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Journal of Materials Science

, Volume 42, Issue 12, pp 4325–4333 | Cite as

Combustion and thermal properties of OctaTMA-POSS/PS composites

  • Lei Liu
  • Yuan HuEmail author
  • Lei Song
  • Shonali Nazare
  • Shuqin He
  • Richard Hull
Article

Abstract

Inorganic–organic composites of octa(tetramethylammonium) polyhedral oligomeric silsesquioxanes (OctaTMA-POSS) and polystyrene (PS) were prepared by melt-mixing method. The composites were characterized by Fourier-transform infrared spectrometry (FT-IR), Transmission electronic microscopy (TEM), scanning electronic microscopy (SEM), and thermal gravimetric analysis (TGA). Their flammability was evaluated by cone calorimeter test. The experimental results indicate that OctaTMA-POSS, when present in low ratios (1%–5%, weight ratio) in the composites, can decrease the peak heat release rate (HRR) by 15%, while high ratios of OctaTMA-POSS (20% and 30%) can decrease the peak HRR and the average HRR approximately linearly. Concentration and release rate of carbon monoxide (CO) in the composites combustion are also decreased evidently. Thermal gravimetric analysis under nitrogen and air atmosphere both show that the char yield increases obviously. These advances are attributed to the special properties of OctaTMA-POSS and its dispersion in PS.

Keywords

Heat Release Rate Thermal Gravimetric Analysis Mass Loss Rate Cone Calorimeter Char Residue 

Notes

Acknowledgements

We wish to thank the National Natural Science Foundation of China (No.50403014), Specialized Research Fund for the Doctoral Program of Higher Education (20040358056) and Bolton Fellowship supported by The University of Bolton, UK for financial support.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Lei Liu
    • 1
  • Yuan Hu
    • 1
    Email author
  • Lei Song
    • 1
  • Shonali Nazare
    • 2
  • Shuqin He
    • 1
  • Richard Hull
    • 2
  1. 1.State Key Laboratory of Fire ScienceUniversity of Science & Technology of ChinaHefeiChina
  2. 2.Centre for Materials Research and Innovation The University of BoltonDeane Road BoltonGreater ManchesterUK

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