Whitfield, Richard, Anastasaki, Athina, Truong, Nghia P., Wilson, Paul, Kempe, Kristian, Burns, James A., Davis, Thomas P. and Haddleton, David M. (2016) Well-defined PDMAEA stars via Cu(0)-mediated reversible deactivation radical polymerization. Macromolecules . doi:10.1021/acs.macromol.6b01511 ISSN 0024-9297 .

PDF WRAP_9370782-ch-161116-pdmaea_stars_final_draft_revisions2.pdf - Accepted Version - Requires a PDF viewer. Download (939Kb)

Request Changes to record.

Abstract

The Cu(0)-mediated reversible deactivation radical polymerization of N,N′-dimethylaminoethyl acrylate in DMSO and IPA at ambient temperature using Cu(0) wire is investigated. Tetra- and octafunctional initiators were utilized to facilitate the synthesis of well-defined PDMAEA star homo and block copolymers with a range of molecular weights (Mn ∼ 5000–41 000 g mol–1). Both solvents demonstrated to be excellent media for the controlled polymerization of DMAEA, yielding narrow molecular weight distributions (Đ ∼ 1.1) when the reactions were ceased at ∼40% conversion. Interestingly, at high conversions (typically >55%) high and low molecular weight shoulders were evident by SEC when DMSO and IPA were used, respectively, suggesting a large extent of termination and/or side reactions at prolonged reaction times. Nevertheless, high end group fidelity could be maintained when immediate precipitation of the polymers (at lower conversion) was performed, yielding low dispersed P(DMAEA-b-MA) star block copolymers (Đ < 1.19, Mn ∼ 20 000 g mol–1). Importantly, guidelines on how to prevent hydrolysis, termination, and side reactions of PDMAEA as well as how to purify and store such materials are also provided and discussed.

Item Type:	Journal Article
Subjects:	Q Science > QD Chemistry
Divisions:	Faculty of Science, Engineering and Medicine > Science > Chemistry
Library of Congress Subject Headings (LCSH):	Polymerization, Block copolymers, Solvents, Hydrolysis
Journal or Publication Title:	Macromolecules
Publisher:	American Chemical Society
ISSN:	0024-9297
Official Date:	15 November 2016
Dates:	Date Event 15 November 2016 Available 15 November 2016 Accepted
DOI:	10.1021/acs.macromol.6b01511
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Date of first compliant deposit:	17 November 2016
Date of first compliant Open Access:	15 November 2017
Funder:	University of Warwick, Australian Research Council (ARC), Syngenta Seeds Ltd., Advantage West Midlands (AWM), European Regional Development Fund (ERDF), Royal Society (Great Britain). Wolfson Research Merit Award (RSWRMA)
Grant number:	CE140100036 (ARC)

Request changes or add full text files to a record

Repository staff actions (login required)

View Item

Downloads