Record Display for the EPA National Library Catalog


Main Title Research and Development of New Polymer Systems for Reverse Osmosis Membranes.
Author Saltonstall, Jr, C. W. ; Higle, W. S. ;
CORP Author Aerojet-General Corp., El Monte, Calif. Environmental Systems Div.
Year Published 1968
Report Number DI-14-01-0001-1093; PR-360;
Stock Number PB-206 019
Additional Subjects ( Desalting ; Osmosis) ; ( Osmosis ; Membranes) ; Polycarbonate resins ; Performance evaluation ; Polymeric films ; Flux(Rate) ; Acrylonitrile copolymers ; Collagens ; Cellulosic resins ; Ethyl cellulose ; Polyacrylamides ; Mechanical properties ; Fabrication ; Casting ; Polymerization ; Reverse osmosis desalination
Library Call Number Additional Info Location Last
NTIS  PB-206 019 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 71p
The object of the research was to develope new reverse osmosis membranes superior to cellulose acetate. Poly (vinylene carbonate) which was polymerized from the purified monomer as required was evaluated in the form of thin or ultrathin films. Knife-cast films showed increasing flux and decreasing salt retention with time and eventual loss of useful osmotic properties. Copolymers of vinylene carbonate were prepared and evaluated. Attempts to prepare a copolymer from vinylene carbonate and N-vinyl-2-pyrrolidone comonomers in bulk were not successful. Acetone soluble nitrile polymers and copolymers prepared from methacrylonitrile were also investigated as were films of a microcrystalline form of collagen. The incorporation of 10% poly (diacetone acrylamide) into ethyl cellulose resulted in films with salt retentions of 98.3 to 99.5%.