Can I read Interfacial Effects during Phase Change in Multiple Levitated Tetrahydrofuran Hydrate Droplets on EtoBox?

Interfacial Effects during Phase Change in Multiple Levitated Tetrahydrofuran Hydrate Droplets by McElligott, Adam; Guerra, André; Denoncourt, Alexia; Rey, Alejandro D.; Servio, Phillip is a scholarly article available to read on EtoBox.

What is Interfacial Effects during Phase Change in Multiple Levitated Tetrahydrofuran Hydrate Droplets about?

In this study, using direct digital and infrared imaging techniques, the freezing of up to three simultaneous THF hydrate droplets was investigated for the first time. Nucleation was initiated at the aqueous solution-air interface. Two pseudo-heterogeneous mechanisms created additional nucleation interfaces: one from cavitation effects entraining microbubbles and another from subvisible ice particles, also called hydrate nucleating particles (HNPs), impacting the droplet surface. For systems containing droplets in both the second and third positions, nucleation was statistically simultaneous between all droplets. This effect may have been caused by the high liquid-solid interfacial pressures that developed at nucleation, causing some cracking in the initial hydrate shell around the droplet and releasing additional HNPs (now of hydrate) into the air. During crystallization, the THF hydrate droplets developed a completely white opacity, termed optical clarity loss or OCL. It was suggested that high hydrate growth rates within the droplet resulted in the capture of tiny air bubbles within the solid phase. In turn, light refraction through many smaller bubbles resulted in the OCL. Thes

Author

McElligott, Adam; Guerra, André; Denoncourt, Alexia; Rey, Alejandro D.; Servio, Phillip

Published

2023

Language

EN