Open AccessElectrophoretic kinetics of nanomullite, nanoSiC and their composite suspensions
Author(s) -
Shakeri Mohammad Sadegh,
Alizadeh Masoud,
Kazemzadeh Asghar,
Ebadzadeh Touradj,
Aghajani Hossein
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2017.0290
Subject(s) - zeta potential , materials science , surface charge , electrophoresis , triethanolamine , suspension (topology) , chemical engineering , composite number , particle (ecology) , electrophoretic deposition , pulmonary surfactant , particle aggregation , charge density , composite material , analytical chemistry (journal) , chromatography , chemistry , nanotechnology , coating , nanoparticle , mathematics , physics , oceanography , quantum mechanics , homotopy , geology , pure mathematics , engineering
In detail characterisation of suspensions including nanomullite, nanosilicon carbide and various percentages of their composites has been studied in this Letter. Mechanism of particle ionisation, alternate pH and surface charge, particle size distribution, zeta potential, current density, electrophoresis movement and kinetics of time–weight curves has been studied, thoroughly. It was illustrated that triethanolamine cannot stabilise powders as well. However, poly‐vinyl pyrrolidone could stabilise the particles as well but the particles could not move easily in the presence of applied electrical field due to the lack of enough surface charge. In this case, iodine (I) could be utilised as the preferred surfactant due to good stability and enough surface charge even though it could increase the concentration of free ions and conductivity of particles may be decreased. It was also found that in the case of utilising optimum surfactant, the amount of zeta potential for mullite suspension is more than composite powder and these two have a greater zeta potential than SiC suspension. Last but not least, it was found that the velocity of deposition reduces by increasing the time and its reduction depends on resistance and permittivity of suspension.