【摘要】 研究了氟化钾催化下全氟环氧丙烷的自聚以及与全氟戊（或己）二酰氟的双官能团阴离子聚合。发现在常压力下氟化钾催化全氟环氧丙烷自聚的活性比文献报道的氟化铯催化活性小得多,但氟化钾催化全氟环氧丙烷和全氟戊（或己）二酰氟的双官能团聚合活性却比催化全氟环氧丙烷自聚的活性大。产物分离时两层中间的乳化层有催化作用,其结构可能为K^+-OCF₂R_fCF₂O^-K⁺,它还使全氟环氧丙烷在与全氟戊（或己）二酰氟的双官能团聚合中的自聚活性提高,类似于文献关于R_fO^-C_s⁺是活性催化剂的报道。对此催化作用提出解释。更多还原

【Abstract】 Anionic monofunctional polymerization and difunctional Polymerization of HFPO with perfluorinated acyl fluoride in presence of potassium fluoride have been studied. We found that under ordinary pressure the activity of monofunctional polymerization of HPPO in presence of potassium fluoride is much smaller than that in presence of cesium fluoride reported in the literature, and in the presence of potassium fluoride the activity of difunctional polymerization of HFPO is larger than that of mono-functional polymerization. We also found that the emulsified layer formed at the end of the polymerization shows catalytic activity, it may has the composition of K+- OCF2RtCF2-O-K+. It catalyses the monofunctional polymerization of HFPO during the difunctional polymerization. A mechanism is suggested to explain this catalytic phenomenon.更多还原