## Abstract The mechanism of ringβopening polymerization of some lactones and lactide initiated by lanthanum isopropoxide has been comprehensively investigated. NMR and viscosity analyses demonstrated that three active polymer chains grow per lanthanum atom and that, depending on the coordinating a
Single-Site Calcium Initiators for the Controlled Ring-Opening Polymerization of Lactides and Lactones
β Scribed by Zhiyuan Zhong; Stefan Schneiderbauer; Pieter J. Dijkstra; Matthias Westerhausen; Jan Feijen
- Publisher
- Springer
- Year
- 2003
- Tongue
- English
- Weight
- 570 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0170-0839
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π SIMILAR VOLUMES
Polyether dendrons have been successfully used as macroinitiators for the living ring-opening polymerization (ROP) of lactones and lactides. A hydroxyl group located at the focal point of dendrimers of different generations was transformed into diethyl aluminum alkoxides by reaction with triethyl al
Successful room temperature ring-opening polymerization (ROP) of e-caprolactone and d-valerolactone has been carried out using SmX 2 (X = I, Br, and cyclopentadienyl (Cp)) catalysts. SmI 2 in the presence of metallic Sm was found to have enhanced reactivity as room temperature ROP initiator for lact
Phosphoraneiminato complexes of transition metals containing the NPR 3 Γ group are known in many coordinationchemical variations [1] as a result of varying bonding modes. In complexes with metal ions in low oxidation states (i, ii) the NPR 3 Γ group acts as m 3 -N bridging ligand, in medium oxidati