Institut Charles Gerhardt, CNRS, ENSCM, University of Montpellier, 34095 Montpellier, France.
Molecules. 2023 Jun 7;28(12):4618. doi: 10.3390/molecules28124618.
The copolymerization and terpolymerization of 1,1,3,3,3-pentafluoropropene (PFP) with various combinations of fluorinated and hydrogenated comonomers were investigated. The chosen fluoromonomers were vinylidene fluoride (VDF), 3,3,3-trifluoropropene (TFP), hexafluoropropene (HFP), perfluoromethylvinyl ether (PMVE), chlorotrifluoroethylene (CTFE) and -butyl-2-trifluoromethacrylate (MAF-TBE), while the hydrocarbon comonomers were vinylene carbonate (VCA), ethyl vinyl ether (EVE) and 3-isopropenyl-α,α-dimethylbenzyl isocyanate (m-TMI). Copolymers of PFP with non-homopolymerizable monomers (HFP, PMVE and MAF-TBE) led to quite low yields, while the introduction of VDF enabled the synthesis of poly(PFP--VDF--M) terpolymers with improved yields. PFP does not homopolymerize and delays the copolymerizations. All polymers were either amorphous fluoroelastomers or fluorothermoplastics with glass transition temperatures ranging from -56 °C to +59 °C, and they exhibited good thermal stability in air.
研究了 1,1,3,3,3-五氟丙烯（PFP）与各种氟化和氢化单体的共聚和三元共聚。选择的氟单体为偏氟乙烯（VDF）、三氟丙烯（TFP）、六氟丙烯（HFP）、全氟甲基乙烯基醚（PMVE）、氯三氟乙烯（CTFE）和-丁基-2-三氟甲基丙烯酸酯（MAF-TBE），而烃类单体为乙烯基碳酸酯（VCA）、乙基乙烯基醚（EVE）和 3-异丙烯基-α,α-二甲基苄基异氰酸酯（m-TMI）。PFP 与非均聚物单体（HFP、PMVE 和 MAF-TBE）共聚导致产率相当低，而 VDF 的引入则能够合成产率得到改善的聚（PFP-VDF-M）三元共聚物。PFP 不能均聚并且会延迟共聚反应。所有聚合物均为无定形氟弹性体或氟热塑性塑料，玻璃化转变温度范围为-56°C 至+59°C，在空气中具有良好的热稳定性。
