Eur. Phys. J. E 8, 283-288 (2002)
DOI: 10.1140/epje/i2002-10014-4
Thermophysical properties of fluorinated acrylate homopolymers: Mixing and phase separation
F. Roussel1, S. Saidi2, F. Guittard2 and S. Geribaldi21 Laboratoire de Thermophysique de la Matière Condensée, Equipe de l'UPRESA CNRS 8024, Université du Littoral-Côte d'Opale, MREID, 59140 Dunkerque, France
2 Laboratoire de Chimie des Matériaux Organiques et Métalliques, Université de Nice-Sofia Antipolis, Parc Valrose, 06108 Nice cedex 2, France
(Received 30 January 2002)
Abstract
The thermophysical properties of fluorinated acrylate homopolymers
are investigated by differential scanning calorimetry (DSC) and optical
microscopy and discussed in terms of relative lengths of the fluorinated
chain and the hydrocarbon spacer between the acrylate moiety and the
fluorinated chain. These compounds exhibit an intrinsic microphase-separation
(Isotropic+Isotropic morphology) occurring between the fluorinated chains and
the acrylate polymer backbone. It is shown that the enthalpy of mixing is a
function of the length of the lateral fluorocarbon chains. The thermophysical
behaviour of these materials may be regarded as demixed systems exhibiting an
Upper Critical Solution Temperature. The photopolymerization process of one of
the monomer is studied by isothermal photocalorimetry. High acrylate
double-bond conversion and fast curing rates were obtained thus demonstrating
the promising use of these materials for coating and film processing
applications using UV-curing techniques.
61.41.+e - Polymers, elastomers, and plastics.
82.35.-x - Polymers: properties; reactions; polymerization.
64.70.-p - Specific phase transitions.
64.75.+g - Solubility, segregation, and mixing; phase separation.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2002
