TiO2 pigment suspension behaviour upon adsorption of polymeric dispersants

Farrokhpay, S. (2010) TiO2 pigment suspension behaviour upon adsorption of polymeric dispersants. Progress in Color, Colorants and Coatings, 3 2: 66-72.

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Author Farrokhpay, S.
Title TiO2 pigment suspension behaviour upon adsorption of polymeric dispersants
Formatted title
TiO2 pigment suspension behaviour upon adsorption of polymeric dispersants
Journal name Progress in Color, Colorants and Coatings
ISSN 2008-2134
Publication date 2010-01-01
Year available 2011
Sub-type Article (original research)
Volume 3
Issue 2
Start page 66
End page 72
Total pages 7
Place of publication Tehran, Iran
Publisher Institute for Color Science and Technology
Language eng
Formatted abstract
The influence of polymeric dispersants containing different functional
groups on TiO2 pigment particle suspension was investigated at pH 6.0
and 9.5, using rheology and particle size data. The dispersants chosen
were polyacrylic acid and modified polyacrylamides including homo and
copolymers modified with carboxylate and/or hydroxyl groups. The pigment
suspension was strongly affected by both pH and dispersant functional groups.
The pigment suspension exhibited a maximum yield stress and particle size at the
pigment isoelectric point. The presence of carboxylate groups in both polyacrylic
acid and anionic polyacrylamide copolymer altered the pigment dispersion
behaviour, reducing the suspension yield stress and mean particle size. The
polyacrylamide homo-polymer had negligible effect on the pigment dispersion
properties at pH 9.5, while it caused pigment particle aggregation at pH 6.0. The
hydroxyl-modified polyacrylamide had negligible effect on the pigment
dispersion at pH 6.0, but decreased the yield stress and the mean particle size at
pH 9.5.
Keyword TiO2 pigment
Polyacrylic acid
Polyacrylamide
Polymeric dispersant
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Available online: 09-01-2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
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Created: Mon, 22 Aug 2011, 21:42:49 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre