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Title Synthesis and characterization of two classes of hyperstar polymers bearing hyperbranched cores grafted with linear arms
Date 15.05.2012
Number 31705
Abstract New hyperstar polymers (HSP) consisting of two different hyperbranched (hb) aromatic/aliphatic cores grafted with linear polymer arms were successfully synthesized. The hb cores were based on either hb poly(vinylbenzylchloride) synthesized by SCVP-ATRP or hb polyester from a polycondensation reaction. For the core-first approach, the hb cores have been modified to hb macroinitiators initiating either the cationic ring-opening polymerization of oxazolines (Oxa) or the atom transfer radical polymerization of alkylmethacrylates. For potential use as reactive binders in epoxy coatings the HSPs were equipped with a defined amount of OH-groups during arm growth via controlled block-copolymerization with nonfunctionalized and OH-functionalized monomers, either an oxazoline (OH)Oxa (2-[1-(hydroxymethyl)ethyl]-oxazoline) or a methacrylate HEMA (2-hydroxyethyl methacrylate). The amount of OH-groups could be well adjusted in this way. The hyperstars were comprehensively characterized with respect to chemical structure and molecule dimension. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 000: 000–000, 2012
Publisher Journal of Polymer Science: Part A: Polymer Chemistry
Identifier
Citation Journal of Polymer Science: Part A: Polymer Chemistry 50 (2012) 1979-1990
DOI https://doi.org/10.1002/pola.25972
Authors Däbritz, F. ; Lederer, A. ; Komber, H. ; Voit, B.
Tags cationic polymerization hyperbranched polymers hyperstar polymers scvp star polymers cationic photopolymerization chain transfer epoxy-resins polymerization polyesters additives copolymerization thermosets strategy monomers

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