aInstitut Charles Sadron (CRM-EAHP), Université L. Pasteur, 6 rue Boussingault, 67083 Strasbourg Cedex, France
Received 7 November 1989;
revised 22 February 1990;
accepted 27 April 1990.
Available online 16 April 2003.
Abstract
Dissolution in a range of solvents reveals two kinds of behaviour of poly(vinylidene fluoride) (PVDF): readily soluble samples (mostly suspension-polymerized) and partly gel-forming samples (mostly emulsion-polymerized). From molecular characterization of a number of industrial and laboratory samples of the first kind in solution in different solvents by light scattering, intrinsic viscosity and size exclusion chromatography, we derive unperturbed dimensions and χ parameters. Our results differ from previous measurements where light-scattering experiments were carried out in solvents with very low and/or on less-soluble (second-kind) PVDF, where microgel formation cannot be avoided.