[en] Copolymerization of γ-butyrolactone (γBL) with ε-caprolactone (εCL) initiated with aluminium isopropoxide trimer ([Al(OiPr)3 ]3, (A3)) is described. Copolymers with molecular weights ( ) up to 3 ; 104 and containing up to 43 mol-% repeating units derived from γBL are prepared. Their molecular weight is controlled by the concentrations of the consumed comonomers and the starting concentration of initiator { = (86.09 ; [γBL]c + 114.14 ; [εCL]0)/3[Al(OiPr)3] + 60.10}. 13C NMR and DSC data are indicative of a pseudoperiodic or random copolymer structure.
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry Materials science & engineering
Author, co-author :
Duda, Andrzej; Polish Academy of Sciences, Lodz, Poland > Department of Polymer Chemistry > Center of Molecular and Macromolecular Studies
Penczek, Stanislaw; Polish Academy of Sciences, Lodz, Poland > Department of Polymer Chemistry
Dubois, Philippe ; Université de Liège - ULiège > Department of Chemistry > Center of Molecular and Macromolecular Studies
Mecerreyes, David; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Oligomerization and copolymerization of γ-butyrolactone - a monomer known as unable to homopolymerize, 1. Copolymerization with epsilon-caprolactone
