Copolymerization of Vinylidene Fluoride and Acrylic Acid in Supercritical Carbon Dioxide

Risultato della ricerca: Articlepeer review

13 Citazioni (Scopus)

Abstract

The free-radical copolymerization of vinylidene fluoride (VDF) and acrylic acid (AA) was carried out in supercriticalcarbon dioxide using both precipitation and dispersion techniques in the presence of an ammonium carboxylate perfluoropolyethercompound. Formation of a copolymer was confirmed by variable contact time CP MAS NMR spectroscopy. Macromolecularmatrices were significantly enriched in AA with respect to the initial feed composition and we found that the nonfluorinatedmonomer has a much higher reactivity ratio with respect to VDF.The cumulative concentration, crystallinity, and water affinity of the synthesized copolymers could be modified changing the initial feed composition, the density of the polymerization mixture, the specific interfacial area of the polymer phase, and the polymerization time. The solubility of the macromolecular product inwater was greatly affected by its composition.
Lingua originaleEnglish
pagine (da-a)109-121
Numero di pagine13
RivistaJOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY
Volume48
Stato di pubblicazionePublished - 2010

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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