Influence of the Z-group on the RAFT-mediated polymerizations in nanoreactors

Valade, David, Jeon, Yujung, Kessel, Stefanie and Monteiro, Michael J. (2012) Influence of the Z-group on the RAFT-mediated polymerizations in nanoreactors. Journal of Polymer Science Part A-Polymer Chemistry, 50 22: 4762-4771. doi:10.1002/pola.26300


Author Valade, David
Jeon, Yujung
Kessel, Stefanie
Monteiro, Michael J.
Title Influence of the Z-group on the RAFT-mediated polymerizations in nanoreactors
Journal name Journal of Polymer Science Part A-Polymer Chemistry   Check publisher's open access policy
ISSN 0887-624X
1099-0518
Publication date 2012-11
Sub-type Article (original research)
DOI 10.1002/pola.26300
Volume 50
Issue 22
Start page 4762
End page 4771
Total pages 10
Place of publication Hoboken, NJ, United States
Publisher John Wiley & Sons
Collection year 2013
Language eng
Formatted abstract
In this work, we showed that the self-assembly behavior of the macro-chain transfer agent P(DMA 69-b-NIPAM 60)-Si-(Ci=S)-Si-C 12H 25 [dodecyltrithiocarbonate (DTTC)] was very different to P(DMA 68-b-NIPAM 62)-Si-(Ci=S)-Si-C 4H 9 [butyltrithiocarbonate (BTTC)], resulting in very different water-based nanoreactor polymerizations. The DTTC diblock formed small aggregates below the lower critical solution temperature (LCST), which increased slightly above the LCST. This is in contrast to the BTTC diblock, in which unimers existed below the LCST and large aggregates of core-shell nanoreactors were present above the LCST. Polymerization of styrene in the DTTC diblock nanoreactors afforded fast rates of polymerization with the production of narrow molecular weight and particle size distributions. We found a direct relationship between the size and the targeted molecular weight; the greater the targeted the molecular weight the greater the particle size.
Keyword Block copolymers
Living radical polymerization (LRP)
Nanoreactor
Particle size distribution
Reversible addition fragmentation chain transfer (RAFT)
RAFT polymerization
Self-assembly
Surfactant-free emulsion
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article first published online: 20 August 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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