Effect of Cu(0) particle size on the kinetics of SET-LRP in DMSO and Cu-mediated radical polymerization in MeCN at 25oC

Lligadas, G., Rosen, B. M., Bell, C. A.., Monteiro, M. J. and Percec, V. (2008) Effect of Cu(0) particle size on the kinetics of SET-LRP in DMSO and Cu-mediated radical polymerization in MeCN at 25oC. Macromolecules, 41 22: 8365-8371. doi:10.1021/ma8018365?journalCode=mamobx


Author Lligadas, G.
Rosen, B. M.
Bell, C. A..
Monteiro, M. J.
Percec, V.
Title Effect of Cu(0) particle size on the kinetics of SET-LRP in DMSO and Cu-mediated radical polymerization in MeCN at 25oC
Formatted title
Effect of Cu(0) Particle Size on the Kinetics of SET-LRP in DMSO and Cu-Mediated Radical Polymerization in MeCN at 25ºC
Journal name Macromolecules   Check publisher's open access policy
ISSN 0024-9297
Publication date 2008
Sub-type Article (original research)
DOI 10.1021/ma8018365?journalCode=mamobx
Volume 41
Issue 22
Start page 8365
End page 8371
Total pages 7
Editor Timothy P. Lodge
Place of publication USA
Publisher ACS Publications
Collection year 2009
Language eng
Subject C1
030306 Synthesis of Materials
870303 Polymeric Materials (e.g. Paints)
Abstract In order to estimate the effect of Cu(0) particle size in SET-LRP, a comparative analysis of Cu(0)/Me6-TREN-catalyzed polymerization of MA initiated with methyl 2-bromopropionate at 25 °C was performed in DMSO, a solvent that mediates the disproportionation of Cu(I)X, and in MeCN, a solvent in which Cu(I)X does not disproportionate Cu(I)X. Decreasing the Cu(0) particle size results in a marked increase in the apparent rate constant of propagation (kpapp). Decreasing the Cu(0) particle size from 425 to 0.05 μm (50 nm) increases the kpapp by almost an order of magnitude. Regardless of the Cu(0) particle size used, in DMSO a perfect SET-LRP occurs with a first-order polymerization in growing species up to 100% conversion. However, in MeCN the polymerization is not first order in growing species. The results presented here demonstrate that, in addition to the disproportionation of Cu(I)X/L into Cu(0) and Cu(II)X2/L, the particle size of Cu(0) plays a strong role in the kinetics during the entire polymerization.
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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