Abstract
The dynamic heat capacity of polyethylene was measured in the heating process over two decades of the modulating frequency using the light heating modulated temperature DSC. The dynamic heat capacity exhibited clear frequency dependence from 95°C to the end of the melting of the crystals. Frequency dependence of this work was compared with that of the quasi-isothermal measurement. The relaxation time estimated in this work was much shorter than that of the quasi-isothermal measurement. It was found that notable heat exchange between the sample and reference sides occurred between 120 and 135°C. Frequency dependence of the heat exchange was studied.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
E. A. Turi, Thermal Characterization of Polymeric Materials, Academic Press, New York 1997.
P. S. Gill, S. R. Sauerbrunn and M. Reading, J. Thermal Anal., 40 (1993) 931.
M. Reading, D. Elliott and V. L. Hill, J. Thermal Anal., 40 (1993) 949.
M. Nishikawa and Y. Saruyama, Thermochim. Acta, 267 (1995) 75.
Y. Saruyama, J. Therm. Anal. Cal., 54 (1998) 687.
Y. Saruyama, Thermochim. Acta, 330 (1999) 101.
A. Toda, C. Tomita and M. Hikosaka, J. Therm. Anal. Cal., 54 (1998) 623.
A. Toda, C. Tomita, M. Hikosaka and Y. Saruyama, Polymer, 39 (1998) 5093.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Saruyama, Y. Frequency Dependence of the Dynamic Heat Capacity at the Melting Temperature of Polyethylene Crystals. Journal of Thermal Analysis and Calorimetry 59, 271–278 (2000). https://doi.org/10.1023/A:1010156500754
Issue Date:
DOI: https://doi.org/10.1023/A:1010156500754