| Elongational flow induced ordering in surfactant micelles and mesophases. | |
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MedLine Citation:
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PMID: 16471644 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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We have used small angle neutron scattering, SANS, to investigate the elongational flow induced ordering in surfactant micelles and mesophases. Spatially resolved SANS measurements have been used to determine the distribution of orientational ordering over the flow velocity pattern in an elongational flow cell, and comparison with the effects of shear flow are made. Two different surfactant systems have been studied, the charged wormlike mixed micelles of hexaethylene monododecyl ether, C16E6/hexadecyl trimethylammonium bromide, C16TAB (3% C16E(6)/5 mol% C16TAB), and the Lalpha lamellar phase of C16E6 (50.6 wt% C16E6 at 55 degrees C), and a substantially different response is observed. The orientational distribution of the Lalpha lamellar phase of C16E6 reflects the flow velocity pattern distribution within the cell, whereas for the wormlike mixed micelles of C16E6/C16TAB this is not the case, and this is associated with the shear thinning behavior of that system. |
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Authors:
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J Penfold; E Staples; I Tucker; P Carroll; I Clayton; J S Cowan; G Lawton; S Amin; A Ferrante; N Ruddock |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The journal of physical chemistry. B Volume: 110 ISSN: 1520-6106 ISO Abbreviation: J Phys Chem B Publication Date: 2006 Jan |
Date Detail:
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Created Date: 2006-02-13 Completed Date: 2006-08-14 Revised Date: 2007-03-23 |
Medline Journal Info:
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Nlm Unique ID: 101157530 Medline TA: J Phys Chem B Country: United States |
Other Details:
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Languages: eng Pagination: 1073-82 Citation Subset: - |
Affiliation:
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ISIS, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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