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(2 -乙基己基 )膦酸单 (2 -乙基己基 )酯钠盐 Na EHEHP为阴离子型表面活性剂 ,测得其临界胶团浓度 (CMC)为 2 .0× 1 0 - 2 mol· L- 1,聚丙烯酰胺 PAM的加入对其影响不大。对 Na EHEHP与 PAM相互作用的研究表明 ,当 Na EHEHP浓度小于 CMC时 ,两者没有相互作用 ;而当 Na EHEHP浓度大于 CMC时 ,与 PAM产生电粘效应。Na EHEHP与 PAM之间的相互作用是柔顺性较高的 PAM分子链缠绕在萃取剂钠盐胶束周围 ,形成胶束聚集体造成的。
(2 - ethylhexyl) phosphonic acid sodium salt of Na EHEHP is an anionic surfactant with a critical micelle concentration (CMC) of 2.0 × 10 -2 mol · L-1, polyacrylamide PAM added little effect on it. Studies on the interaction between Na EHEHP and PAM showed that there was no interaction between Na EHEHP and CMC when the concentration of Na EHEHP was lower than that of CMC. The interaction between Na EHEHP and PAM is caused by the entanglement of the more flexible PAM molecular chains around the extractive sodium salt micelles and the formation of micellar aggregates.