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三、阴离子表面活性剂的作用机理 现在看来,Sf胶束和被增溶物质之间,可能有三种相互作用的方式:静电作用、疏水作用、亲核作用。这三种作用力有时同时发生,有时只有一种或两种起作用。静电作用是指胶束界面电场与配合物所带电荷之间的相互作用,这种作用力只有在离子型Sf的情况下才存在。疏水作用在本文第一节已经提及,是指分子的非极性部分彼此间的相互作用力,属于远程作用力。亲核作用是指某些含氧Sf与染料之间可能形成的氢键。 我们曾在十二烷基硫酸钠(记作SDS)存在下,用ECAB光度法测定矿石中微量被;用光度法研究乳化剂迷OP或SDS对ECAB各级酸离解常数的影响,其结果如下:
Third, the mechanism of action of anionic surfactants It now appears, Sf micelles and solubilized substances, there may be three ways of interaction: electrostatic interaction, hydrophobic interaction, nucleophilic effect. These three forces sometimes occur simultaneously, sometimes only one or two work. Electrostatic interaction refers to the interaction between the electric field at the interface of the micelle and the charges carried by the complex, which force exists only in the ionic form of Sf. Hydrophobicity has been mentioned in the first section of this paper, which refers to the interaction between the non-polar parts of molecules, which belongs to the remote force. Nucleophilicity refers to the possible hydrogen bonding between some oxygen-containing Sf and the dye. We have used ECAB photometry to determine trace amounts in ores in the presence of sodium dodecyl sulfate (denoted as SDS). The effect of emulsifier OP or SDS on various levels of acid dissociation constants was studied spectrophotometrically :