Free Radical Copolymerization of 2,2,2-Trifluoroethyl a-Fluoroacrylate and tert-Butyl a-Trifluoromethylacrylate: Thermal and Optical Properties of the Copolymers - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Journal of Polymer Science Part A: Polymer Chemistry Année : 2008

Free Radical Copolymerization of 2,2,2-Trifluoroethyl a-Fluoroacrylate and tert-Butyl a-Trifluoromethylacrylate: Thermal and Optical Properties of the Copolymers

Résumé

The radical copolymerization of 2,2,2-trifluoroethyl a-fluoroacrylate (FATRIFE) with tert-butyl a-trifluoromethylacrylate (MAF-TBE) initiated by tertbutyl 2,2-dimethylperoxypropanoate was investigated in acetonitrile solution. A series of poly(FATRIFE-co-MAF-TBE) copolymers were synthesized with MAF-TBE compositions, determined by 19F NMR, ranging from 12 to 44 mol %. MAF-TBE incorporation was less than 50 mol % as this monomer underwent no radical homopolymerization. The obtained copolymers exhibited number-average molecular weights and polydispersity indexes ranging from 1.5 3 104 to 9.6 3 104 g/mol and from 1.5 to 3.1, respectively. The reactivity ratios were determined by the Kelen-Tu¨ dos method (rFATRIFE ¼ 1.71 6 0.01 and rMAF-TBE ¼ 0 at 74 8C) leading to random copolymers and alternating copolymers when the MAF-TBE molar ratio in copolymer is close to 50 mol %. Thermal and optical properties of the resulting polymers were examined. Glass transition temperatures of copolymers were varying from 89 to 108 8C. Modifying the compositions of these copolymers allowed a precise control over the refractive index measured at 633, 1320, and 1550 nm
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Dates et versions

hal-00353669 , version 1 (16-01-2009)

Identifiants

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Jean-Marc Cracowski, V. Montembault, Dominique Bosc, Bruno Ameduri, Isabelle Hardy, et al.. Free Radical Copolymerization of 2,2,2-Trifluoroethyl a-Fluoroacrylate and tert-Butyl a-Trifluoromethylacrylate: Thermal and Optical Properties of the Copolymers. Journal of Polymer Science Part A: Polymer Chemistry, 2008, 46, pp.4383-4391. ⟨10.1002/pola.22761⟩. ⟨hal-00353669⟩
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