Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Dilational viscoelasticity of PEO-PPO-PEO triblock copolymer films at the air-water interface in the range of high surface pressures. / Noskov, B. A.; Lin, S. Y.; Loglio, G.; Rubio, R. G.; Miller, R.
в: Langmuir, Том 22, № 6, 14.03.2006, стр. 2647-2652.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Dilational viscoelasticity of PEO-PPO-PEO triblock copolymer films at the air-water interface in the range of high surface pressures
AU - Noskov, B. A.
AU - Lin, S. Y.
AU - Loglio, G.
AU - Rubio, R. G.
AU - Miller, R.
PY - 2006/3/14
Y1 - 2006/3/14
N2 - The dynamic dilational elasticity of adsorbed and spread films of PEO-PPO-PEO triblock copolymers at the air-water interface was measured as a function of surface pressure, surface age, and frequency. At low surface pressures (< 10 mN/m), the surface viscoelasticity is identical to that of PEO homopolymer films. The results at higher surface pressures can be explained by the desorption of PPO segments from the interface and then mixing with PEO segments in water. Unlike some recent results, the spread and adsorbed films are not identical. Spread films exhibit a maximum real part of the dynamic surface elasticity of about 20 mN/m and probably begin to dissolve in water at surface pressures above 19 mN/m. However, the surface elasticity of the adsorbed films decreases beyond the maximum, indicating the formation of a loose surface structure.
AB - The dynamic dilational elasticity of adsorbed and spread films of PEO-PPO-PEO triblock copolymers at the air-water interface was measured as a function of surface pressure, surface age, and frequency. At low surface pressures (< 10 mN/m), the surface viscoelasticity is identical to that of PEO homopolymer films. The results at higher surface pressures can be explained by the desorption of PPO segments from the interface and then mixing with PEO segments in water. Unlike some recent results, the spread and adsorbed films are not identical. Spread films exhibit a maximum real part of the dynamic surface elasticity of about 20 mN/m and probably begin to dissolve in water at surface pressures above 19 mN/m. However, the surface elasticity of the adsorbed films decreases beyond the maximum, indicating the formation of a loose surface structure.
UR - http://www.scopus.com/inward/record.url?scp=33645498115&partnerID=8YFLogxK
U2 - 10.1021/la052662d
DO - 10.1021/la052662d
M3 - Article
AN - SCOPUS:33645498115
VL - 22
SP - 2647
EP - 2652
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 6
ER -
ID: 13747057