Anodic electrodeposition of a commercial asphaltic emulsion modified with p
olystyrene emulsion and oleate of potassium was studied. The process was ca
rried out at a constant voltage in a continuously agitated bath, employing
galvanized steel electrodes maintained at a fixed distance of separation. C
omposition and operating conditions were determined to obtain uniform textu
re and compact films with a thickness usable by industry. It was found that
the system obeyed Ohm's and Faraday's laws and presented film-dissolution
behavior. In addition, a kinetic study was performed in which a mathematica
l model was proposed to predict film growth with time. (C) 1999 John Wiley
& Sons, Inc.