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Osmotic Pressures of Aqueous Polyvinylpyrrolidone Solutions by L. C. Cerny; T. E. Helminiak; J. F. Meier is a Materials Science article available to read on EtoBox.

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## Abstract The osmotic pressures of six well‐fractionated samples of polyvinylpyrrolidone were measured in aqueous solution in a Lucite‐block type osmometer. The molecular weights and interaction parameters were determined by employing the theory proposed by Maron for osmotic pressure. It was shown that for all of the fractions, a linear relation existed for ψ and __y__ as predicted by the theory. This new method for expressing osmotic pressure data is compared with the more commonly used expression: It was found that the molecular weights and T~2~ are in satisfactory agreement. However, the value of__g__ was not a constant equal to 0.25, but varied with the molecular weight. The expression for the osmotic pressure given by Maron's theory appears to be an accurate and rapid method of converting osmometric data to molecular weights.

Who reads Osmotic Pressures of Aqueous Polyvinylpyrrolidone Solutions?

Author

L. C. Cerny; T. E. Helminiak; J. F. Meier

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); Wiley (ISSN 0022-3832)

Published

1960

Language

EN

Field

Materials Science (Physical Sciences)