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標題: Preparation and characterization of poly(epsilon-caprolactone)-b-polyacrylonitrile (PCL-b-PAN) and poly(L-lactide)-b-polyacrylonitrile (PLLA-b-PAN) copolymers by aluminum and lithium alkoxides containing double-headed initiators
作者: Yu, T.L.
Huang, B.H.
Hung, W.C.
Lin, C.C.
Wang, T.C.
Ho, R.M.
關鍵字: double-headed initiator;epsilon-caprolactone;L-lactide;ring-opening polymerization;transfer radical polymerization;chain-end;control;epsilon-caprolactone;block-copolymers;immortal;polymerization;single-site;lactide polymerization;living;polymerization;mesoporous carbons
Project: Polymer
期刊/報告no:: Polymer, Volume 48, Issue 15, Page(s) 4401-4411.
Three new metal alkoxides, [(MMPEP)Al(mu-OCH2C6H4CH2Cl)](2) (1), [(MMPEP-H)Li center dot (BnOH)](2) (2) and [(MMPEP-H)Li center dot (HOCH2C6H4CH2Cl](2) (3) (MMPEP-H-2: 2,2-methylene-bis {4,6-di(1-methyl-1-phenylethyl)phenol}) have been synthesized and characterized. Complex 1 was prepared by the reaction of [(MMPEP)Al(CH3)(Et2O)] with p-(chloromethyl)benzyl alcohol. Followed by the reaction of MMPEP-H-2 with "BuLi, BnOH or p-(chloromethyl)benzyl alcohol was added to give complexes 2 and 3, respectively. Complex 1 has shown excellent catalytic activity towards ring-opening polymerization (ROP) of F-caprolactone. Both complexes 2 and 3 are active for ROP Of L-lacticle. Block copolymers of poly(epsilon-caprolactone)-b-polyacrylonitrile (PCL-b-PAN) and poly(L-lactide)-b-polyacrylonitrile can be synthesized by combining a technique of atom transfer radical polymerization (ATRP) and ROP using a double-headed initiator. Microphase-separated morphology of PCL-b-PAN has been observed by transmission electron microscopy, indicating the formation of self-assembled nanostructure. (c) 2007 Elsevier Ltd. All rights reserved.
ISSN: 0032-3861
DOI: 10.1016/j.polymer.2007.05.044
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