Breakup of Double Emulsion Droplets in a Tapered Nozzle
When double emulsion droplets flow through a tapered nozzle, the droplets may break up and cause the core to be released. We model the system on the basis of the capillary instability and show that a droplet will not break up when the tilt angle of the nozzle is larger than 9°. For smaller tilt angl...
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| Veröffentlicht in: | Langmuir 2011-04, Vol.27 (8), p.4324-4327 |
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| container_title | Langmuir |
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| creator | Li, Jiang Chen, Haosheng Stone, Howard A |
| description | When double emulsion droplets flow through a tapered nozzle, the droplets may break up and cause the core to be released. We model the system on the basis of the capillary instability and show that a droplet will not break up when the tilt angle of the nozzle is larger than 9°. For smaller tilt angles, whether the droplet breaks up also depends on the diameter ratio of the core of the droplet to the orifice of the nozzle. We verified this mechanism by experiments. The ideas are useful for the design of nozzles not only to break droplets for controlled release but also to prevent the droplet from rupturing in applications requiring the reinjection of an emulsion. |
| doi_str_mv | 10.1021/la200473h |
| format | Article |
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We model the system on the basis of the capillary instability and show that a droplet will not break up when the tilt angle of the nozzle is larger than 9°. For smaller tilt angles, whether the droplet breaks up also depends on the diameter ratio of the core of the droplet to the orifice of the nozzle. We verified this mechanism by experiments. The ideas are useful for the design of nozzles not only to break droplets for controlled release but also to prevent the droplet from rupturing in applications requiring the reinjection of an emulsion.</description><identifier>ISSN: 0743-7463</identifier><identifier>EISSN: 1520-5827</identifier><identifier>DOI: 10.1021/la200473h</identifier><identifier>PMID: 21417281</identifier><identifier>CODEN: LANGD5</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Chemistry ; Colloidal state and disperse state ; Emulsions. Microemulsions. 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We model the system on the basis of the capillary instability and show that a droplet will not break up when the tilt angle of the nozzle is larger than 9°. For smaller tilt angles, whether the droplet breaks up also depends on the diameter ratio of the core of the droplet to the orifice of the nozzle. We verified this mechanism by experiments. The ideas are useful for the design of nozzles not only to break droplets for controlled release but also to prevent the droplet from rupturing in applications requiring the reinjection of an emulsion.</description><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Emulsions. Microemulsions. 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Foams</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Jiang</creatorcontrib><creatorcontrib>Chen, Haosheng</creatorcontrib><creatorcontrib>Stone, Howard A</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Langmuir</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Jiang</au><au>Chen, Haosheng</au><au>Stone, Howard A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Breakup of Double Emulsion Droplets in a Tapered Nozzle</atitle><jtitle>Langmuir</jtitle><addtitle>Langmuir</addtitle><date>2011-04-19</date><risdate>2011</risdate><volume>27</volume><issue>8</issue><spage>4324</spage><epage>4327</epage><pages>4324-4327</pages><issn>0743-7463</issn><eissn>1520-5827</eissn><coden>LANGD5</coden><abstract>When double emulsion droplets flow through a tapered nozzle, the droplets may break up and cause the core to be released. We model the system on the basis of the capillary instability and show that a droplet will not break up when the tilt angle of the nozzle is larger than 9°. For smaller tilt angles, whether the droplet breaks up also depends on the diameter ratio of the core of the droplet to the orifice of the nozzle. We verified this mechanism by experiments. The ideas are useful for the design of nozzles not only to break droplets for controlled release but also to prevent the droplet from rupturing in applications requiring the reinjection of an emulsion.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>21417281</pmid><doi>10.1021/la200473h</doi><tpages>4</tpages></addata></record> |
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| ispartof | Langmuir, 2011-04, Vol.27 (8), p.4324-4327 |
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| language | eng |
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| source | ACS Publications |
| subjects | Chemistry Colloidal state and disperse state Emulsions. Microemulsions. Foams Exact sciences and technology General and physical chemistry |
| title | Breakup of Double Emulsion Droplets in a Tapered Nozzle |
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