Macromolecules

38, No.20, 4th Oct.2005, p.8316-26

ORIGINAL PENTAFLUOROSULPHANYL- CONTAINING FLUORINATED COPOLYMERS BASED ON VINYLIDENE FLUORIDE

Kostov G; Ameduri B; Sergeeva T; Dolbier W R; Winter R; Gard G L

Montpellier,Ecole Nationale Superieure de Chimie; Florida,University; Portland State University

The radical co- and terpolymerisation of fluorinated monomers bearing a pentafluorosulphanyl group with vinylidene fluoride (VDF) and hexafluoropropene (HFP) was studied. The pentafluorosulphanyl-bearing monomers did not homopolymerise under radical initiation but they did copolymerise and terpolymerise with VDF (and with VDF and HFP) in solution in the presence of radical initiators to form copolymers with pentafluorosulphanyl side groups. The degree of fluorine substitution on the ethylenic unit of the pentafluorosulphanyl monomers affected their reactivity, their relative incorporation in the copolymers and the molar masses of the resulting terpolymers. The higher the degree of fluorine substitution in the monomer, the higher the molecular weight and also, the greater the yield of the reaction. The yield also increased with increasing amount of initiator. The thermal stabilities and glass transition temperatures of the polymers were investigated. 50 refs.

EUROPEAN COMMUNITY; EUROPEAN UNION; FRANCE; USA; WESTERN EUROPE

Accession no.956210