Influence of polymerization degree on the dynamic interfacial properties and foaming ability of ammonium polyphosphate (APP)-surfactant mixtures

Ammonium polyphosphate (APP) is an inorganic polymer and has been widely used as a flame retardant. Illustrating the interaction between APP and surfactants is significant for exploring the application of fire-fighting foam stabilized by APP/surfactant mixtures. In this work, we studied the influence of APP with different polymerization degrees on dynamic interfacial properties and foaming ability of the two oppositely charged surfactants. The...