Synthesis and Characterization of Hydroxyl-terminated Block Fluorinated Copolyether(FPO-PTHF-FPO)
Synthesis and Characterization of Hydroxyl-terminated Block Fluorinated Copolyether(FPO-PTHF-FPO)
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DOI：
10.1007/s11595-022-2529-8
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发表时间：
2022-04
期刊：
影响因子：
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通讯作者：
Y. Liu;Huihui Liu;Tao Zhang;Qing Zhu;Houbin Li
中科院分区：
文献类型：
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作者：
Y. Liu;Huihui Liu;Tao Zhang;Qing Zhu;Houbin Li
We introduced fluorine into hydroxyl-terminated block copolyether so as to prepare polyurethane adhesive with better performance. Fluorine-containing epoxy compounds (FO) was synthesized by one-step method from 2,2,3,3-tetrafluoro-1-propanol (TFP) and epichlorohydrin (ECH). Then, a novel hydroxyl-terminated block fluorinated copolyether (FPO-PTHF-FPO) was prepared by cationic ring-opening polymerization of fluorinated epoxy compound (FO) with polytetrahydrofuran (PTHF) as the macromolecular initiator and boron trifluoride diethyl ether (BF3·OEt2) as the catalyst. The structure and properties of hydroxyl-terminated block fluorinated copolyether were characterized by FTIR,1HNMR, GPC, DSC, TGA, and viscosity-temperature curve analysis. In comparison with polytetrahydrofuran (PTHF), hydroxyl-terminated block fluorinated copolyether (FPO-PTHF-FPO) has lower viscosity and only one lower glass transition temperature (−66.6 °C) on DSC curve. In addition, hydroxyl-terminated block fluorinated copolyether (FPO-PTHF-FPO) begins to decompose at 187.2 °C and is completely decomposed until 431.6 °C, which indicates that it has a good thermal stability.
