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Colloid and Polymer Science
Published in: Colloid and Polymer Science 2/2010

01-01-2010 | Original Contribution

Convectional, sedimentary, and drying dissipative patterns of colloidal suspensions of polymer complexes of poly(acrylic acid) with poly(ethylene glycol) and poly(vinyl pyrrolidone)

Authors: Tsuneo Okubo, Junichi Okamoto, Akira Tsuchida

Published in: Colloid and Polymer Science | Issue 2/2010

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Abstract

Convectional, sedimentary, and drying dissipative patterns were observed at room temperature on a cover glass, a watch glass, and a Petri dish during the course of dryness of aqueous suspensions of colloidal polymer complexes of poly(acrylic acid) (HPAA) with poly(ethylene glycol) (PEG) and poly(vinyl pyrrolidone) (PVP). With increase in the molecular weight of the polymer component, the complexes showed from transparent solution stable colloidal dispersion and the sticky aggregates. HPAA25K + PVP25K complex showed bluish colors and the colloidal crystal suspension. Size of the macroscopic broad rings of HPAA25K + PEG decreased as molecular weight of PEG increased. Furthermore, the size increased sharply as the polymer concentration increased in the complex systems HPAA25K + PVP25K. Characteristic microscopic patterns appeared for HPAA + PEG and HPAA + PVP complexes.
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Metadata
Title
Convectional, sedimentary, and drying dissipative patterns of colloidal suspensions of polymer complexes of poly(acrylic acid) with poly(ethylene glycol) and poly(vinyl pyrrolidone)
Authors
Tsuneo Okubo
Junichi Okamoto
Akira Tsuchida
Publication date
01-01-2010
Publisher
Springer-Verlag
Published in
Colloid and Polymer Science / Issue 2/2010
Print ISSN: 0303-402X
Electronic ISSN: 1435-1536
DOI
https://doi.org/10.1007/s00396-009-2152-7

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