Structural modification of water in the confined layer of a lamellar liquid crystal

✍ Scribed by J.M. Baker; J.C. Dore; J.M. Seddon; A.K. Soper

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 285 KB
• Volume: 256
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(96)00494-0

✦ Synopsis

Neutron diffraction measurements have been made on water confined in the lamellar phase (La) of the amphiphile tetraethylene glycol n-dodecyi ether (C12E4). Using a first-order difference procedure, the structure factor for a planar water layer of 58 A thickness confined between surfactant sheets has been obtained. Comparison with bulk water at the same temperature shows that there is enhanced hydrogen-bonding in the water layer and modification of the inter-molecular structure over the intermediate range (2.5-8 ~). These results suggest that the connectivity of the H-bonded network is influenced by the geometrical confinement imposed by the surfactant interface.