Research of Foam Performance of 3-Dodecyloxy-2-hydroxypropyl Trimethylammonium Bromide and Its Complex Systems

摘要

Foam performance of 3-dodecyloxy-2-hydroxypropyl trimethylammonium bromide (DOHTAB) has been determined in the presence of different relative amounts of polymer and sodium bromide. The experimental results show that the foaming ability of the mixed systems of DOHTAB/polymer and DOHTAB/sodium bromide is stronger than that of the surfactant solutions in the absence of polymer and sodium bromide. Both foaming efficiency and foam stability of the surfactant solutions are evidently enhanced with increasing relative amounts of polymer and sodium bromide. The foamability of the mixture of DOHTAB/NaBr is stronger than that of the mixed system of DOHTAB/PEG or DOHTAB/PVP when the percentage composition is the same, whereas the foam stability of the former is weaker than that of the latter. The foamability and foam stability of the DOHTAB/PEG system were both better than those of the mixed system of DOHTAB/PVP at the same concentration.