TY - JOUR

T1 - Surface dynamic elasticity of poly(ethylene oxide) monolayers on a water surface

AU - Akentiev, A. V.

AU - Noskov, B. A.

PY - 2002/3/1

Y1 - 2002/3/1

N2 - The methods of transverse and longitudinal surface waves and of oscillating barrier were used to measure a surface dynamic elasticity of poly(ethylene oxide) films spread on aqueous substrate within the frequency range of 0.001-520 Hz. Unlike the adsorption films, the main relaxation processes in the spread poly(ethylene oxide) films are observed at higher frequencies. A comparison of static and dynamic values of the surface elasticity shows that the surface film at surface polymer concentrations higher than 0.4 mg/m2 cannot be considered already as purely two-dimensional film. It was found that the surface tension (surface pressure) can be insufficiently sensitive to conformational transformations in the surface polymer films.

AB - The methods of transverse and longitudinal surface waves and of oscillating barrier were used to measure a surface dynamic elasticity of poly(ethylene oxide) films spread on aqueous substrate within the frequency range of 0.001-520 Hz. Unlike the adsorption films, the main relaxation processes in the spread poly(ethylene oxide) films are observed at higher frequencies. A comparison of static and dynamic values of the surface elasticity shows that the surface film at surface polymer concentrations higher than 0.4 mg/m2 cannot be considered already as purely two-dimensional film. It was found that the surface tension (surface pressure) can be insufficiently sensitive to conformational transformations in the surface polymer films.

UR - http://www.scopus.com/inward/record.url?scp=0012215517&partnerID=8YFLogxK

U2 - 10.1023/A:1015227006697

DO - 10.1023/A:1015227006697

M3 - Article

AN - SCOPUS:0012215517

VL - 64

SP - 129

EP - 134

JO - Colloid Journal

JF - Colloid Journal

SN - 1061-933X

IS - 2

ER -