Abstract
The response of temperature-modulated differential scanning calorimetry (TMDSC) to irreversible crystallization of linear polymers was investigated by model calculations and compared to a number of measurements. Four different exotherms were added to a typical modulated, reversible heat-flow rate in order to simulate irreversible crystallization. It was found that the reversing heat-flow rate of the TMDSC in response to such irreversible crystallization exotherms is strongly affected by tbe shape of the transition and the phase-angle where the exotherm occurs. A comparison with the experimental data gave valuable insight into the transitions, as well as the nature of the TMDSC response which is usually limited to an analysis of the first harmonic term of the Fourier series that describes the heat-flow rate.
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I. Okazaki and B. Wunderlich, Macromol. Chem., Rapid Commun., 18 (1997) 313.
I. Okazaki and B. Wunderlich, Macromolecules, 30 (1997) 1758.
M. Pyda, A. Boller, J. Grebowicz, H. Chuah and B. Wunderlich, J. Polymer Sci., Part B: Polymer Phys., 36 (1998) 2499; see also Proc. 25th NATAS Conf. in McLean, Va., Sept. 7–9, R. G. Morgan ed., (1997) 87.
K. Ishikiriyama, M. Pyda, G. Zhang, T. Forschner, J. Grebowicz and B. Wunderlich, J. Macromol. Sci.-Phys., B37 (1997) 27.
A. Wurm, M. Merzlyakov and C. Schick, submitted for publication in Coll. Polym. Sci.
K. Ishikiriyama and B. Wunderlich, Macromolecules, 30 (1997) 4126.
B. Wunderlich, Disc. Farad. Soc., 68 (1979) 239.
B. Wunderlich and A. Mehta, J. Polym. Sci., Polymer Phys. Ed., 12 (1979) 255.
K. Ishikiriyama and B. Wunderlich, J. Polymer Sci., Part B, Polymer Phys., 35 (1997) 1877.
A. Toda, C. Tomita, T. Oda, M, Hikosaka and Y. Saruyama, Proc. 25th NATAS Conf. in McLean, Va., Sept. 7–9, R. G. Morgan ed., (1997) 645.
B. Wunderlich, A. Boller, I. Okazaki, K. Ishikiriyama, W. Chen, M. Pyda, J. Pak, I. Moon and R. Androsch, accepted for publication in Thermochim. Acta.
B. Wunderlich, J. Thermal Anal., 48 (1997) 207.
B. Wunderlich and I. Okazaki, J. Thermal Anal., 49 (1997) 57.
L. C. Thomas, A. Boller, I. Okazaki and B. Wunderlich, Thermochim. Acta, 291 (1997) 85.
B. Wunderlich, I. Okazaki, K. Ishikiriyama and A. Boller, Thermochim. Acta, 324 (1998) 77.; see also Proc. 25th NATAS Conf. in McLean, Va., Sept. 7–9, R. G. Morgan, ed. (1997) 49.
R. Androsch, I. Moon, S. Kreitmeier and B. Wunderlich, Thermochim. Acta, accepted for publication in (1999).
M. L. Di Lorenzo, R. Androsch, M. Pyda and B. Wunderlich, in preparation.
C. Silvestre, S. Cimmino, E. D'Alma, M. L. Di Lorenzo and E. Di Pace, accepted for publication in Polymer.
The ATHAS Web-site URL: http://web.utk.edu/~athas.
B. Wunderlich, Y. Jin and A. Boller, Thermochim. Acta, 238 (1994) 277.
M. L. Di Lorenzo and B. Wunderlich, unpublished data.
Mettler Toledo Stare software, Version 5.0, Mettler Toledo GmbH, Analytical Sonnenberg-strasse 74, CH-8603 Schwerzenbach, Switzerland.
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Di Lorenzo, M.L., Wunderlich, B. Temperature-modulated Calorimetry of the Crystallization of Polymers Analyzed by Measurements and Model Calculations. Journal of Thermal Analysis and Calorimetry 57, 459–472 (1999). https://doi.org/10.1023/A:1010163923965
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DOI: https://doi.org/10.1023/A:1010163923965