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Defect-free ultrahigh flux asymmetric membranes

Patent ·
OSTI ID:867276
 [1];  [1]
  1. Austin, TX
+ Show Author Affiliations
Defect-free, ultrahigh flux integrally-skinned asymmetric membranes having extremely thin surface layers (<0.2 .mu.m) comprised of glassy polymers are disclosed. The membranes are formed by casting an appropriate drope followed by forced convective evaporation of solvent to obtain a dry phase separated asymmetrical structure. The structure is then washed in a precipitation liquid and dried.
Research Organization:
University of Texas
DOE Contract Number:
FG05-86ER13507
Assignee:
Board Regents University of Texas System (Austin, TX)
Patent Number(s):
US 4902422
OSTI ID:
867276
Country of Publication:
United States
Language:
English

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Related Subjects

/210/96/264/
appropriate
asymmetric
asymmetric membranes
asymmetrical
casting
comprised
convective
defect-free
disclosed
dried
drope
dry
dry phase
evaporation
extremely
flux
followed
forced
formed
glassy
integrally-skinned
layers
liquid
membranes
obtain
phase
phase separate
phase separated
polymers
precipitation
separated
solvent
structure
surface
surface layer
surface layers
ultrahigh
ultrahigh flux
washed