Highly concentrated emulsions: 1. Average drop size determination by analysis of incoherent polarized steady light transport.
Identifieur interne : 000169 ( Ncbi/Merge ); précédent : 000168; suivant : 000170Highly concentrated emulsions: 1. Average drop size determination by analysis of incoherent polarized steady light transport.
Auteurs : Emilio Paruta-Tuarez [France] ; Hala Fersadou ; Véronique Sadtler ; Philippe Marchal ; Lionel Choplin ; Christophe Baravian ; Christophe CastelSource :
- Journal of colloid and interface science [ 1095-7103 ] ; 2010.
Descripteurs français
- KwdFr :
- MESH :
- synthèse chimique : Tensioactifs, Émulsions.
- Lumière, Propriétés de surface, Taille de particule, Tensioactifs, Émulsions.
English descriptors
- KwdEn :
- MESH :
- chemical , chemical synthesis : Emulsions, Surface-Active Agents.
- chemical , chemistry : Emulsions, Surface-Active Agents.
- Light, Particle Size, Surface Properties.
Abstract
The analysis of incoherent polarized steady light transport is reported as a convenient technique for the drop size determination in highly concentrated oil-in-water emulsions. The studied system consists in heptane-in-water emulsions stabilized with a copolymeric surfactant (Synperonic PE®/L64). Hundred grams of parent emulsions, at two volume fractions of dispersed phase (φ=0.958 and 0.937) were prepared using a semi-batch process. Then, they were diluted with the aqueous phase to obtain volume fractions ranging from 0.886 to 0.958. The use of a copolymeric surfactant allows the dilution of the highly concentrated emulsions without any change in the particle size distribution as confirmed by laser diffraction measurements. We found that the polarization technique allows the determination of the film thickness between water drops rather than their sizes. Consequently, we propose a geometrical relationship to determine an average drop size from the film thickness. The sensitivity of this alternative technique to detect changes in average drop size was studied by changing some process and formulation parameters. Drop size determination in highly concentrated emulsions via this method is useful since the measurement protocol neither involves dilution nor induces structural changes in the emulsion.
DOI: 10.1016/j.jcis.2010.02.036
PubMed: 20227707
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The studied system consists in heptane-in-water emulsions stabilized with a copolymeric surfactant (Synperonic PE®/L64). Hundred grams of parent emulsions, at two volume fractions of dispersed phase (φ=0.958 and 0.937) were prepared using a semi-batch process. Then, they were diluted with the aqueous phase to obtain volume fractions ranging from 0.886 to 0.958. The use of a copolymeric surfactant allows the dilution of the highly concentrated emulsions without any change in the particle size distribution as confirmed by laser diffraction measurements. We found that the polarization technique allows the determination of the film thickness between water drops rather than their sizes. Consequently, we propose a geometrical relationship to determine an average drop size from the film thickness. The sensitivity of this alternative technique to detect changes in average drop size was studied by changing some process and formulation parameters. Drop size determination in highly concentrated emulsions via this method is useful since the measurement protocol neither involves dilution nor induces structural changes in the emulsion.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">20227707</PMID><DateCreated><Year>2011</Year><Month>09</Month><Day>29</Day></DateCreated><DateCompleted><Year>2012</Year><Month>01</Month><Day>20</Day></DateCompleted><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1095-7103</ISSN><JournalIssue CitedMedium="Internet"><Volume>346</Volume><Issue>1</Issue><PubDate><Year>2010</Year><Month>Jun</Month><Day>1</Day></PubDate></JournalIssue><Title>Journal of colloid and interface science</Title><ISOAbbreviation>J Colloid Interface Sci</ISOAbbreviation></Journal><ArticleTitle>Highly concentrated emulsions: 1. Average drop size determination by analysis of incoherent polarized steady light transport.