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Proceedings Paper

Two-dimensional thermal analysis of organic molecular crystals and polymeric spherulites by microscale thermography
Author(s): Junko Morikawa; Eita Hayakawa; Kazuyuki Ikuo; Toshimasa Hashimoto
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Paper Abstract

We report on the application of two-dimensional micro-scale thermal analysis with a high-speed infrared (IR) camera equipped with an originally designed optics for the optimum wavelength 3 - 5 micron in order to observe the exothermic latent heat and thermal diffusion during the phase transitions of organic molecular crystals (n-alkanes; n- pentacosane, ntetracosane, and n- tricosane) and polymeric spherulites of poly(ethylene oxide) (PEO). The forerunning phenomenon of phase transition was visualized as the spatial temperature fluctuation by a two-dimensional differential calculus. The exothermic heat patterns of the lamellae growth of n- alkanes and that of spherulites in the radial direction of PEO were observed.

Paper Details

Date Published: 3 May 2010
PDF: 9 pages
Proc. SPIE 7661, Thermosense XXXII, 76610S (3 May 2010); doi: 10.1117/12.849873
Show Author Affiliations
Junko Morikawa, Tokyo Institute of Technology (Japan)
Eita Hayakawa, ai-Phase Co., Ltd. (Japan)
Kazuyuki Ikuo, Seki Technotron Corp. (Japan)
Toshimasa Hashimoto, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 7661:
Thermosense XXXII
Ralph B. Dinwiddie; Morteza Safai, Editor(s)

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