ε-己内酯与环氧丙烷嵌段共聚合研究

The polymerization of e-caprolactone (CL) or propylene oxide (PO) with tetra-phenylporphyrin (TPP)-diethylaluminium chloride (et₂AlCl) as catalyst in toluene gives the polymer with narrow molecular weight distribution and is living polymerization in nature.From the living polymerization of CL or PO the block compolymers of PCL-PPO or PPO-PCL were prepared, The M, and Mw/Mn of homo-or copolymers were determined by GPC and showed that the M, increased linearly with the increase of conversion and the value of Mw/Mn was 1.19-1.25,indicating the narrow distributi-on of the molecular weights. The ratio of CL/PO (mole/mole) in the block copoly-mers were estimated by GPC or NMR spectroscopy.     

聚己内酯、聚环氧丙烷大单体制备及其与甲基丙烯酸正丁酯共聚合

聚己内酯、聚环氧丙烷大单体制备及其与甲基丙烯酸正丁酯共聚合曹维孝，管治斌，江必旺，冯新德（北京大学化学系北京１００８７１）关键词大单体，聚己内酯，聚环氧丙烷以四苯基卟啉氯化铝（ＴＰＰＡＩ－Ｃｌ）与甲基丙烯酸－β－羟基两酯（ＨＰＭＡ）制备的活性开环催化...     

ε-己内酯与环氧丙烷嵌段共聚合研究

Inoue等用四苯基卟啉(TPP)与εt_2AlCl的作用产物四苯基卟啉氯化铝(TPPAICl)进行环氧乙烷、环氧丙烷(PO)、β-丙内酯的开环聚合与嵌段共聚合已有很多报道,但Inoue近期文章也有己内酯开环聚合的报道,但1986前只用于开丙内酯聚合。所以我们1986年的文章(即本文的文献[2]是最早用此催化剂进行ε-己内酯聚合的。我们用此催化剂进行了CL的开环聚合。至于CL的嵌段共聚合,Endo等报道了用TPPAlCl/甲