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Dynamics of water confined in non-ionic amphiphiles supramolecular structures

✍ Scribed by Francesco Mallamace; John C. Earnshaw; Norberto Micali; Sebastiano Trusso; Cirino Vasi

Book ID
103896212
Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
718 KB
Volume
231
Category
Article
ISSN
0378-4371

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✦ Synopsis

Light scattering studies of water properties in supramolecular structures of the aqueous solutions of polyoxyethylene non-ionic amphiphiles C10E5 are presented. Raman and Depolarized Rayleigh spectra are studied to obtain the OH stretching vibrational contribution and the rotational relaxational time of water along an isothermal path, crossing the isotropic one-phase region from 0 to 1 amphiphile volume fraction ~b, and at the structural phase transitions at relatively large umphiphiles concentrations. Data analysis of the vibrational mode points out that the structure of bound water presents a local fourfold-coordinated environment, whereas the water rotational dynamics evidences a behavior that depends on the packing effects of the amphiphile aggregates.

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