Influence of Plasticiser Functionality on Surfactant Segregation in Poly-Vinyl Alcohol Films and Links to Matrix Free Volume Properties
Plasticised PVA film is widely used in packaging for detergents (unit dose) and foods. We wish to understand the interplay between plasticisers, polymers (PVA) and materials contacting the films such as surfactants. This will provide data to test new models to guide the design of future industrial formulations. We propose to build on our original studies on glycerol plasticised films with ethylene glycol and propylene glycol, enabling parameterisation of the influences of molecular weight, surface tension and hydrophobicity. Specular NR will be used to quantify the surface segregation of each plasticiser in PVA film with and without the influence of a non-ionic surfactant. The influence of these new plasticisers on surfactant segregation is a non-trivial problem. By studying this process for these systems we anticipate being able to parameterise and predict molecular migration in complex polymer films for many additional types of formulation.
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Richard L Thompson; FONG Rebecca; GUTFREUND Philipp and SQUILLACE Ophelie. (2018). Influence of Plasticiser Functionality on Surfactant Segregation in Poly-Vinyl Alcohol Films and Links to Matrix Free Volume Properties. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-1875
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