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Effects of Particle Size and Molecular Weight of Polyethylenimine on Properties of Nanoparticulate Silicon Dispersions

Dietrich, Astrid and Neubrand, Achim (2001):
Effects of Particle Size and Molecular Weight of Polyethylenimine on Properties of Nanoparticulate Silicon Dispersions.
84, In: Journal of the American Ceramic Society, (4), pp. 806-812, ISSN 0002-7820, [Online-Edition: http://dx.doi.org/10.1111/j.1151-2916.2001.tb00745.x],
[Article]

Abstract

The effect of particle size on the zeta potential and theology of nanoparticulate SiO2 dispersions stabilized with the polymer polyethylenimine (PEI) was investigated experimentally, The particle size and molecular weight of the polymer had only a small influence on the amount of PEI needed and the achieved zeta potential of the suspensions. The polymer concentration range within which a stable dispersion could be produced was very narrow for the smallest particle size. Higher-molecular-weight PEI was more suitable to stabilize small particle dispersions. Under optimum conditions, Newtonian flow behavior was achieved for dispersions of 20 nm particles with a solids content as high as 25 vol%.

Item Type: Article
Erschienen: 2001
Creators: Dietrich, Astrid and Neubrand, Achim
Title: Effects of Particle Size and Molecular Weight of Polyethylenimine on Properties of Nanoparticulate Silicon Dispersions
Language: English
Abstract:

The effect of particle size on the zeta potential and theology of nanoparticulate SiO2 dispersions stabilized with the polymer polyethylenimine (PEI) was investigated experimentally, The particle size and molecular weight of the polymer had only a small influence on the amount of PEI needed and the achieved zeta potential of the suspensions. The polymer concentration range within which a stable dispersion could be produced was very narrow for the smallest particle size. Higher-molecular-weight PEI was more suitable to stabilize small particle dispersions. Under optimum conditions, Newtonian flow behavior was achieved for dispersions of 20 nm particles with a solids content as high as 25 vol%.

Journal or Publication Title: Journal of the American Ceramic Society
Volume: 84
Number: 4
Uncontrolled Keywords: TETRAGONAL ZIRCONIA; POLY(ACRYLIC ACID); SUSPENSIONS; NITRIDE; ADSORPTION; BEHAVIOR
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 14 Jul 2011 08:48
Official URL: http://dx.doi.org/10.1111/j.1151-2916.2001.tb00745.x
Identification Number: doi:10.1111/j.1151-2916.2001.tb00745.x
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