The structure of aqueous solutions of two polyoxyethylene non-ionic amphiphiles, C10E5 and C8E4, is studied by small-angle neutron-scattering along isothermal paths crossing the isotropic single-phase region from 0% to 100% amphiphile volume fractions. The scattered intensity I(k) shows a peak at a value km, which grows monotonically as the amphiphile volume fraction φ{symbol} increases. The interpretation of the scattering data lead to the following conclusion: as Φ increases the micellar structure becomes less and less sharp, but some orientational correlations between neighboring amphiphile molecules are preserved even in the pure amphiphile phase.

Small Angle Neutron Scattering Study of Concentrated Nonionic Amphiphile Solutions / V.Degiorgio, M.Corti, R.Piazza, L.Cantu', A.Rennie. - In: COLLOID AND POLYMER SCIENCE. - ISSN 0303-402X. - 269:5(1991), pp. 501-505.

Small Angle Neutron Scattering Study of Concentrated Nonionic Amphiphile Solutions

L.Cantu'
Penultimo
;
1991

Abstract

The structure of aqueous solutions of two polyoxyethylene non-ionic amphiphiles, C10E5 and C8E4, is studied by small-angle neutron-scattering along isothermal paths crossing the isotropic single-phase region from 0% to 100% amphiphile volume fractions. The scattered intensity I(k) shows a peak at a value km, which grows monotonically as the amphiphile volume fraction φ{symbol} increases. The interpretation of the scattering data lead to the following conclusion: as Φ increases the micellar structure becomes less and less sharp, but some orientational correlations between neighboring amphiphile molecules are preserved even in the pure amphiphile phase.
neutron scattering; Non-ionic micelles
Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)
1991
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/200367
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