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通过表面张力和电导率测定,研究了全氟辛酸铵/四烷基铵(C7F15COON(CnH2n+1)4,n=0,1,2,3,4)与聚氧乙烯(PEO,分子量20000)和聚氧乙烯聚氧丙烯三嵌段共聚物(Pluronic F68)的相互作用.结果表明,对PEO-C7F15COON(CnH2n+1)4混合体系,只有全氟辛酸铵、全氟辛酸四甲铵与PEO之间有明显的相互作用.对F68-C7F15COON(CnH2n+1)4混合体系,只有全氟辛酸四丁铵未发现与F68有明显的相互作用.说明全氟辛酸盐的反离子越大,其与高聚物间的相互作用越弱.增加高聚物的疏水性可以增强表面活性剂与高聚物的相互作用.
The effects of ammonium perfluorooctanoate / tetraalkylammonium (C7F15COON (CnH2n + 1) 4, n = 0,1,2,3,4) with polyoxyethylene (PEO, molecular weight 20,000) and poly (Pluronic F68). The results showed that only the interaction between ammonium perfluorooctanoate, tetramethylammonium perfluorooctanoate and PEO for PEO-C7F15COON (CnH2n + 1) 4 mixed system was obvious .There was no significant interaction between F68-C7F15COON (CnH2n + 1) 4 and tetrabutylammonium perfluorooctanoate for F68-C7F15COON (CnH2n + 1) 4, indicating that the larger the counterion of perfluorooctanoate, the weaker its interaction with the polymer Increasing the hydrophobicity of the polymer enhances the interaction of the surfactant with the polymer.