含氟嵌段共聚物离聚体的合成表征及其性能研究

SYNTHESIS AND CHARACTERIZATION OF FLUORINE-CONTAINING BLOCK COPOLYMER IONOMERS AND THEIR PROPERTIES

Fluorine-containing block copolymer ionomers were prepared by atom transfer radical polymerization (ATRP) of 2-[(perfluorononenyl)oxy]ethyl methacrylate (FNEMA) using bromine-endcapped poly(styrene)(PSt- Br) as macroinitiators,followed by partial sulfonation of the styrene blocks.The formation of the block copolymers before sulfonation was confirmed with gel permeation chromatography (GPC) and 1H-NMR.The sulfonation products were characterized by FT-IR and elemental analysis.Furthermore,their solution behavior and wettability were examined and comparied with those of the parent copolymers.The results show that the ionomers,especially the metal salt ionomers exhibit higher viscosity than that of the parent block copolymers.Although the polar groups-sulfonated groups were introduced to the copolymer,the film of the ionomer kept high hydrophobic ability.

Fluorine-containing block copolymer ionomers were prepared by atom transfer radical polymerization (ATRP) of 2-[(perfluorononenyl)oxy] ethyl methacrylate (FNEMA) using bromine-endcapped poly (styrene) (PStBr) as macroinitiators, followed by partial sulfonation of the styrene blocks. The formation of the block copolymers before sulfonation was confirmed with gel permeation chromatography (GPC) and H-1-NMR. The sulfonation products were characterized by Fr-IR and elemental analysis. Furthermore, their solution behavior and wettability were examined and comparied with those of the parent copolymers. The results show that the ionomers, especially the metal salt ionomers exhibit higher viscosity than that of the parent block copolymers. Although the polar groups-sulfonated groups were introduced to the copolymer, the film of the ionomer kept high hydrophobic ability.