Visualization of the film was conducted at room temperatureusing a NanoScope III, an atomic force microscope from DigitalInstruments (Santa Barbara, CA) equipped with a J scanner with a maximum scan area of 30 m. Images were recorded in a tap-ping mode using silicon tips (Nanosensors, Germany). To monitor the change in morphology of the latex film with time, the surface mean roughness, Ra, of the film surface was followed with time from the nascent stage.