A Study of Bonding Cellulose Acetate to Polyarylsulfone,

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Abstract:

The objective of this study was to develop a method by which ultrathin films 500 to 1500 angstroms in thickness of cellulose acetate could be bonded to microporous supports of polyarylsulfone. In addition to the bonding requirements, the method developed could not adversely affect the salt NaCl rejecting and flow characteristics of the cellulose acetate-polysulfone composite. A successful method was found to be the application of a dilute solution 1.5 percent by weight of Resyn 26-2404 to the polysulfone before casting the cellulose acetate membrane. A TYPICAL COMPOSITE WITH A SPRAYED APPLICATION OF Resyn 26-2404 had a salt rejection and water flux before dry cycle defined as heating for 24 hours at 110 F of 97 percent and 8.8 galsq ftday respectively. After dry cycle, the average salt rejection was 95 percent and the water flux remained at approximately 8.8 galsq ftday. Additional drying cycles were found to degrade the composite membranes. Author-PL

Author(s):
Cross, Paul William
Author Organization(s):
ARMY MOBILITY EQUIPMENT RESEARCH AND DEVELOPMENT COMMAND FORT BELVOIR VA
Pagination:
0027

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
USAMERDC-2054
 Subject Terms
Joint Capability Areas:
JCA_5.3_Planning; JCA_5_Command and Control
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*DESALINATION), *BONDING), (*WATER, (*CELLULOSE ACETATES, OSMOSIS, MEMBRANES, COMPOSITE MATERIALS, ORGANIC SULFUR COMPOUNDS, THICKNESS, ADHESIVES, TEST EQUIPMENT, ORGANIC SOLVENTS, CROSSLINKING(CHEMISTRY), BONDED JOINTS
Field(s)/Group(s):
Laminates and Composite Materials, Plastics, Couplers, Fasteners and Joints
Keyword(s):
POLYSULFONE COMPOSITES, POLYSULFONE PLASTICS, RESYN 26 2404, *SULFONES
Report Date:
1973 Feb 01