Abstract

Organo-inorganic composite materials based on films of polytetrafluoroethylene and tetrafluoroethylene–hexafluoropropylene copolymer, modified with vanadium- and phosphorus-containing functional groups, were synthesized. The modified fluoropolymer films, especially those modified with phosphorus-containing groups, exhibit increased hydrophilicity. A change in the energy characteristics of the modified films of polytetrafluoroethylene and tetrafluoroethylene–hexafluoropropylene copolymer, consisting in redistribution of the polar and dispersion constituents of the surface free energy, was revealed. Fluoropolymer samples with the two-component vanadium-phosphorus-containing system in which the phosphorus atoms are located on the surface exhibit the highest polar constituent of the surface energy due to the hydrolytic activity of phosphorus, enhanced by the synergistic effect of vanadium present in the two-component system. Changes in the fluoropolymer surface morphology after the modification were revealed, and the relationship was found between the energy characteristics and morphology of the modified polymer film surface. The electret materials based on modified fluoropolymer films exhibit enhanced charge stability. Films of polytetrafluoroethylene and tetrafluoroethylene–hexafluoropropylene copolymer with the single-component vanadium-containing system on the surface are the most stable electrets.

中文翻译：

---

基于含钒和含磷结构改性的含氟聚合物的驻极体材料

摘要

合成了基于聚四氟乙烯和四氟乙烯-六氟丙烯共聚物薄膜的有机-无机复合材料，并用含钒和磷的官能团改性。改性的含氟聚合物薄膜，尤其是用含磷基团改性的那些，表现出增加的亲水性。揭示了聚四氟乙烯和四氟乙烯-六氟丙烯共聚物改性薄膜的能量特性的变化，包括表面自由能的极性和分散成分的重新分布。由于磷的水解活性，具有磷原子位于表面的双组分含钒-磷系统的含氟聚合物样品表现出最高的表面能极性成分，通过存在于双组分系统中的钒的协同作用增强。揭示了改性后含氟聚合物表面形貌的变化，并发现了改性聚合物薄膜表面的能量特性与形貌之间的关系。基于改性含氟聚合物薄膜的驻极体材料表现出增强的电荷稳定性。表面具有单组分含钒体系的聚四氟乙烯和四氟乙烯-六氟丙烯共聚物薄膜是最稳定的驻极体。基于改性含氟聚合物薄膜的驻极体材料表现出增强的电荷稳定性。表面具有单组分含钒体系的聚四氟乙烯和四氟乙烯-六氟丙烯共聚物薄膜是最稳定的驻极体。基于改性含氟聚合物薄膜的驻极体材料表现出增强的电荷稳定性。表面具有单组分含钒体系的聚四氟乙烯和四氟乙烯-六氟丙烯共聚物薄膜是最稳定的驻极体。