Abstract: A method of forming a polymer film having controlled physical and chemical characteristics, wherein a plume of nebulized droplets of a polymer or polymer precursor is directed toward a substrate from a converging/diverging nozzle having a throat at which the polymer or a precursor thereof is introduced and an exit from which the nebulized droplets of the polymer or precursor thereof leave entrained in a carrier gas. Relative movement between the nozzle and the substrate is provided to form a polymer film. Physical and chemical characteristics can be controlled by varying the deposition parameters and the gas and liquid chemistries. Semipermeable membranes of polyphosphazene films are disclosed, as are a variety of other polymer systems, both porous and non-porous.
Type:
Grant
Filed:
August 21, 1991
Date of Patent:
October 12, 1993
Assignee:
FG&G Idaho Inc.
Inventors:
Kevin M. McHugh, Lloyd D. Watson, Richard E. McAtee, Scott A. Ploger