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Effect of ionic liquids CnmimBr on properties of gemini surfactant 12 - 3 - 12 aqueous solution / Yazhuo Shang in Industrial & engineering chemistry research, Vol. 49 N° 18 (Septembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 18 (Septembre 2010) . - pp. 8852–8857 Titre : Effect of ionic liquids CnmimBr on properties of gemini surfactant 12 - 3 - 12 aqueous solution Type de document : texte imprimé Auteurs : Yazhuo Shang, Auteur ; Tengfang Wang, Auteur ; Xia Han, Auteur Année de publication : 2010 Article en page(s) : pp. 8852–8857 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Ionic  liquids Résumé : The effect of ionic liquids CnmimBr (n = 4, 6, 8) on the properties of cationic Gemini surfactant trimethylene-1,3-bis(dodecyl ammonium bromide) (Gemini 12-3-12) aqueous solution was investigated. The critical micelle concentration (cmc) of Gemini 12-3-12 solutions containing different amounts of ionic liquids were obtained by measurement of surface tension. The composition of mixed micelle and the interaction parameter between ionic liquids and Gemini 12-3-12 were calculated by Rubingh regular solution model; the effective area of Gemini 12-3-12 molecule at air/water interface was calculated by Gibbs adsorption isotherm. The results show that the addition of ionic liquid has important effect on the properties of surfactant aqueous solution. The cmc of surfactant solution and the effective area of surfactant molecules at the air/water interface vary parabolically with the addition of ionic liquids owing to the two extra opposite effects of ionic liquids in surfactant aqueous solutions besides counterion effect, participation of micelles formation, and the effect on the properties of solvent. The effect of ionic liquids on surfactant solution can be regarded as the comprehensive effects of inorganic salt, cosurfactant, and cosolvent on surfactant solution. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100896z [article] Effect of ionic liquids CnmimBr on properties of gemini surfactant 12 - 3 - 12 aqueous solution [texte imprimé] / Yazhuo Shang, Auteur ; Tengfang Wang, Auteur ; Xia Han, Auteur . - 2010 . - pp. 8852–8857. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 18 (Septembre 2010) . - pp. 8852–8857 Mots-clés : Ionic  liquids Résumé : The effect of ionic liquids CnmimBr (n = 4, 6, 8) on the properties of cationic Gemini surfactant trimethylene-1,3-bis(dodecyl ammonium bromide) (Gemini 12-3-12) aqueous solution was investigated. The critical micelle concentration (cmc) of Gemini 12-3-12 solutions containing different amounts of ionic liquids were obtained by measurement of surface tension. The composition of mixed micelle and the interaction parameter between ionic liquids and Gemini 12-3-12 were calculated by Rubingh regular solution model; the effective area of Gemini 12-3-12 molecule at air/water interface was calculated by Gibbs adsorption isotherm. The results show that the addition of ionic liquid has important effect on the properties of surfactant aqueous solution. The cmc of surfactant solution and the effective area of surfactant molecules at the air/water interface vary parabolically with the addition of ionic liquids owing to the two extra opposite effects of ionic liquids in surfactant aqueous solutions besides counterion effect, participation of micelles formation, and the effect on the properties of solvent. The effect of ionic liquids on surfactant solution can be regarded as the comprehensive effects of inorganic salt, cosurfactant, and cosolvent on surfactant solution. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100896z

Microphase separation and morphology of the real polymer system by dynamic density functional theory, based on the equation of state / Hui Xu in Industrial & engineering chemistry research, Vol. 47 N°17 (Septembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°17 (Septembre 2008) . - p. 6368–6373 Titre : Microphase separation and morphology of the real polymer system by dynamic density functional theory, based on the equation of state Type de document : texte imprimé Auteurs : Hui Xu, Auteur ; Tengfang Wang, Auteur ; Yongmin Huang, Auteur Année de publication : 2008 Article en page(s) : p. 6368–6373 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Polystyrene  blends  Polybutadiene  blends  EOS-based  DDFT Résumé : Microphase separation and morphology evolution of polystyrene and polybutadiene blends are quantitatively studied by the dynamic density functional theory that is based on the equation of state (EOS-based DDFT). The structure parameters of coarse-grained beads are regressed from the experimental pressure−volume−temperature data of pure components. The comparisons between simulated and experimental results are presented as illustrations. Notably, in the region near the critical composition, the deviation of the order−disorder transition temperature between simulation and experiment is <10 °C. Considering the fact that EOS-based DDFT is a unique simulation method that can predict the morphologies of blends in the different temperatures and compositions and match the simulated and experimental results in the same time, which is beyond the capabilities of the phase equilibrium theory and other simulation methods, such a deviation is obvious, but definitely acceptable. The factors that affect the accuracy of the simulation results are discussed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie701776r [article] Microphase separation and morphology of the real polymer system by dynamic density functional theory, based on the equation of state [texte imprimé] / Hui Xu, Auteur ; Tengfang Wang, Auteur ; Yongmin Huang, Auteur . - 2008 . - p. 6368–6373. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°17 (Septembre 2008) . - p. 6368–6373 Mots-clés : Polystyrene  blends  Polybutadiene  blends  EOS-based  DDFT Résumé : Microphase separation and morphology evolution of polystyrene and polybutadiene blends are quantitatively studied by the dynamic density functional theory that is based on the equation of state (EOS-based DDFT). The structure parameters of coarse-grained beads are regressed from the experimental pressure−volume−temperature data of pure components. The comparisons between simulated and experimental results are presented as illustrations. Notably, in the region near the critical composition, the deviation of the order−disorder transition temperature between simulation and experiment is <10 °C. Considering the fact that EOS-based DDFT is a unique simulation method that can predict the morphologies of blends in the different temperatures and compositions and match the simulated and experimental results in the same time, which is beyond the capabilities of the phase equilibrium theory and other simulation methods, such a deviation is obvious, but definitely acceptable. The factors that affect the accuracy of the simulation results are discussed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie701776r