The Library
Preparation of methacrylate end-functionalized poly(2-ethyl-2-oxazoline) macromonomers
Tools
Weber, Christine, Becer, C. Remzi, Baumgaertel, Anja, Hoogenboom, Richard and Schubert, Ulrich S. (2009) Preparation of methacrylate end-functionalized poly(2-ethyl-2-oxazoline) macromonomers. Designed Monomers & Polymers, Vol.12 (No.2). pp. 149-165. doi:10.1163/156855509X412090 ISSN 1385-772X.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1163/156855509X412090
Abstract
Three methods for the functionalization of 2-ethyl-2-oxazoline (EtOx) oligomers with a methacrylate or methacrylamide unit are compared to identify the best suitable route to obtain such macromolecules. In the first method, a functional initiator, namely methacryloyl chloride, was used for the cationic ring-opening polymerization of EtOx, which proceeded in a living manner. However, the formation of a large amount of hydrogen initiated chains resulted in a low degree of functionalization (21%). The second method was based on the termination of active oligo(EtOx) chains with an aqueous sodium carbonate solution yielding hydroxyl-terminated oligomers. These end-groups were subsequently modified by an esterification reaction with methacryloyl chloride yielding oligomers with a large variety of different end-groups, as demonstrated by MALDI-TOF-MS. In the last method, the living chain ends were reacted with in situ formed triethyl ammonium methacrylate yielding macromonomers with a high degree of functionalization (>80%). Besides, MALDI-TOF-MS analysis revealed only a single oligomer distribution with the desired end-groups. Furthermore, these directly end-capped oligomers revealed narrow molar mass distributions with PDI values below 1.2 making this the best method for macromomonomer synthesis.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
Library of Congress Subject Headings (LCSH): | Methyl methacrylate, Polymers, Monomers, Macromolecules, Polymerization | ||||
Journal or Publication Title: | Designed Monomers & Polymers | ||||
Publisher: | V S P | ||||
ISSN: | 1385-772X | ||||
Official Date: | 2009 | ||||
Dates: |
|
||||
Volume: | Vol.12 | ||||
Number: | No.2 | ||||
Page Range: | pp. 149-165 | ||||
DOI: | 10.1163/156855509X412090 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |