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Cobalt-Mediated Radical Copolymerization of Vinylidene Fluoride and 2,3,3,3-Trifluoroprop-1-ene
| Content Provider | MDPI |
|---|---|
| Author | Falireas, Panagiotis G. Ameduri, Bruno |
| Copyright Year | 2021 |
| Description | New copolymers based on vinylidene fluoride (VDF) and 2,3,3,3-tetrafluoroprop-1-ene (1234yf) were synthesized by organometallic-mediated radical copolymerization (OMRcP) using the combination of bis(tert-butylcyclohexyl) peroxydicarbonate initiator and bis(acetylacetonato)cobalt(II), $(Co(acac)_{2}$) as a controlling agent. Kinetics studies of the copolymerization of the fluoroalkenes copolymers were monitored by GPC and$ ^{19}$F NMR with molar masses up to 12,200 g/mol and dispersities (Đ) ranging from 1.33 to 1.47. Such an OMRcP behaves as a controlled copolymerization, evidenced by the molar mass of the resulting copolymer-monomer conversion linear relationship. The reactivity ratios, $r_{i}$, of both comonomers were determined by using the Fineman-Ross and Kelen-Tüdos fitting model leading to $r_{VDF}$ = 0.384 ± 0.013 and $r_{1234yf}$ = 2.147 ± 0.129 at 60 °C, showing that a lower reactivity of VDF integrated in the copolymer to a greater extent leads to the production of gradient or pseudo-diblock copolymers. In addition, the Q (0.03) and e (0.06 and 0.94) parameters were assessed, as well as the dyad statistic distributions and mean square sequence lengths of PVDF and P1234yf. |
| Starting Page | 2676 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym13162676 |
| Journal | Polymers |
| Issue Number | 16 |
| Volume Number | 13 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-08-11 |
| Access Restriction | Open |
| Subject Keyword | Polymers Polymer Science 3,3,3-tetrafluoroprop-1-ene Cobalt Acetylacetonate Controlled Radical Polymerization Kinetics of Copolymerization Organometallic Radical Copolymerization Rdrp Reactivity Ratios Vinylidene Fluoride |
| Content Type | Text |
| Resource Type | Article |
