Cellulose acetate membranes for osmosedimentation: Performance and morphological dependence on preparation conditions

Suzana Pereira Nunes; Fernando Galembeck; Nilso Barelli

doi:10.1016/0032-3861(86)90308-3

Cellulose acetate membranes for osmosedimentation: Performance and morphological dependence on preparation conditions

Suzana Pereira Nunes^*, Fernando Galembeck, Nilso Barelli

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Osmosedimentation is a new membrane-assisted separation technique, based on the rapid approach to sedimentation equilibrium when macromolecular solutions are contained within dialysis cells, in contact with solvent via a permselective membrane. Cellulose acetate membranes, cast from ternary solvent (acetone, acetic acid, water) solutions are suitable for osmosedimentation of proteins at low (2000 rpm) centrifugation speeds. Solute retention is improved when acetone-rich casting solutions are used. These membranes were examined by electron and optical microscopy, showing considerable morphological changes in the membrane support layer as the casting solution composition is changed.

Original language	English (US)
Pages (from-to)	937-943
Number of pages	7
Journal	Polymer
Volume	27
Issue number	6
DOIs	https://doi.org/10.1016/0032-3861(86)90308-3
State	Published - Jun 1986
Externally published	Yes

Keywords

membrane morphology
osmosedimentation

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/0032-3861(86)90308-3

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title = "Cellulose acetate membranes for osmosedimentation: Performance and morphological dependence on preparation conditions",

abstract = "Osmosedimentation is a new membrane-assisted separation technique, based on the rapid approach to sedimentation equilibrium when macromolecular solutions are contained within dialysis cells, in contact with solvent via a permselective membrane. Cellulose acetate membranes, cast from ternary solvent (acetone, acetic acid, water) solutions are suitable for osmosedimentation of proteins at low (2000 rpm) centrifugation speeds. Solute retention is improved when acetone-rich casting solutions are used. These membranes were examined by electron and optical microscopy, showing considerable morphological changes in the membrane support layer as the casting solution composition is changed.",

keywords = "membrane morphology, osmosedimentation",

author = "Nunes, {Suzana Pereira} and Fernando Galembeck and Nilso Barelli",

year = "1986",

month = jun,

doi = "10.1016/0032-3861(86)90308-3",

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TY - JOUR

T1 - Cellulose acetate membranes for osmosedimentation

T2 - Performance and morphological dependence on preparation conditions

AU - Nunes, Suzana Pereira

AU - Galembeck, Fernando

AU - Barelli, Nilso

PY - 1986/6

Y1 - 1986/6

N2 - Osmosedimentation is a new membrane-assisted separation technique, based on the rapid approach to sedimentation equilibrium when macromolecular solutions are contained within dialysis cells, in contact with solvent via a permselective membrane. Cellulose acetate membranes, cast from ternary solvent (acetone, acetic acid, water) solutions are suitable for osmosedimentation of proteins at low (2000 rpm) centrifugation speeds. Solute retention is improved when acetone-rich casting solutions are used. These membranes were examined by electron and optical microscopy, showing considerable morphological changes in the membrane support layer as the casting solution composition is changed.

AB - Osmosedimentation is a new membrane-assisted separation technique, based on the rapid approach to sedimentation equilibrium when macromolecular solutions are contained within dialysis cells, in contact with solvent via a permselective membrane. Cellulose acetate membranes, cast from ternary solvent (acetone, acetic acid, water) solutions are suitable for osmosedimentation of proteins at low (2000 rpm) centrifugation speeds. Solute retention is improved when acetone-rich casting solutions are used. These membranes were examined by electron and optical microscopy, showing considerable morphological changes in the membrane support layer as the casting solution composition is changed.

KW - membrane morphology

KW - osmosedimentation

UR - http://www.scopus.com/inward/record.url?scp=0022736358&partnerID=8YFLogxK

U2 - 10.1016/0032-3861(86)90308-3

DO - 10.1016/0032-3861(86)90308-3

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JO - Polymer

JF - Polymer

IS - 6

ER -

Cellulose acetate membranes for osmosedimentation: Performance and morphological dependence on preparation conditions

Abstract

Keywords

ASJC Scopus subject areas

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