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Efficacy of precipitation in non-solvents for the recovery of pure polymers from solution

✍ Scribed by C.A. Barson; J.C. Bevington; B.J. Hunt

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
531 KB
Volume
32
Category
Article
ISSN
0014-3057

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✦ Synopsis

AWract-Tests

have been performed using solutions of poly(methy1 methacrylate) with methanol, hexane and diethyl ether as precipitants; they involved size exclusion chromatography, the use of polymer with V-labelled end-groups and the use of "C-labelled benzoyl peroxide as a contaminant in the polymer. Methanol is the most satisfactory of the precipitants for the removal of the contaminant, but hexane leads to the best recovery of those polymer molecules which are comparatively small. Similar studies with polystyrene showed that methanol is preferable to hexane not only for the removal of the contaminant but also for recovery of small polymer molecules.

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