Hyperbranched Poly(3-ethyl-3-hydroxymethyloxetane) via Anionic Polymerization
Polymers and High Performance Materials
Anionic polymerization of 3-ethyl-3-hydroxymethyl oxetane was achieved using NaH with coinitiators benzyl alcohol (BA) or trimethylol propane (TMP). Pendent hydroxyls facilitate a multibranching polymerization. NMR confirmed the presence of linear, dendritic, and terminal repeat units. For TMP initiated polymerizations there was an acetone soluble portion which was more branched (DB = 0.48) than the acetone insoluble portion (DB = 0.20). Polymers were not soluble in water, ether or THF, but were partially soluble in acetone and completely soluble in methanol, benzene, chloroform, and DMSO. MALDI-TOF analysis showed relatively low molecular weights (around 500) and confirmed the presence of both cyclic and TMP endgroups. (C) 2002 Elsevier Science Ltd. All rights reserved.
Smith, T. J.,
Mathias, L. J.
(2002). Hyperbranched Poly(3-ethyl-3-hydroxymethyloxetane) via Anionic Polymerization. Polymer, 43(26), 7275-7278.
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