Journal
EUROPEAN POLYMER JOURNAL
Volume 40, Issue 7, Pages 1283-1290Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2004.02.024
Keywords
reversible addition-fragmentation polymerization; ring-opening polymerization; miktoarm star copolymer; L-lactide
Categories
Ask authors/readers for more resources
Poly(ethylene oxide) methyl ether/polystyrene/poly(L-lactide) (NIPEO/PSt/PLLA) ABC miktoarm star copolymers were synthesized by combination of reversible addition-fragmentation transfer (RAFT) polymerization and ring-opening polymerization (ROP) using bifunctional macro-transfer agent, MPEO with two terminal dithiobenzoate and hydroxyl groups. It was prepared by reaction of MPEO with maleic anhydride (MAh), subsequently reacted with dithiobenzoic acid and ethylene oxide. RAFT polymerization of St at 110 degreesC yielded block copolymer, MPEO-b-PSt KMPEO)(PSt)-CH2OH], and then it was used to initiate the polymerization Of L-lactide in the presence of Sn(OCt)(2) at 115 degreesC to produce ABC miktoarm star polymers, s+[(MPEO)(PSt)(PLLA)]. The structures of products obtained at each synthetic step were confirmed by NMR and gel permeation chromatography data. (C) 2004 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available