Siloxane-grafted membranes

Friesen, Dwayne T; Obligin, Alan S

Title: Siloxane-grafted membranes

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Abstract

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.

Inventors:

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

Bend, OR
Catonville, MD

Issue Date:: 1989-01-01

Research Org.:: Bend Research Inc

OSTI Identifier:: 867159

Patent Number(s):: 4877528

Assignee:: Bend Research, Inc. (Bend, OR)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B01D2323/38 - Graft polymerization
B01D67/0093 - {Chemical modification}

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DOE Contract Number:: AC03-84ER80159

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 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/

Citation Formats


                    Friesen, Dwayne T, and Obligin, Alan S. Siloxane-grafted membranes.  United States: N. p., 1989. 
        Web.

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                    Friesen, Dwayne T, & Obligin, Alan S. Siloxane-grafted membranes.  United States.

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                    Friesen, Dwayne T, and Obligin, Alan S. Sun .  
        "Siloxane-grafted membranes".  United States.  https://www.osti.gov/servlets/purl/867159.

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@article{osti_867159,

  title        = {Siloxane-grafted membranes},

  author       = {Friesen, Dwayne T and Obligin, Alan S},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1989},

  month        = {1}

}

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