Characterization of Backbone Structures in Poly(vinylidene fluoride-co-hexafluoropropylene) Copolymers by Multidimensional 19F NMR Spectroscopy
| Autor: | Elizabeth Forrester Mccord, Peter A. Fox, Eric B. Twum, Peter L. Rinaldi, Donald F. Lyons |
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| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Organic Chemistry Sequence (biology) Polymer Inorganic Chemistry chemistry.chemical_compound Monomer chemistry Polymerization Polymer chemistry Materials Chemistry Copolymer Fluoropolymer Physical chemistry Hexafluoropropylene Dispersion (chemistry) |
| Zdroj: | Macromolecules. 46:4892-4908 |
| ISSN: | 1520-5835 0024-9297 |
| DOI: | 10.1021/ma400683w |
| Popis: | Advanced modern multidimensional solution NMR experiments have been used to deduce the sequence distribution in poly(VDF-co-HFP) copolymers. Assignment of 19F resonances from different monomer- and regio-sequences in poly(VDF-co-HFP) copolymer were identified. In addition to corroborating some assignments reported in earlier literature, this work provides assignments of some new resonances from the spectra of poly(VDF-co-HFP) copolymer, which resulted from better dispersion of the resonances. These assignments are used for the monomer sequence analyses of two polymers using first-order Markovian statistics, and the relative reactivities of the monomers during polymerization are discussed. The results from this study provide insight into the polymerization chemistry for this fluoropolymer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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