Order of Polyoxyethylene Chains in the Lamellar Phase of a Nonionic Surfactant
- 1 January 1988
- journal article
- liquid crystals
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics
- Vol. 154 (1) , 55-60
- https://doi.org/10.1080/00268948808078721
Abstract
Lamellar samples of aqueous tetraethylene glycol n-dodecyl ether in varying degrees of selective deuteration were studied by 2H NMR spectroscopy. Order parameter profiles for both the alkyl and oxyethylene head group chain have been obtained. A maximum in the order of the surfactant molecules was found to occur 3-4 methylene segments from the alkyl/headgroup interface on the alkyl chain. Order decreased rapidly with position on either side of this region giving an approximately symmetrical profile.Keywords
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