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IJC-A Vol.47A [2008] >
IJC-A Vol.47A(07) [July 2008] >


Title: Molecular interactions of polyvinylpyrrolidone and cellulose acetate butyrate solutions in dimethylformamide
Authors: Selvakumar, M
Bhat, D Krishna
Renganathan, N G
Issue Date: Jul-2008
Publisher: CSIR
Abstract: The ultrasonic velocity, density, and viscosities of polyvinylpyrrolidone (PVP) and cellulose acetate butyrate (CAB) solutions in dimethylformamide (DMF) have been measured in the temperature range, 303K-323 K. Using these data, free energy of mixing, solvation number and different polymer-solvent interaction parameters for the solution systems have been calculated to know the presence of molecular interactions in the system. The trends in the variation of the solution property parameters indicate the existence of positive molecular interactions between the polymer and the solvent in solutions. The results also show the presence of higher degree of interaction between PVP and DMF in solution compared to CAB and DMF.
Page(s): 1014-1019
ISSN: 0376-4710
Source:IJC-A Vol.47A(07) [July 2008]

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