The distribution and configuration of surfactants at interface in surfactant-water-oil systems have been investigated using discontinuous molecular dynamic simulations. There exists a certain equilibrium concentration...The distribution and configuration of surfactants at interface in surfactant-water-oil systems have been investigated using discontinuous molecular dynamic simulations. There exists a certain equilibrium concentration of surfactants at interface for the systems with certain interactions among surfactant, water and oil. The interface length and equilibrium morphology of the systems are dependent on the equilibrium concentration of surfactants at interface and the total amount of surfactants. The interaction strengths among surfactant, water and oil determine the equilibrium concentration of surfactants at interface. Three typical configurations of surfactants at interface have been observed: ailene1 surfactant 0 molecules are perpendicular to the interface and arranged closely; ailene2 perpendicular to the interface and arranged at interval 0 of two particles; ailene3 lie down in the interface partly. 0 Key words surfactant - phase separation - equilibrium configuration CLC number O 469 - O 64 Foundation item: Supported by the National Natural Science Foundation of China (10274056) and the Foundation of the Education Ministry of Hubei ProvinceBiography: YUAN Yin-quan (1964-), male, Ph. D., research direction: soft matter.展开更多
文摘The distribution and configuration of surfactants at interface in surfactant-water-oil systems have been investigated using discontinuous molecular dynamic simulations. There exists a certain equilibrium concentration of surfactants at interface for the systems with certain interactions among surfactant, water and oil. The interface length and equilibrium morphology of the systems are dependent on the equilibrium concentration of surfactants at interface and the total amount of surfactants. The interaction strengths among surfactant, water and oil determine the equilibrium concentration of surfactants at interface. Three typical configurations of surfactants at interface have been observed: ailene1 surfactant 0 molecules are perpendicular to the interface and arranged closely; ailene2 perpendicular to the interface and arranged at interval 0 of two particles; ailene3 lie down in the interface partly. 0 Key words surfactant - phase separation - equilibrium configuration CLC number O 469 - O 64 Foundation item: Supported by the National Natural Science Foundation of China (10274056) and the Foundation of the Education Ministry of Hubei ProvinceBiography: YUAN Yin-quan (1964-), male, Ph. D., research direction: soft matter.
