NEW BOOK
Contents
Preface
Section 1: Fabrication of Powders
Chapter 1
Conductive powder synthesis technology for improving electrical conductivity by one-pot ultrasonic spray pyrolysis process
by Hye Young Koo and Dahee Park
Chapter 2
Features of the powder application in Direct Laser Deposition Technology
by Marina Gushchina, Olga Klimova-Korsmik and Gleb Turichin
Section 2: Wettability of Powders
Chapter 3
An application of bio-inspired superwetting surfaces: water collection
by Chang Li, Zhongshi Ni and Ying Li
Chapter 4
Wettability of probiotics powders: fundamentals, methodologies, and applications
by Mohamed Amin Ali, Joël De Coninck and Hary L. Razafindralambo
Abstract
Wettability is a macroscopic consequence of microscopic phenomena occurring at the fluid-solid interfaces. This functional property is crucial for the formulation of wettable powders in food and non-food sectors. Basically, powder wettability is mostly assessed through the contact angle measurements of solid particles reacting with dispersing media, by either the sessile drop method or the capillary rise technique. Among the most popular bioactive agents nowadays are probiotics and their metabolites, which are receiving a growing interest for their beneficial effects on our ecosystem health. As live functional ingredients, probiotics are mainly available in a powder form that is sensitive to the environmental stress factors during processing and storage steps. It is therefore crucial to understand and control their wettability, regarding their performance, dispersibility, and stability when probiotic particles come into contact with dispersing media and body fluids. The proposal chapter aims to review: (1) the theoretical aspects of powder wettability by considering compact and porous materials; (2) the analytical tools and methodologies of measurement, including sessile drop and capillary rise methods using models Lucas-Washburn equation and Darcy's law; and (3) the applications to probiotic powders as functional ingredients in food and agricultural sectors.
Keywords: wettability, probiotic powders, contact angle measurement, capillary rise method, porosity, cell surface hydrophobicity, cell viability
Chapter 5
Wetting of solid iron by Molten FeO-containing slag
by Volodymyr Shatokha and Yuri Korobeynikow
Section 3: Consolidation of Powders
Chapter 6
Spark plasma Sintering of NiCrSiBC alloys
by Escarlet Batista da Silva, Marcia Giardinieri Azevedo, Lioudmila Aleksandrovna Matlakhova, Barbara Ferreira de Oliveira and Luciano José de Oliveira
Chapter 7
Experimentation and optimization of multilayered aluminium-based functionally graded materials
by Pattapagalu Naga Sudhakar Srinivas, Pittam Srinivas Rao, Kolari Deepak and Nallamilli Srinivas Reddy