</ArticleTitle><Pagination><MedlinePgn>136-42</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.jcis.2010.02.036</ELocationID><Abstract><AbstractText>The analysis of incoherent polarized steady light transport is reported as a convenient technique for the drop size determination in highly concentrated oil-in-water emulsions. The studied system consists in heptane-in-water emulsions stabilized with a copolymeric surfactant (Synperonic PE®/L64). Hundred grams of parent emulsions, at two volume fractions of dispersed phase (φ=0.958 and 0.937) were prepared using a semi-batch process. Then, they were diluted with the aqueous phase to obtain volume fractions ranging from 0.886 to 0.958. The use of a copolymeric surfactant allows the dilution of the highly concentrated emulsions without any change in the particle size distribution as confirmed by laser diffraction measurements. We found that the polarization technique allows the determination of the film thickness between water drops rather than their sizes. Consequently, we propose a geometrical relationship to determine an average drop size from the film thickness. The sensitivity of this alternative technique to detect changes in average drop size was studied by changing some process and formulation parameters. Drop size determination in highly concentrated emulsions via this method is useful since the measurement protocol neither involves dilution nor induces structural changes in the emulsion.</AbstractText><CopyrightInformation>Copyright © 2010 Elsevier Inc. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Paruta-Tuarez</LastName><ForeName>Emilio</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Centre de Génie Chimique des Milieux Rhéologiquement Complexes (GEMICO), ENSIC, Nancy-Université, 1 rue Grandville BP 20451, 54001 Nancy, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Fersadou</LastName><ForeName>Hala</ForeName><Initials>H</Initials></Author><Author ValidYN="Y"><LastName>Sadtler</LastName><ForeName>Véronique</ForeName><Initials>V</Initials></Author><Author ValidYN="Y"><LastName>Marchal</LastName><ForeName>Philippe</ForeName><Initials>P</Initials></Author><Author ValidYN="Y"><LastName>Choplin</LastName><ForeName>Lionel</ForeName><Initials>L</Initials></Author><Author ValidYN="Y"><LastName>Baravian</LastName><ForeName>Christophe</ForeName><Initials>C</Initials></Author><Author ValidYN="Y"><LastName>Castel</LastName><ForeName>Christophe</ForeName><Initials>C</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2010</Year><Month>02</Month><Day>19</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Colloid Interface Sci</MedlineTA><NlmUniqueID>0043125</NlmUniqueID><ISSNLinking>0021-9797</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D004655">Emulsions</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D013501">Surface-Active Agents</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" 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IdType="pubmed">20227707</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>France</li></country><region><li>Grand Est</li><li>Lorraine (région)</li></region><settlement><li>Nancy</li></settlement><orgName><li>Nancy-Université</li></orgName></list><tree><noCountry><name sortKey="Baravian, Christophe" sort="Baravian, Christophe" uniqKey="Baravian C" first="Christophe" last="Baravian">Christophe Baravian</name><name sortKey="Castel, Christophe" sort="Castel, Christophe" uniqKey="Castel C" first="Christophe" last="Castel">Christophe Castel</name><name sortKey="Choplin, Lionel" sort="Choplin, Lionel" uniqKey="Choplin L" first="Lionel" last="Choplin">Lionel Choplin</name><name sortKey="Fersadou, Hala" sort="Fersadou, Hala" uniqKey="Fersadou H" first="Hala" last="Fersadou">Hala Fersadou</name><name sortKey="Marchal, Philippe" sort="Marchal, Philippe" uniqKey="Marchal P" first="Philippe" last="Marchal">Philippe Marchal</name><name sortKey="Sadtler, Veronique" sort="Sadtler, Veronique" uniqKey="Sadtler V" first="Véronique" last="Sadtler">Véronique Sadtler</name></noCountry><country name="France"><region name="Grand Est"><name sortKey="Paruta Tuarez, Emilio" sort="Paruta Tuarez, Emilio" uniqKey="Paruta Tuarez E" first="Emilio" last="Paruta-Tuarez">Emilio Paruta-Tuarez</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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