG indicated that the onset temperature of rapid thermal degradation decreased with increasing MCC content. It was also found that the thermal stability of the composites slightly decreased as the MCC content increased.

Original languageEnglish (US)
Pages (from-to)163-170
Number of pages8
JournalJournal of Thermal Analysis and Calorimetry
Issue number1
StatePublished - Jan 2011

Bibliographical note

Funding Information:
Acknowledgements The Republic of Turkey, Ministry of National Education is greatly acknowledged for support of the scholarship of the researcher Alper Kiziltas to do this study at the University of Maine. The authors thank Chris West for the sample preparation. The authors would also like to thank Maine Agricultural and Forest Experiment Station (MAFES) project ME09615-08MS and the Wood Utilization Research Hatch 2007–2008 project. This is the 3069th paper of the Maine Agricultural and Forest Experiment Station.


  • Differential scanning calorimetry (DSC)
  • Dynamic mechanical thermal analysis (DMTA)
  • Microcrystalline cellulose (MCC)
  • PET/PTT blends

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