In situ generated,tetrahydrosalen stabilized yttrium borohydride complex:Efficient initiator for the ring-opening polymerization of ε-caprolactone  

作　　者：Jing Huang Jian Fang Yu Guang Ming Wu Wei Lin Sun Zhi Quan Shen 

机构地区：[1]Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China

出　　处：《Chinese Chemical Letters》2009年第11期1357-1360,共4页中国化学快报（英文版）

基　　金：supports from National Natural Science Foundation(Nos.20674071, 20774078);the Special Funds for Major State Basic Research Projects(No.2005CB623802)

摘　　要：In this paper, we report the preparation of a new tertrahydrosalen-stabilized yttrium complex which was employed as an initiator-precursor for the polymerization of ε-caprolactone （ε-CL） in the presence of NaBH4 to give interesting hydroxytelechelic poly（ε-caprolactone） （PCL）. The effect of [monomer]/[initiator] （[CL]/[I]）, temperature and time on the polymerization was investigated. It was found that under the condition： [CL]/[I] = 1200, 55℃, toluene： 0.5 mL, ε-CL： 0.5 mL, PCL with Mw = 32,600 and PDI = 1.47 was obtained.In this paper, we report the preparation of a new tertrahydrosalen-stabilized yttrium complex which was employed as an initiator-precursor for the polymerization of ε-caprolactone （ε-CL） in the presence of NaBH4 to give interesting hydroxytelechelic poly（ε-caprolactone） （PCL）. The effect of [monomer]/[initiator] （[CL]/[I]）, temperature and time on the polymerization was investigated. It was found that under the condition： [CL]/[I] = 1200, 55℃, toluene： 0.5 mL, ε-CL： 0.5 mL, PCL with Mw = 32,600 and PDI = 1.47 was obtained.

关 键 词：Tetrahydrosalen Yttrium complex Ring-opening polymerization Ε-CAPROLACTONE 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业] O614.112[理学—无机化学]