Title

Hyperbranched Poly(3-ethyl-3-hydroxymethyloxetane) via Anionic Polymerization

Document Type

Article

Publication Date

12-1-2002

Department

Polymers and High Performance Materials

Abstract

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.

Publication Title

Polymer

Volume

43

Issue

26

First Page

7275

Last Page

7278