Comparative Study of Butyl Rubber (IIR) and Bromobuty1 Rubber (BIIR) Based On FTIR, Dielectric and Thermal Studies

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The study aims for a comparative study of butyl rubber (IIR) and bromobutyl rubber (BIIR) based on spectroscopic, dielectric and thermal characterization. Using FTIR, complete vibrational analysis of butyl rubber and bromobutyl rubber are made available which confirms their chemical structure and the functional groups present in them. The effect of microwave frequency, namely 10 GHz and 26 GHz on dielectric constant values of IIR and BIIR was studied by using the method proposed by Robert and Von-Hippel. The thermal behavior of the rubber materials was studied from Thermogravimetric (TG) and Differential Thermal (DT) thermograms. The thermal stability of IIR and BIIR was compared from TG curves and the thermal transitions such as glass transition temperature (Tg), crystallization temperature (Tc) and crystalline melting temperature (Tm) were detected from DTA curves.
Keywords:IIR,BIIR, FTIR, dielectric constant ,Thermal stability


  1. J.R. White & D. Campbell, Polymer Characterization, Chapman& Hall, New York, 1989.
  2. W. Klöpffer, Introduction to Polymer Spectroscopy, Springer-Verlag, Frankfurt, 1984.
  3. George Socrates, Infrared Characteristic Group Frequencies, Tables & Charts, John Wiley & Sons, Chichester, 1994.
  4. R.M. Silverstein, G.C. Bassler, T.C Morrill, Spectroscopic identification of Organic compounds, 4th edn., John Willey and sons, New York, 1981.
  5. S. Gunasekaran, R.K Natarajan, A. Kala, R. Jagannathan, Indian J Pure Ap Phy, Volume 46, 733, 2008.
  6. Xiaogang Xiong, Jingyi Wang, Hongbing Jia, Eryuan Fang, Lifeng Ding, Polymer Degradation and Stability, Vol 981, 2208, 2013.
  7. G. Janowska, L. Slusarski, M. Koch, U. Wincel, Journal of Thermal Analysis and Calorimetry, Volume 50, 896, 1997.
  8. J.M.G. Cowie, V. Arrighi, Polymers: Chemistry and Physics of Modern Materials, 3rd edn., CRC Press, Boca Raton, 2007.