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Title: Gas separation membranes

Abstract

A dry, fabric supported, polymeric gas separation membrane, such as cellulose acetate, is prepared by casting a solution of the polymer onto a shrinkable fabric preferably formed of synthetic polymers such as polyester or polyamide filaments before washing, stretching or calendering (so called griege goods). The supported membrane is then subjected to gelling, annealing, and drying by solvent exchange. During the processing steps, both the fabric support and the membrane shrink a preselected, controlled amount which prevents curling, wrinkling or cracking of the membrane in flat form or when spirally wound into a gas separation element.

Inventors:
 [1]
  1. Long Beach, CA
Publication Date:
Research Org.:
Envirogenics Systems Co
OSTI Identifier:
863259
Patent Number(s):
US 4134742
Assignee:
Envirogenic Systems Company (El Monte, CA)
DOE Contract Number:  
EX-76-C-01-2000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
gas; separation; membranes; dry; fabric; supported; polymeric; membrane; cellulose; acetate; prepared; casting; solution; polymer; shrinkable; preferably; formed; synthetic; polymers; polyester; polyamide; filaments; washing; stretching; calendering; called; griege; subjected; gelling; annealing; drying; solvent; exchange; processing; steps; support; shrink; preselected; controlled; amount; prevents; curling; wrinkling; cracking; flat; form; spirally; wound; element; preferably formed; processing steps; gas separation; separation membrane; cellulose acetate; spirally wound; separation membranes; controlled amount; separation element; processing step; supported membrane; synthetic polymer; /95/96/210/264/

Citation Formats

Schell, William J. Gas separation membranes. United States: N. p., 1979. Web.
Schell, William J. Gas separation membranes. United States.
Schell, William J. Mon . "Gas separation membranes". United States. https://www.osti.gov/servlets/purl/863259.
@article{osti_863259,
title = {Gas separation membranes},
author = {Schell, William J},
abstractNote = {A dry, fabric supported, polymeric gas separation membrane, such as cellulose acetate, is prepared by casting a solution of the polymer onto a shrinkable fabric preferably formed of synthetic polymers such as polyester or polyamide filaments before washing, stretching or calendering (so called griege goods). The supported membrane is then subjected to gelling, annealing, and drying by solvent exchange. During the processing steps, both the fabric support and the membrane shrink a preselected, controlled amount which prevents curling, wrinkling or cracking of the membrane in flat form or when spirally wound into a gas separation element.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}

Patent:

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