Modeling of Combined Creaming and Flocculation in Emulsions
A computer model is presented which simulates the simultaneous creaming and flocculation of emulsions. A cubic lattice model is used, with particles bonding together and breaking apart according to predefined probabilities. Creaming and diffusion are included, with different rates for different size...
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| Veröffentlicht in: | Journal of colloid and interface science 1997-02, Vol.186 (1), p.80-89 |
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| container_end_page | 89 |
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| container_issue | 1 |
| container_start_page | 80 |
| container_title | Journal of colloid and interface science |
| container_volume | 186 |
| creator | Pinfield, Valerie J. Dickinson, Eric Povey, Malcolm J.W. |
| description | A computer model is presented which simulates the simultaneous creaming and flocculation of emulsions. A cubic lattice model is used, with particles bonding together and breaking apart according to predefined probabilities. Creaming and diffusion are included, with different rates for different sizes of floc. Results are presented in the form of concentration profiles as a function of height, and as the variation of the pseudo-fractal dimension of the particle networks formed. In the numerical simulations, an increase in creaming rate was observed before a particle network formed which prevented further creaming. A sharp serum interface was seen. In the presence of bond breakage, creaming proceeded for a longer period and a more compact network was formed. These results explain some features observed experimentally in creaming and flocculating emulsions, but do not reproduce the rapid serum development seen in some cases. |
| doi_str_mv | 10.1006/jcis.1996.4642 |
| format | Article |
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A cubic lattice model is used, with particles bonding together and breaking apart according to predefined probabilities. Creaming and diffusion are included, with different rates for different sizes of floc. Results are presented in the form of concentration profiles as a function of height, and as the variation of the pseudo-fractal dimension of the particle networks formed. In the numerical simulations, an increase in creaming rate was observed before a particle network formed which prevented further creaming. A sharp serum interface was seen. In the presence of bond breakage, creaming proceeded for a longer period and a more compact network was formed. These results explain some features observed experimentally in creaming and flocculating emulsions, but do not reproduce the rapid serum development seen in some cases.</description><identifier>ISSN: 0021-9797</identifier><identifier>EISSN: 1095-7103</identifier><identifier>DOI: 10.1006/jcis.1996.4642</identifier><identifier>PMID: 9056306</identifier><identifier>CODEN: JCISA5</identifier><language>eng</language><publisher>San Diego, CA: Elsevier Inc</publisher><subject>Chemistry ; Colloidal state and disperse state ; creaming ; emulsions ; Emulsions. Microemulsions. 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A cubic lattice model is used, with particles bonding together and breaking apart according to predefined probabilities. Creaming and diffusion are included, with different rates for different sizes of floc. Results are presented in the form of concentration profiles as a function of height, and as the variation of the pseudo-fractal dimension of the particle networks formed. In the numerical simulations, an increase in creaming rate was observed before a particle network formed which prevented further creaming. A sharp serum interface was seen. In the presence of bond breakage, creaming proceeded for a longer period and a more compact network was formed. These results explain some features observed experimentally in creaming and flocculating emulsions, but do not reproduce the rapid serum development seen in some cases.</description><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>creaming</subject><subject>emulsions</subject><subject>Emulsions. Microemulsions. Foams</subject><subject>Exact sciences and technology</subject><subject>flocculation</subject><subject>General and physical chemistry</subject><issn>0021-9797</issn><issn>1095-7103</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><recordid>eNp1kE1LxDAQhoMoun5cvQk9ePDSdZImbYInWfwCxYueQzqdSqRtNNkK_ntbdvXmaYaZZ16Gh7FTDksOUF6-o09Lbky5lKUUO2zBwai84lDssgWA4LmpTHXADlN6B-BcKbPP9g2osoBywa6eQkOdH96y0Gar0Nd-oCZbRXL9PHRDk912AXHs3NqHIfNDdtOPXZr6dMz2WtclOtnWI_Z6e_Oyus8fn-8eVtePOUoo17kyWiDUpakIRd0SkMFCOqkrNBUAFRpJCiVqoUWtUbata0BoMgVwWaMujtjFJvcjhs-R0tr2PiF1nRsojMlyrQwXXBdyQpcbFGNIKVJrP6LvXfy2HOzsy86-7OzLzr6mg7Nt9lj31PzhW0HT_ny7dwld10Y3zAG_mFBlxaWaML3BaPLw5SnahJ4GpMZHwrVtgv_vgx-2poUZ</recordid><startdate>19970201</startdate><enddate>19970201</enddate><creator>Pinfield, Valerie J.</creator><creator>Dickinson, Eric</creator><creator>Povey, Malcolm J.W.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19970201</creationdate><title>Modeling of Combined Creaming and Flocculation in Emulsions</title><author>Pinfield, Valerie J. ; Dickinson, Eric ; Povey, Malcolm J.W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c406t-5982c0b697ec2bfe0e9c34a487c9700e38ce4252b282b8c4ffad028e93014bc83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>creaming</topic><topic>emulsions</topic><topic>Emulsions. 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Foams</topic><topic>Exact sciences and technology</topic><topic>flocculation</topic><topic>General and physical chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pinfield, Valerie J.</creatorcontrib><creatorcontrib>Dickinson, Eric</creatorcontrib><creatorcontrib>Povey, Malcolm J.W.</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of colloid and interface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pinfield, Valerie J.</au><au>Dickinson, Eric</au><au>Povey, Malcolm J.W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Modeling of Combined Creaming and Flocculation in Emulsions</atitle><jtitle>Journal of colloid and interface science</jtitle><addtitle>J Colloid Interface Sci</addtitle><date>1997-02-01</date><risdate>1997</risdate><volume>186</volume><issue>1</issue><spage>80</spage><epage>89</epage><pages>80-89</pages><issn>0021-9797</issn><eissn>1095-7103</eissn><coden>JCISA5</coden><abstract>A computer model is presented which simulates the simultaneous creaming and flocculation of emulsions. 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| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Chemistry Colloidal state and disperse state creaming emulsions Emulsions. Microemulsions. Foams Exact sciences and technology flocculation General and physical chemistry |
| title | Modeling of Combined Creaming and Flocculation in Emulsions |
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