Journal
DESIGNED MONOMERS AND POLYMERS
Volume 8, Issue 6, Pages 609-617Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1163/156855505774597759
Keywords
star di-block co-polymers; cationic ring-opening polymerization; photo-induced radical polymerization
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Trimesic acid trichlofide was used as a core to prepare a tri-arm star di-block copolymer, namely poly (tetrahydrofuran-b-methyl methacrylate) (PTHF3-b-PMMA(3)), via combination of cationic ring-opening polymerization (CROP) and photo-induced radical polymerization routes. First. a trimesic acid trichloride-AgSbF6 or -AgCF3SO3 initiation system was utilized for the CROP of THE The tri-arm star PTHF thus obtained was in situ terminated by 2-methyl pyridine N-oxide. Second, a sensitized irradiation of PTHF with a 2-methyl pyridinium N-oxide photoactive end-group in the presence of anthracene initiated the radical polymerization of MMA in order to give resulting star di-block co-polymer. The obtained polymers were characterized with gel-permeation chromatography (GPC) and H-1-NMR.
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