Application of the Advanced Thermal Analysis System (ATHAS) to Differential Scanning Calorimetry (DSC) and Temperature-Modulated DSC of Polymers

Abstract

The Advanced THermal Analysis System (ATHAS) involves the establishment of the link between heat capacity at low temperatures and molecular, vibrational motion. This description is then used to extrapolate the vibrational heat capacities to high temperatures. Next, the measured data can be analyzed in terms of conformational mobility, of importance to assess sample properties. Broad melting and glass transitions can thus be analyzed. Modem differential scanning calorimetry, DSC, and temperature-modulated DSC, TMDSC, are used to separate reversible and irreversible processes. An effort will be made to suggest when it is possible to apply quick DSC, and when it is necessary to use the slower, but more precise and informative TMDSC.

Keywords

calorimetry temperature-modulated calorimetry heat capacity transition

Get full access to this article

View all access options for this article.

References

1. B. Wunderlich , "Thermal Analysis," Academic Press, New York, NY, 1990. See also Reference [8].

2. W. Nernst , Ann. Phys., 36, 395-395 (1911).

3. M. Reading , D. Elliot , and V. L. Hill , J. ThermalAnal., 40,949-949 (1993); P. S. Gill, S. R. Sauerbrunn and M. Reading, ibid. 931; M. Reading, Trends in Polymer Sci., 8, 248 (1993).

4. R. Pan , M. Varma , and B. Wunderlich , J Thermal Anal., 35, 955-955 (1989).

5. V. V. Tarasov , ZA. Fiz. Khim., 24, 111-111 (1950).

6. P. Debye , Ann. Phys., 39, 789-789 (1912).

7. A. Einstein , Ann. Phys., 22, 18-18, 800-800 (1907).

9. B. Wunderlich , "Thermal Analysis of Materials," a computer assisted lecture course, downloadable from Reference [8].

10.

10. A. Boller , Y. Jin , and B. Wunderlich , J. Thermal Analysis, 42, 307-307 (1994).

11.

11. B. Wunderlich , Y. Jin , and A. Boller , Thermochim. Acta, 238, 277-277 (1994).

12.

12. B. V. Lebedev , T. G. Kulagina , and N. N. Smirnova ,J. Chem. Thermodynamics, 20,1383-1383 (1988).

13.

13. M. Varma-Nair and B. Wunderlich , J. Thermal Analysis, 46, 879-879 (1996).

14.

14. A. Boller , I. Okazaki , K. Ishikiriyama , G. Zhang , and B. Wunderlich , J. ThermalAnalysis, 49,1081-1081 (1997);[K. Ishikiriyama and B. Wunderlich,]. Thermal Analysis, 50, 337 (1997).

15.

15. K. Ishikiriyama , M. Pyda , G. Zhang , T. Forschner , J. Grebowicz , and B. Wunderlich , J. Macromol. Sci.-Phys., B37, 27-27 (1997).

16.

16. I. Okazaki and B. Wunderlich , Macromolecules, 30, 1758-1758 (1997).

17.

17. I. Okazaki and B. Wunderlich , Macromol. Chem. Phys., Rapid Commun. 18, 313-313 (1997).

18.

18. K. Ishikiriyama and B. Wunderlich , Macromolecules, 30, 4126-4126 (1997).

19.

19. K. Ishikiryama and B. Wunderlich , J. Polymer Sci., Part B, Polymer Phys., 35, 1877-1877 (1997).

20.

20. W. Chen and B. Wunderlich , printed in part in the Proc. 25th NA TAS Conf. in McLean, VA, Sept. 7-9, 1997, R. G. Morgan , ed., 637-644; Thermochim Acta., in print (1998).

21.

21. K. Ishikiriyama , A. Boller , and B. Wunderlich , J. Thermal Analysis, 50, 547-547 (1997).

22.

22. A. Boller , M. Ribeiro , and B. Wunderlich , Proc. 25th NATAS Conf. in McLean, VA, Sept. 7-9, 1997, R. J. Morgan , Ed., 706-713.

23.

23. A. Boller , C. Schick , and B. Wunderlich , Thermochim. Acta, 266, 97-97 (1995).

24.

24. A. Boller , I. Okazaki , and B. Wunderlich , Thermochim. Acta 284, 1-1 (1996).

25.

25. B. Wunderlich . A. Boller , I. Okazaki , and S. Kreitmeier , J. Thermal Analysis, 47, 1013-1013 (1996).

26.

26. I. Okazaki and B. Wunderlich , J. Polymer Sci., Part B: Polymer Phys., 34, 2941-2941 (1996).

27.

27. B. Wunderlich and I. Okazaki , J. Thermal Analysis, 49, 57-57 (1997).