Critical Coalescence Concetration (CCC) as a parameter for evaluation of selected quaternary ammonium compounds
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Wroclaw University of Technology, Department of Geoengineering, Mining and Geology
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Danuta Szyszka   

Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland, Department of Geoengineering, Mining and Geology, ul. Na Grobli 15, 50-421 Wroclaw, Poland
Mining Science 2013;20:101-113
The objective of this paper was to determine the Critical Coalescence Concentration (CCC) of surfactants such as N(dodecyloxycarboxymethyl) N,N,N-(trimethylammonium) bromide (DMGM- 12), N-[2-(dodecyoxycarboxy)ethyl] N,N,N-(trimethylammonium) bromide (DMALM-12) and N-[3- (dodecanoyloxycarboxy)prophyl] N,N,N-(trimethylammonium) bromide (DMPM-11). The surfactants used represent quaternary ammonium compounds containing a hydrophobic moiety with an ester group (commonly known as “esterquats”). The CCC value was determined by analysis of the relationship between concentration of surfactant and average air bubble diameter. The values of the critical coalescence concentration (CCC) were estimated using a graphical method.
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