Fe-Al-〆,〆′-联吡啶催化PA与PO、PA与ECH开环共聚  

Ring-Opening Alternating Copolymerization of Phthalic Anhydride and Propylene Oxide or Epichlorohydrin by Fe-Al- 〆 , 〆 ′-Dipyridyl Catalyst

作　　者：房江华[1] 章哲彦[1] 

机构地区：[1]宁波大学

出　　处：《分子催化》2000年第2期129-132,共4页Journal of Molecular Catalysis(China)

基　　金：浙江省自然科学基金!( 2 990 61);浙江省教委科研基金!( 19990 2 17)

摘　　要：用 Fe(acac) 3- Al(i- Bu) 3- α,α′-联吡啶 (acac=乙酰丙酮 )催化邻苯二甲酸酐 (PA)与环氧丙烷 (PO)、邻苯二甲酸酐与环氧氯丙烷 (ECH)开环交替共聚 .研究了 Fe/Al、Fe/α,α′-联吡啶摩尔比对聚合的影响 ;用核磁共振技术研究了共聚物的交替度 ,测得共聚物中邻苯二甲酸酐含量达 46 %以上 .共聚反应动力学研究表明 ,共聚反应速度与单体浓度及催化剂浓度均呈一级关系 ;PA- PO、PA- ECH的表观活化能分别为 10 9.3和 99.7kThe characteristics and structures of alternating copolymers of phthalic anhydride with propylene oxide or epichlorohydrin by Fe\|Al\| α , α ′\|dipyridyl are presented and discussed. The copolymers were characterized using IR and \{\}\+1H\|NMR. The copolymer is a product of high alternation. Phthalic anhydride amounts to 46% in the copolymer. The copolymerization can be realized in solvents, such as aromatic hydrocarbons and alkanes. The yield is higher in aromatic hydrocarbon than in other solvents. The suitable Al/Fe molar ratio is 2～6. The suitable Fe/ α , α ′\|dipyridyl molar ratio is 1. Kinetic study on the titled catalyst indicates that E equal 109.3 kJ/mol for PA\|PO and 99.7 kJ/mol for PA\|ECH.

关 键 词：联吡啶催化剂 共聚 PA PO ECH 催化 

分 类 号：O643.32[理学—物理化学] O631.5[理学—化学]