A Fourier transform Raman spectroscopy study of water sorption by poly(vinyl alcohol)

Publication Type:
Journal Article
Citation:
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 1997, 53 (13), pp. 2275 - 2278
Issue Date:
1997-01-01
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The Fourier transform (FT) Raman spectrum of poly(vinyl alcohol) (PVA1) is reported. The spectra of PVA1 exposed to different aqueous environments are also reported. The changes to the FT Raman spectrum of PVA1 in the presence of water provide evidence of several forms of water in the polymer. For PVA1 exposed to an environment of 75% relative humidity, it is postulated that water molecules disrupt the inter-chain hydrogen bonding which exists in the polymer and produce an augmented hydrogen bonding. For the case of exposure to a 100% relative humidity environment, evidence is provided for the existence of liquid-like water clustered between the crystallites of PVA1. © 1997 Elsevier Science B.V.
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