A Study on Stability of AKD-Emulsion

AKD 에멀션의 안정성 평가

Stability deterioration of AKD emulsion was studied with respect of the physical change of emulsion particles and the chemical change of AKD itself. Four kinds of commercial emulsions were kept at RT, 40, 50, and $60^{\circ}C$ water bath, respectively. Viscosity, particle size distribution, and solid contents of the emulsions were measured with storage time. At the same time, by performing NMR and IR spectroscopy analysis of the solvent-extracted AKD from the emulsions, the qualitative and quantitative information about the deformation of the AKD itself were obtained. AKD was gradually hydrolyzed to become dialkylketone and higher storage temperature accelerated destabilization of the AKD emulsions.