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水溶液中两亲药物盐酸异丙嗪-表面活性剂体系的胶束化行为(英文)

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物理化学学报 2011年第8期27卷 1900-1906页

作者： KABIR-UD-DIN KHAN Abbul Bashar naqvi andleeb z. Department of Chemistry Aligarh Muslim University

The behavior of the mixed amphiphilic drug promethazine hydrochloride(PMT) and cationic as well as nonionic surfactants was studied by *** cmc values of the PMT-surfactant systems decrease at a surfactant mole fraction of 0.1 and it then becomes *** critical micelle concentration(cmc) values are lower than the ideal cmc(cmc*) values for PMT/TX-100,PMT/TX-114,PMT/Tween 20,and PMT/Tween 60 *** the PMT/Tween 40,PMT/Tween 80,PMT/CPC,and PMT/CPB systems the cmc values are close to the cmc* *** indicates that PMT forms mixed micelles with these surfactants by attractive *** surface excess(Γmax) decreases in the presence of *** rigid structure of the drug makes adsorption easier and the contribution of the surfactant at the interface *** interaction parameters βm(for the mixed micelles) and βσ(for the mixed monolayer) are negative indicating attraction among the mixed components.

关键词：《物理化学学报》期刊摘要编辑部

不同浓度和温度时无机盐和尿素对抗抑郁剂药物丙咪嗪盐酸盐的胶束化行为的影响(英文)

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物理化学学报 2012年第4期28卷 885-891页

作者： KABIR-UD-DIN RUB Malik Abdul naqvi andleeb z. Department of Chemistry Aligarh Muslim UniversityAligarh 202002India

In the present study we report the micellization behavior of imipramine hydrochloride(IMP)in absence and presence of different concentrations of inorganic salts(LiCl,NaF,NaCl,NaBr,and KCl)and ureas(urea and thiourea)over the temperature range from 288.15 to 303.15 *** critical micellization concentrations(cmc)of drug and drug+additive systems were determined by conductometric technique. With increasing temperature the cmc first increases then *** cmc values were obtained at 293.15 K with or without *** presence of inorganic salts the cmc value decreases which is explained on the basis of nature and ion size of the added *** and thiourea also decrease the cmc at low concentrations(0.2 mmo·lL -1 urea and 0.1 mmo·lL -1 thiourea),but,at higher concentrations,increase in cmc is *** related thermodynamic parameters are also evaluated and discussed.

关键词：摘要编辑部编辑工作读者

混合胶束中Gemini阳离子表面活性剂14-s-14与常规表面活性剂的协同作用:连接臂及反离子效应(英文)

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物理化学学报 2010年第6期26卷 1565-1569页

作者： AzUM Naved naqvi andleeb z. AKRAM Mohd. KABIR-UD-DIN Department of Chemistry Aligarh Muslim University

The mixed micelle formation of binary cationic 14-s-14 gemini with conventional single chain surfactants was studied by conductivity *** critical micelle concentration(cmc) and the degree of counterion binding values(g) of the binary systems were *** results were analyzed by applying regular solution theory(RST) to calculate micellar compositions(X),activity coefficients(f1,f2),and the interaction parameters(β).The synergistic interactions of all the investigated cationic gemini+conventional surfactant combinations were found to be dependent upon the length of hydrophobic spacer of the gemini *** excess Gibbs free energy of mixing was evaluated,and it indicated relatively more stable mixed micelles for the binary combinations.

关键词：物理化学理论研究摘要