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Title: Spray forming polymer membranes, coatings and films

A method is described for 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. 4 figures.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
5304065
Assignee:
EG and G Idaho Inc., Idaho Falls, ID (United States) PTO; EDB-94-046230
Patent Number(s):
US 5252212; A
Application Number:
PPN: US 7-748156
Contract Number:
AC07-76ID01570
Resource Relation:
Patent File Date: 21 Aug 1991
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MEMBRANES; FABRICATION; POLYMERS; SPRAY COATING; PROCESS CONTROL; SPRAYED COATINGS; COATINGS; CONTROL; DEPOSITION; SURFACE COATING; 360601* - Other Materials- Preparation & Manufacture