1. RRI Digital Repository
  2. 06. Soft Condensed Matter
  3. Research Papers (SCM)
Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3558
Full metadata record
DC FieldValueLanguage
dc.contributor.authorVijayaraghavan, D.-
dc.contributor.authorSuresh, K.A.-
dc.date.accessioned2008-06-10T11:28:13Z-
dc.date.available2008-06-10T11:28:13Z-
dc.date.issued2007-01-
dc.identifier.citationMolecular Crystals and Liquid Crystals, 2007, Vol.478, p15en
dc.identifier.issnE-ISSN: 1563-5287-
dc.identifier.issnP-ISSN: 1058-725X-
dc.identifier.urihttp://hdl.handle.net/2289/3558-
dc.descriptionRestricted Access.en
dc.description.abstractThe bound water in aqueous micellar systems like the Cesium perfluoroprooctanoate (CsPFO)/water has been extensively studied using molecular simulations. However, suitable experimental techniques to probe the bound water (hydrogen bonded water molecules to the micellar surface) in these systems are lacking, as the hydration layer is very thin. The free or bulk water magnetic susceptibility is related to the number of hydrogen bonds between the water molecules. Hence, one can employ the magnetic susceptibility studies to probe the bound water effectively when the micellar aggregation number is small. With this view, we have carried out magnetic susceptibility studies on CsPFO/water system in the isotropic phase for various concentrations. We find that the susceptibility increases with decrease in temperature, exhibits a maximum and then decreases linearly. The decrease in susceptibility with decrease in temperature below the maximum can be related to the aggregation number of the micelles. On the other hand, the increasing trend in the susceptibility at higher temperatures (where the aggregation number of the micelles is small) may be attributed to the bound water. Further, we find that with decreasing concentration of CsPFO, the susceptibility maximum shifts towards the low temperature side indicating that the bound water extends to lower temperatures. From our magnetic studies, we infer that at very low concentrations of CsPFO (< 15 wt%), the bound water can be present even at room temperature. This is in agreement with the reported molecular simulation studies carried out for the same concentration of CsPFO.en
dc.format.extent138313 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherTaylor and Francisen
dc.relation.urihttp://dx.doi.org/10.1080/15421400701732399en
dc.rights2007 Taylor & Francisen
dc.subjectbound wateren
dc.subjectlyotropic liquid crystalen
dc.subjectmagnetic susceptibilityen
dc.subjectmicellesen
dc.titleMagnetic susceptibility studies on a lyotropic liquid crystal system- the role of bound wateren
dc.typeArticleen
Appears in Collections:Research Papers (SCM)

Files in This Item:
File Description SizeFormat 
2007 MCLC Vol.478 p771.pdf
  Restricted Access		Restricted Access135.07 kBAdobe PDFView/Open Request a copy
Show simple item record


Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.