Solid-liquid interfacial energy of neopentylglycol

Ocak Y., Akbulut S., Keşlioǧlu K., Maraşlı N.

Journal of Colloid and Interface Science, vol.320, no.2, pp.555-562, 2008 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 320 Issue: 2
  • Publication Date: 2008
  • Doi Number: 10.1016/j.jcis.2008.01.008
  • Journal Name: Journal of Colloid and Interface Science
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.555-562
  • Keywords: organic materials, crystal growth, interfacial energy, grain boundary energy, thermal conductivity ratio
  • Istanbul Gelisim University Affiliated: No

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 (Γ), solid-liquid interfacial energy (σSL), and grain boundary energy (σgb) of NPG have been determined to be (7.4 ± 0.7) × 10-8 K m, (7.9 ± 1.2) × 10-3 J m-2, and (15.4 ± 2.5) × 10-3 J m-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. © 2008 Elsevier Inc. All rights reserved.