Solid-liquid interfacial energy of neopentylglycol |
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| Authors: | Ocak Y Akbulut S Keşlioğlu K Maraşli N |
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| Institution: | Faculty of Arts and Sciences, Department of Physics, Erciyes University, 38039 Kayseri, Turkey. |
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| Abstract: | The grain boundary groove shapes for equilibrated solid neopentylglycol (2,2-dimethyl-1,3-propanediol) (NPG) with its melt were directly observed by using a horizontal temperature gradient stage. From the observed grain boundary groove shapes, the Gibbs-Thomson coefficient (Gamma), solid-liquid interfacial energy (sigma(SL)), and grain boundary energy (sigma(gb)) of NPG have been determined to be (7.4+/-0.7)x10(-8) Km, (7.9+/-1.2)x10(-3) Jm(-2), and (15.4+/-2.5)x10(-3) Jm(-2), respectively. The ratio of thermal conductivity of equilibrated liquid phase to solid phase for the NPG has also been measured to be 1.07 at the melting temperature. |
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| Keywords: | Organic materials Crystal growth Interfacial energy Grain boundary energy Thermal conductivity ratio |
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