The determination of the structure and coverage of nonionic surfactant monolayers at the air-water interface using neutron reflection technique
Conference
·
OSTI ID:225264
- Oxford Univ. (United Kingdom). Physical Chemistry Lab.
The coverage and structure of the monododecyl ethers of oligoethylene glycols, C{sub 12}E{sub m}, where m = 2, 4, 6 and 8, adsorbed at the air-water interface have been studied by neutron reflection. At their c.m.c.s., the area per molecule is 33 {+-} 3 {angstrom}{sup 2} for C{sub 12}E{sub 2}, 44 {+-} 3 {angstrom}{sup 2} for C{sub 12}E{sub 4}, 55 {+-} 3 {angstrom}{sup 2} for C{sub 12}E{sub 6} and 62 {+-} 3 {angstrom}{sup 2} for C{sub 12}E{sub 8}. In terms of the width of a Gaussian distribution at 1/e of its height the thicknesses of the dodecyl chains are found to be constant at 16 {+-} 2 {angstrom} and those of the heads to vary from 11 to 19 {+-} 2 {angstrom} from m = 2 to 8. There is also found to be some overlap between the two chains at the interface.
- OSTI ID:
- 225264
- Report Number(s):
- CONF-941144--; ISBN 1-55899-278-2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Photoionization of N,N,N[prime],N[prime]-tetramethylbenzidine in a mixed micelle of ionic and nonionic surfactants: Electron spin-echo modulation and electron spin resonance studies
A neutron reflectivity study of the adsorption of aerosol-OT on self-assembled monolayers on silicon
Mixed micelles of SDS/C[sub 12]E[sub 6] and DTAC/C[sub 12]E[sub 6] surfactants
Journal Article
·
Wed Nov 27 23:00:00 EST 1991
· Journal of Physical Chemistry; (United States)
·
OSTI ID:7072545
A neutron reflectivity study of the adsorption of aerosol-OT on self-assembled monolayers on silicon
Journal Article
·
Sun Mar 24 23:00:00 EST 1996
· Journal of Colloid and Interface Science
·
OSTI ID:238017
Mixed micelles of SDS/C[sub 12]E[sub 6] and DTAC/C[sub 12]E[sub 6] surfactants
Journal Article
·
Wed May 19 00:00:00 EDT 1993
· Journal of the American Chemical Society; (United States)
·
OSTI ID:6235387