The influences of sodium dodecylbenzene sulfonate(SDBS) on the viscosity and surface tension of the copolymer of acrylamide, sodium acrylate and octadecyl dimethylallyl ammonium chloride have been examined. The result...The influences of sodium dodecylbenzene sulfonate(SDBS) on the viscosity and surface tension of the copolymer of acrylamide, sodium acrylate and octadecyl dimethylallyl ammonium chloride have been examined. The results showed that the viscosity of the polymer solution increased with addition of SDBS and reached to a maximum value, then decreased with further addition of SDBS. The surface tension of the mixture solution decreased with the increase of SDBS concentration. The results have been discussed.展开更多
The relationship between activity coefficient and molecule exchanging energy of surfactants in the surface monolayer of binary surfactant aqueous solutions has been deduced with the help of two dimensional crystal mod...The relationship between activity coefficient and molecule exchanging energy of surfactants in the surface monolayer of binary surfactant aqueous solutions has been deduced with the help of two dimensional crystal model. The results show the relationship between the synergism of surfactants and the molecule exchanging energy. Through the parameter of molecule interaction( β s), the value of the molecule exchanging energy can be obtained by equation ε =2.3×10 -24 β s T that has been examined with six typical surfactant systems.展开更多
This review covers equilibrium and dynamic aspects of surface tension and adsorption,primarily of single non micellar or premicellar and micellar surfactants at the air/water interface.Equilibrium tension data have be...This review covers equilibrium and dynamic aspects of surface tension and adsorption,primarily of single non micellar or premicellar and micellar surfactants at the air/water interface.Equilibrium tension data have been related to the Langmuir adsorption equilibrium isothem and the Gibbs isothem.A minute description of the measurement and the curve analysis of the dynamic surface tension is given.Dynamic adsorption models with the diffusioncontrolled and mixed kinetic mechanisms are discussed in some detail and applied to several sets of data.Apparent diffusion coefficients,inferred from dynamic tension data,and kinetic adsorption parameters,derived from application of the models to the data,are presented and critically evaluated.The adsorption of most of the surfactants examined is slower than predicted by diffusion controlled models.Exceptions are mostly non ionic surfactants and certain alcohols.展开更多
文摘The influences of sodium dodecylbenzene sulfonate(SDBS) on the viscosity and surface tension of the copolymer of acrylamide, sodium acrylate and octadecyl dimethylallyl ammonium chloride have been examined. The results showed that the viscosity of the polymer solution increased with addition of SDBS and reached to a maximum value, then decreased with further addition of SDBS. The surface tension of the mixture solution decreased with the increase of SDBS concentration. The results have been discussed.
文摘The relationship between activity coefficient and molecule exchanging energy of surfactants in the surface monolayer of binary surfactant aqueous solutions has been deduced with the help of two dimensional crystal model. The results show the relationship between the synergism of surfactants and the molecule exchanging energy. Through the parameter of molecule interaction( β s), the value of the molecule exchanging energy can be obtained by equation ε =2.3×10 -24 β s T that has been examined with six typical surfactant systems.
文摘This review covers equilibrium and dynamic aspects of surface tension and adsorption,primarily of single non micellar or premicellar and micellar surfactants at the air/water interface.Equilibrium tension data have been related to the Langmuir adsorption equilibrium isothem and the Gibbs isothem.A minute description of the measurement and the curve analysis of the dynamic surface tension is given.Dynamic adsorption models with the diffusioncontrolled and mixed kinetic mechanisms are discussed in some detail and applied to several sets of data.Apparent diffusion coefficients,inferred from dynamic tension data,and kinetic adsorption parameters,derived from application of the models to the data,are presented and critically evaluated.The adsorption of most of the surfactants examined is slower than predicted by diffusion controlled models.Exceptions are mostly non ionic surfactants and certain alcohols.
