Methods of fractionating polymers by ultrafiltration | Zendy

Baker R. W. | Zendy

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Methods of fractionating polymers by ultrafiltration

Author(s) -

Baker R. W.

Publication year - 1969

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1969.070130210

Subject(s) - ultrafiltration (renal) , polyvinylpyrrolidone , membrane , chromatography , polymer , materials science , chemistry , chemical engineering , polymer chemistry , composite material , engineering , biochemistry

Polyvinylpyrrolidone and dextran polysaccharides have been fractionated by ultrafiltration by using newly developed membranes with sharp molecular weight cutoffs. Three different experimental techniques were employed: (a) batch ultrafiltration by using progressively more retentive membranes; (b) continuous ultrafiltration by using several similar membranes in series; (c) variable pressure ultrafiltration by using a single membrane and varying the applied pressure. Ultrafiltration is shown to be a technique of preparative fraction having the advantages of simplicity, speed, and economy.

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