【摘要】 对于由二(2-乙基己基)磷酸钠(NaDEHP)、正辛烷和金属盐水溶液组成的微乳体系,研究了金属离子(Na+、Ca2+、Mn2+、Fe3+、Co2+、Ni2+、Cu2+、Zn2+、Al3+)对相行为的影响。随金属盐水溶液浓度增加,体系发生WinsorI→Ⅲ→Ⅱ型转变。含不同金属盐的体系产生中相微乳液的金属盐浓度范围(中相盐宽)是不同的。所研究的金属离子按中相盐宽增加排出的顺序是:Fe3+<Cu2+<Al3+<Co2+<Mn2+<Zn2+<Ni2+<Ca2+ Na+。在多价金属离子的情况下,强烈影响微乳体系相行为的主要因素是金属-HDEHP络合物的亲油性。更多还原

【Abstract】 The effects of metal ion(Na+?Ca2+?Mn2+?Fe3+?Co2+?Ni2+?Cu2+?Zn2+ and Al3+)on the phase behavior in the microemulsion systems sodium di-(2-ethylhexyl)phosphate (NaDEHP)/n-octane/aqueous metal salt solution have been investigated.The transition of Winsor type Ⅰ→Ⅲ→Ⅱ in these systems occurred as the concentration of metal ion increased.In the systems containing different metal salts,the range of metal salt concentration where the middle phase is generated(salinity width of middle phase,△c) is defferent.The metal ions investigated can be arranged in increasing order of △c as Fe3+<Cu2+<Al3+<Co2+<Mn2+<Zn2+<Ni2+<Ca2+Na+?In the case of multivalent metal ion,the major factor affecting strongly the phase behavior is the hydrophobicity of metal HDEHP complex.更多还原