Karakashev Stoyan Ivanov, Manev Emil Deyanov
Department of Physical Chemistry, St. Kliment Ohridski University of Sofia, 1 James Bourchier Boulevard, Sofia, 1126, Bulgaria
J Colloid Interface Sci. 2001 Mar 1;235(1):194-196. doi: 10.1006/jcis.2000.7288.
The influence of inorganic salts (KCl, KBr, NaI, KI) and organic salts, tetrapentyl ammonium bromide (TPeAB) and tetrabutyl ammonium bromide (TBuAB), on the decay of a foam column from aqueous solutions of octaethyleneglycol mono-n-decylether (C(10)E(8)) has been investigated. The salt concentration in all cases was maintained constant (0.01 M). The results from the measurements of the foam decay rates indicate that, of the inorganic electrolytes, KBr is a foam destabilizer, KCl does not influence the froth stability, and NaI and KI act as foam stabilizers. Both TBuAB and TPeAB generate greater initial quantities of foam. Concurrently, both organic salts accelerate the destruction of the foam in the initial stage of drainage, the effect of TBuAB being stronger. It was established also that in the later stage of drainage, where black films form (here C(10)E(8) bulk concentration is 5 x 10(-4) M and its C(bl)=10(-4) M), TPeAB acts as foam destabilizer, while TBuAB does not influence the foam stability. Copyright 2001 Academic Press.
研究了无机盐（KCl、KBr、NaI、KI）和有机盐四戊基溴化铵（TPeAB）及四丁基溴化铵（TBuAB）对由八甘醇单正癸醚（C(10)E(8)）水溶液形成的泡沫柱衰变的影响。所有情况下盐浓度均保持恒定（0.01 M）。泡沫衰变率的测量结果表明，在无机电解质中，KBr是泡沫破坏剂，KCl不影响泡沫稳定性，而NaI和KI起到泡沫稳定剂的作用。TBuAB和TPeAB都会产生更多的初始泡沫量。同时，两种有机盐在排水初始阶段都会加速泡沫的破坏，TBuAB的作用更强。还确定在排水后期，即形成黑膜时（此处C(10)E(8)本体浓度为5×10⁻⁴ M且其C(bl)=10⁻⁴ M），TPeAB起到泡沫破坏剂的作用，而TBuAB不影响泡沫稳定性。版权所有2001年学术出版社。
