Thermal Characterization of an EPDM/IIR Rubber Blend using TG/DTG Anylsis

TG/DTG 방법에 의한 EPDM/IIR 고무 블렌드의 열분석

  • Ahn, Won-Sool (Department of Chemical Engineering, Keimyung University)
  • 안원술 (계명대학교 공과대학 화학공학과)
  • Published : 2007.03.31


Thermal Characterization of an EPDM/IIR rubber blend was performed using TG/DTG analysis. While TGA thermograms of a virgin EPDM and IIR showed their own characteristic thermal decomposition curves, that of an EPDM/IIR blend sample showed a characteristic curve, exhibiting both decomposition characteristics of EPDM and IIR. This finding was more clarified from DTG analysis obtained by differentiation of TGA thermograms, being exhibited as two distinct shifted-peaks. Degrees of peak-shift (${\Delta}T$) compared to their original positions were $+25\;^{\circ}C$ for IIR and $-15\;^{\circ}C$ for EPDM, respectively. From these facts, thermal stability of EPDM is considered comparatively better than IIR, and moreover, it can be an evidence for the characteristics of a partial compatibility between EPDM and IIR. It is noteworthy that, if we prepare in advance a calibration curve for the composition about EPDM/IIR blend, it may be possible to analyze quantitatively an EPDM/IIR blend, using comparatively simple TGA experiments as in the present work.


  1. 제갈영순, 'EPDM 고무 및 그 응용', 고분자과학과 기술, 10(3), 325 (1999)
  2. E. K. Easterbrook and R. D. Allen, 'EthylenePropylene Rubber', in 'Rubber Technology', ed. by M. Morton, Van Nostrand Reinhold Company Inc., N.Y., 1987
  3. 금호폴리켐 홈페이지, http//
  4. J. J. Maurer, 'Elastomers' in 'Thermal Characterization of Polymeric Materials', ed. by E. A. Turi, Academic Press, N.Y., 1983
  5. B. Wunderlich, 'Thermal Analysis of Polymeric Materials', Ch. 4, Springer-Verlag, Berlin, 2005
  6. S. C. Moldovearru, 'Analytical Pyrolysis of Synthetic Organic Polymers', Elservier, N.Y., 2005
  7. T. Hatakema, 'Handbook of Thermal Analysis', John Wiley & Sons, N.Y., 1998
  8. J. J. Maurer, 'Advances in Thermogravimetric Analyses of Elastomer Systems', J. Macomol. Sci., Chem., A8, 73 (1974)
  9. D. W. Brazier and G. H. Nickel, 'Thermoanalytical Methods in Vulcanizate Analysis II. Derivative Thennogravimetric Analysis', Rubber Chem. Technol., 48, 661 (1975b)
  10. D. W. Brazier and G. H. Nickel, 'Therrnoanalytical Methods in Vulcanizate Analysis I. Differential Scanning Calorimetry and the Heat of Vulcanization', Rubber Chem. Technol., 48, 26 (1975a)
  11. D. R. Paul and S. Newman, ed., 'Polymer Blends', Vol. 1., Ch. 2, Academic Press, N.Y., 1978