RIT Digital Archive

Paracrystal model of the high-temperature lamellar phase of a ternary microemulsion system

RIT Digital Archive

Show simple item record

dc.contributor.author Kotlarchyk, Michael
dc.contributor.author Ritzau, S.
dc.date.accessioned 2008-10-31T16:22:00Z
dc.date.available 2008-10-31T16:22:00Z
dc.date.issued 1991-10-01
dc.identifier.citation Journal of Applied Crystallography 24 (1991) 753-758 en_US
dc.identifier.issn 0021-8898
dc.identifier.uri http://hdl.handle.net/1850/7310
dc.description RIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
dc.description.abstract Small-angle neutron scattering was used to investigate the microstructure of the high-temperature L-alpha phase in the AOT/water/decane system [AOT = sodium bis(2-ethylhexyl) sulfosuccinate]. The system was modeled as randomly oriented lamellar stacks with a one-dimensional paracrystalline distortion. For samples injected into cells at high temperature, the two-dimensional Q maps show anisotropic scattering consistent with partial alignment of the phase, while samples injected near room temperature do not exhibit this feature. From the latter samples, it was found that a stack typically contains about 15 lamellae, about 80 angstrom apart. Each layer is coated by a diffuse surfactant interface with a characteristic thickness of approximately 9 angstrom. The fact that the scattering spectra do not exhibit maxima beyond the first order is explained by the observation that the Hosemann g factor gives about a 20% variation in the interlamellar spacing. The mean spacing is inversely proportional to the surfactant concentration, as expected for a lamellar phase. Overestimation of the zero-order scattering predicted by the paracrystal model is attributed primarily to improper treatment of the contrast between each layer and the space-filling lamellar matrix. en_US
dc.language.iso en_US en_US
dc.publisher Blackwell Publishing : Journal of Applied Crystallography en_US
dc.relation.ispartofseries vol. 24 en_US
dc.relation.ispartofseries no. 5 en_US
dc.relation.ispartofseries pps. 753-758 en_US
dc.subject Angle neutron-scattering en_US
dc.subject X-ray en_US
dc.title Paracrystal model of the high-temperature lamellar phase of a ternary microemulsion system en_US
dc.type Proceedings en_US
dc.identifier.url http://dx.doi.org/10.1107/S0021889890012213

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search RIT Digital Archive

Advanced Search


My Account