ISIS Neutron and Muon Source Data Journal

Determination of the interaction parameter between vinyl alcohol and vinyl acetate in PVAc

Abstract: Polyvinylalcohol, PVA, is an increasingly important industrial material used for water-soluble unit dose applications. Vinyl alcohol cannot be directly polymerised; therefore PVA is prepared by the hydrolysis of polymerised vinyl acetate, PVAc. For most applications the PVA is incompletely hydrolysed and the residual acetate groups while not inherently hydrophilic help to suppress crystallisation and render the copolymer more soluble. Remarkably, we can find no direct measure of the compatibility of PVAc and PVA in the literature, but this is important to understand in order to predict the solubility and interdiffusion behaviour of the material. We propose to use SANS to study well-defined blends of deuterium-labelled P-dVAc with PVAc of the same degree of polymerisation but somewhat different degrees of hydrolysis. These experiments will provide detail structural analysis of PVAc in the melt state as well as the interaction parameter between VA and VAc groups.

Local Contact: Dr Gregory Smith
Experimenter: Dr Richard Thompson
Experimenter: Dr Clare Mahon
Experimenter: Mr James Cresswell

DOI: 10.5286/ISIS.E.RB2310100

ISIS Experiment Number: RB2310100

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Gregory Smith et al; (2023): Determination of the interaction parameter between vinyl alcohol and vinyl acetate in PVAc, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2310100

Data is released under the CC-BY-4.0 license.