Eur. Phys. J. E 8, 283-288 (2002)
Thermophysical properties of fluorinated acrylate homopolymers: Mixing and phase separationF. Roussel1, S. Saidi2, F. Guittard2 and S. Geribaldi2
1 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)
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