Dynamics of water confined in non-ionic amphiphiles supramolecular structures

Francesco Mallamace, John C. Earnshaw, Norberto Micali, Sebastiano Trusso and Cirino Vasi

Physica A: Statistical Mechanics and its Applications, 1996, vol. 231, issue 1, 207-219

Abstract: 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 φ, and at the structural phase transitions at relatively large amphiphiles 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.

Date: 1996
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:231:y:1996:i:1:p:207-219

DOI: 10.1016/0378-4371(95)00461-0

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