Siloxane-grafted membranes

Patent · Sun Jan 01 00:00:00 EST 1989

OSTI ID:867159

Friesen, Dwayne T ^[1]; Obligin, Alan S ^[2]

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1. Bend, OR
2. Catonville, MD

Composite cellulosic semipermeable membranes are disclosed which are the covalently bonded reaction product of an asymmetric cellulosic semipermeable membrane and a polysiloxane containing reactive functional groups. The two reactants chemically bond by ether, ester, amide or acrylate linkages to form a siloxane-grafted cellulosic membrane having superior selectivity and flux stability. Selectivity may be enhanced by wetting the surface with a swelling agent such as water.

• Research Organization: Bend Research Inc
• DOE Contract Number: AC03-84ER80159
• Assignee: Bend Research, Inc. (Bend, OR)
• Patent Number(s): US 4877528
• OSTI ID: 867159
• Country of Publication: United States
• Language: English

Related Subjects

siloxane-grafted
membranes
composite
cellulosic
semipermeable
disclosed
covalently
bonded
reaction
product
asymmetric
membrane
polysiloxane
containing
reactive
functional
reactants
chemically
bond
ester
amide
acrylate
linkages
form
superior
selectivity
flux
stability
enhanced
wetting
surface
swelling
agent
water
semipermeable membranes
semipermeable membrane
permeable membrane
reaction product
covalently bonded
chemically bond
cellulosic semipermeable
containing reactive
reactive functional
permeable membranes
asymmetric cellulosic
/210/95/96/