In-situ Characterization of Drying Particulate Coatings
| Autor: | Masato Yamamura |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | KONA Powder and Particle Journal, Vol 29, Iss 0, Pp 39-52 (2014) |
| Druh dokumentu: | article |
| ISSN: | 0288-4534 2187-5537 |
| DOI: | 10.14356/kona.2011008 |
| Popis: | Film thin drying is a process to create functional interfaces in solidifying liquids, rather than to separate volatile components from solutions or suspensions. Indeed, recent developments in coating technologies have shed light on self-organization in evaporating complex thin fluids. In particulate coatings, final properties of dried film depend not only on initial liquid compositions but also the imposed drying conditions, which significantly influence local particle distributions, contact area of rigid and/or deformable particles, anisotropic particle orientation, and amounts of adsorbed molecules on particle surfaces. It is of importance to understand how a directional film shrinkage and spontaneous solidification constrain the particle motions, and how they induce particular film structures in a non-equilibrium state. Recently, there has been a great deal of progress in measurement techniques and numerical approaches for analyzing transient structures in evaporating thin liquid films. This article presents an overview of current research activities on local, in-situ determination of (i) fluid properties at air-liquid and liquid-liquid interfaces, and (ii) distributions of particles or solutes in the thickness direction in shrinking films. |
| Databáze: | Directory of Open Access Journals |
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