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Study of cryostructuration of polymer systems. XI. The formation of PVA cryogels by freezing–thawing the polymer aqueous solutions containing additives of some polyols

✍ Scribed by V. I. Lozinsky; E. V. Solodova; A. L. Zubov; I. A. Simenel


Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
573 KB
Volume
58
Category
Article
ISSN
0021-8995

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Poly(vinyl alcohol) (PVA) cryogels, which are formed as a result of freezethaw treatment of concentrated solutions of the polymer, were studied in respect to the amount of gel and sol fractions in these heterogeneous macroporous gel materials depending on the conditions of the thawing step of simila

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Freeze-thaw treatment of low-concentrated (ϽC\*) aqueous solutions of poly(vinyl alcohol) (PVA) results in the formation of a cryoprecipitate fraction. It is shown that the efficiency of such a process (the yield of PVA cryoprecipitation) depends on the initial polymer concentration in the solution