Synthesis of hyperbranched aliphatic polyethers via cationic ring-opening polymerization of 3-ethyl-3-(hydroxymethyl)oxetane

Authors
Magnusson, H Malmstrom, E Hult, A
Citation
H. Magnusson et al., Synthesis of hyperbranched aliphatic polyethers via cationic ring-opening polymerization of 3-ethyl-3-(hydroxymethyl)oxetane, MACRO RAPID, 20(8), 1999, pp. 453-457
Citations number
15
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULAR RAPID COMMUNICATIONS
ISSN journal
10221336 → ACNP
Volume
20
Issue
8
Year of publication
1999
Pages
453 - 457
Database
ISI
SICI code
1022-1336(199908)20:8<453:SOHAPV>2.0.ZU;2-G
Abstract
Thermally initiated cationic ring-opening polymerization of 3-ethyl-3-(hydr oxymethyl) oxetane was carried out using benzyltetramethylenesulfonium hexa fluoroantimonate as initiator. The resulting hydroxy-functional polyether w as thoroughly analyzed by H-1 and C-13 NMR spectroscopy and found to have a hyperbranched architecture with a degree of branching of 0.4. The polyethe r was successfully employed as a multifunctional initiator for epsilon-capr olactone. Molecular weight measurements on the polyether showed a narrow mo lecular weight distribution analyzed by SEC and MALDI-TOF (1.3 and 1.4, res pectively).