Structure of Colloidal Flocs in relation to the Dynamic Properties of Unstable Suspension
Dynamic behaviors of unstable colloidal dispersions are reviewed in terms of floc formation. Geometrical structure of flocs in terms of chemical conditions and formation mechanics is a key to predict macroscopic transportation properties. The rate of sedimentation and rheological properties can be d...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2012/574878 |
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| author | Yasuhisa Adachi Azusa Kobayashi Motoyoshi Kobayashi |
| author_facet | Yasuhisa Adachi Azusa Kobayashi Motoyoshi Kobayashi |
| author_sort | Yasuhisa Adachi |
| collection | DOAJ |
| description | Dynamic behaviors of unstable colloidal dispersions are reviewed in terms of floc formation. Geometrical structure of flocs in terms of chemical conditions and formation mechanics is a key to predict macroscopic transportation properties. The rate of sedimentation and rheological properties can be described with the help of fractal dimension (D) that is the function of the number of contacts between clusters (Nc). It is also well known that the application of water soluble polymers and polyelectrolytes, which are usually used as a conditioner or flocculants in colloidal dispersions, critically affects the process of flocculation. The resulted floc structure is also influenced by the application of polymer. In order to reveal the roles of the polymers, the elementary rate process of polymer reaching to colloidal interface and subsequent reconformation process into more stable adsorption state are needed to be analyzed. The properties of permeable flocs and adsorbed polymer (polyelectrolyte) layers formed on the colloidal surfaces remain to be worked out in relation to inhomogeneous porous structure and electrokinetics in the future. |
| format | Article |
| id | doaj-art-1dced0d74d5e4a628ecf9bdb1536b1e6 |
| institution | OA Journals |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-1dced0d74d5e4a628ecf9bdb1536b1e62025-08-20T02:01:39ZengWileyInternational Journal of Polymer Science1687-94221687-94302012-01-01201210.1155/2012/574878574878Structure of Colloidal Flocs in relation to the Dynamic Properties of Unstable SuspensionYasuhisa Adachi0Azusa Kobayashi1Motoyoshi Kobayashi2Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Ibaraki 305-8572, JapanGraduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Ibaraki 305-8572, JapanGraduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Ibaraki 305-8572, JapanDynamic behaviors of unstable colloidal dispersions are reviewed in terms of floc formation. Geometrical structure of flocs in terms of chemical conditions and formation mechanics is a key to predict macroscopic transportation properties. The rate of sedimentation and rheological properties can be described with the help of fractal dimension (D) that is the function of the number of contacts between clusters (Nc). It is also well known that the application of water soluble polymers and polyelectrolytes, which are usually used as a conditioner or flocculants in colloidal dispersions, critically affects the process of flocculation. The resulted floc structure is also influenced by the application of polymer. In order to reveal the roles of the polymers, the elementary rate process of polymer reaching to colloidal interface and subsequent reconformation process into more stable adsorption state are needed to be analyzed. The properties of permeable flocs and adsorbed polymer (polyelectrolyte) layers formed on the colloidal surfaces remain to be worked out in relation to inhomogeneous porous structure and electrokinetics in the future.http://dx.doi.org/10.1155/2012/574878 |
| spellingShingle | Yasuhisa Adachi Azusa Kobayashi Motoyoshi Kobayashi Structure of Colloidal Flocs in relation to the Dynamic Properties of Unstable Suspension International Journal of Polymer Science |
| title | Structure of Colloidal Flocs in relation to the Dynamic Properties of Unstable Suspension |
| title_full | Structure of Colloidal Flocs in relation to the Dynamic Properties of Unstable Suspension |
| title_fullStr | Structure of Colloidal Flocs in relation to the Dynamic Properties of Unstable Suspension |
| title_full_unstemmed | Structure of Colloidal Flocs in relation to the Dynamic Properties of Unstable Suspension |
| title_short | Structure of Colloidal Flocs in relation to the Dynamic Properties of Unstable Suspension |
| title_sort | structure of colloidal flocs in relation to the dynamic properties of unstable suspension |
| url | http://dx.doi.org/10.1155/2012/574878 |
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