Fe(acac)_3-Al(i-Bu)_3-α,α'-联吡啶催化环酸酐与环氧烷烃开环共聚

Ring-opening Copolymerization of Cycloanhydride with Cycloalkyl Oxide Catalyzed by Fe-Al-α,α'-Dipyridine

用Fe(acac)3-Al(i-Bu)3-α,α’-联吡啶(acac=乙酰丙酮)催化环酸酐(马来酸酐、邻苯二甲酸酐)与环氧烷烃(环氧丙烷、环氧氯丙烷、环氧环已烷及苯基环氧乙烷)进行开环交替共聚,并研究了Fe/Al、Fe/α,α’-联吡啶摩尔比、不同环酸酐及不同环氧烷烃对聚合的影响,以及环酸酐与环氧化物摩尔比改变对共聚合物交替度、分子量及分子量分布的影响.研究表明:催化剂对聚合反应具有较好的催化效果.

The copolymerization of cycloanhydride and cyctoalkyl oxide by Fe（acac）3-Al（i-Bu）3-α,α＇- Dipyridine and the component of the copolymers thus obtained are presented in this paper. All polymerizing reactions are carried out under nitrogen protection using syringe technique. The copolymers are characterized in 1H-NMR. The results show that the molecular weight and the distribution of copolymers change with the molar ratio of monomers, cycloanhydride and cycloalkyl oxide, although the alterations are not noticeable as expected.