Research output: Contribution to journal › Article › peer-review
Kinetics of adsorption layer formation in solutions of polyacid/surfactant complexes. / Bykov, Alexey G.; Lin, Shi Y.; Loglio, MGiuseppe; Miller, Reinhard; Noskov, Boris A.
In: Journal of Physical Chemistry C, Vol. 113, No. 14, 09.04.2009, p. 5664-5671.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Kinetics of adsorption layer formation in solutions of polyacid/surfactant complexes
AU - Bykov, Alexey G.
AU - Lin, Shi Y.
AU - Loglio, MGiuseppe
AU - Miller, Reinhard
AU - Noskov, Boris A.
PY - 2009/4/9
Y1 - 2009/4/9
N2 - The dynamic dilational elasticity of adsorption layers of the complexes between polyacids and dodecyltrimethyl ammonium bromide were measured by the oscillating ring method as a function of surface age and surfactant concentration. The concentration dependencies of surface tension and dilational surface elasticity are similar to the corresponding dependencies of other polyelectrolyte/surfactant solutions. At the same time, the kinetic dependencies of the dynamic surface elasticity differ significantly from the results for other systems and exhibit in respective concentration ranges one or two local maxima. The first maximum and the associated distortion of the harmonical surface tension oscillations are caused by an aggregate formation in the surface layer. The second maximum occurs simultaneously with a multilayer formation at the liquid surface, which probably results in a new relaxation mechanism of surface stresses. The hydrophobic interactions influence the height and position of the second elasticity maximum, which is more pronounced for complexes of DTAB with the more hydrophobic polymethacrylic acid as compared to the poly(acrylic acid), and the surface tension values in the plateau region.
AB - The dynamic dilational elasticity of adsorption layers of the complexes between polyacids and dodecyltrimethyl ammonium bromide were measured by the oscillating ring method as a function of surface age and surfactant concentration. The concentration dependencies of surface tension and dilational surface elasticity are similar to the corresponding dependencies of other polyelectrolyte/surfactant solutions. At the same time, the kinetic dependencies of the dynamic surface elasticity differ significantly from the results for other systems and exhibit in respective concentration ranges one or two local maxima. The first maximum and the associated distortion of the harmonical surface tension oscillations are caused by an aggregate formation in the surface layer. The second maximum occurs simultaneously with a multilayer formation at the liquid surface, which probably results in a new relaxation mechanism of surface stresses. The hydrophobic interactions influence the height and position of the second elasticity maximum, which is more pronounced for complexes of DTAB with the more hydrophobic polymethacrylic acid as compared to the poly(acrylic acid), and the surface tension values in the plateau region.
UR - http://www.scopus.com/inward/record.url?scp=65249097249&partnerID=8YFLogxK
U2 - 10.1021/jp810471y
DO - 10.1021/jp810471y
M3 - Article
AN - SCOPUS:65249097249
VL - 113
SP - 5664
EP - 5671
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 14
ER -
ID: 13746385