Solubility of poly(vinyl alcohol) (PVA) in water prevents the preparation of various derivatives through homogeneous techniques as most of the derivatives thus formed are insoluble in aqueous medium. There are a number of solvents that can swell PVA under hot conditions but cannot dissolve PVA. In the present study, N,N-dimethyl acetamide (DMAc) has been identified as solvent in which PVA can be dissolved in the presence of an equimolar amount of lithium chloride (LiCl). 1H nuclear magnetic resonance (1H-NMR), 13C-NMR, infrared (IR), and X-ray diffraction (XRD) studies have been carried out to characterize the regenerated poly(vinyl alcohol) (RPVA). DMAc-LiCl is found to be a true solvent system for dissolution of PVA. An attempt has also been made to prepare poly(vinyl acetate) from this solution of PVA by a homogeneous technique.
CITATION STYLE
Tosh, B., Saikia, C. N., & Dass, N. N. (1999). Development of a nonaqueous solvent system for poly(vinyl alcohol) and its characterization. Journal of Applied Polymer Science, 74(3), 663–669. https://doi.org/10.1002/(SICI)1097-4628(19991017)74:3<663::AID-APP20>3.0.CO;2-B
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