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Authors
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Däbritz, F. ; Lederer, A. ; Komber, H. ; Voit, B.
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Title
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Synthesis and characterization of two classes of hyperstar polymers bearing hyperbranched cores grafted with linear arms
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Date
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15.05.2012
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Number
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31705
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Abstract
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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: 000000, 2012
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Publisher
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Journal of Polymer Science: Part A: Polymer Chemistry
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Wikidata
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Citation
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Journal of Polymer Science: Part A: Polymer Chemistry 50 (2012) 1979-1990
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DOI
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https://doi.org/10.1002/pola.25972
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Tags
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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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