Rupturing of bitumen-in-water emulsions: experimental evidence for viscous sintering phenomena

Autor:	J.J. Potti, Fernando Leal-Calderon, P. Méléard, John Philip, P. Bardusco, J. Petkov, L. Bonakdar
Rok vydání:	2001
Předmět:	Materials science Kinetics Sintering Physics::Fluid Dynamics Condensed Matter::Soft Condensed Matter Viscosity Colloid and Surface Chemistry Asphalt Condensed Matter::Superconductivity visual_art Emulsion Contraction rate visual_art.visual_art_medium Relaxation (physics) Ceramic Composite material
Zdroj:	Colloids and Surfaces A: Physicochemical and Engineering Aspects. 176:185-194
ISSN:	0927-7757
DOI:	10.1016/s0927-7757(00)00699-3
Popis:	In this paper, we present experimental evidence for viscous sintering phenomena in a gel formed by bitumen emulsion droplets. When a destabilizing agent is added to the initially stable emulsion, a gel forms, which, further contracts by preserving the geometry of the container. The observed contraction phenomenon is reminiscent of the classical sintering process in ceramics, aerogels, etc. We study the shape relaxation of two coalesced droplets using a micropipette technique as well as the contraction kinetics of the macroscopic gel. The linear dependence of the contraction rate on the viscosity of the bitumen is in agreement with the classical viscous sintering theory.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::156382ef2ef0cd82b70cbe15d040d40d https://doi.org/10.1016/s0927-7757(00)00699-3 Zobrazit plný text záznamu Full Text from ScienceDirect