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Solution homopolymerizations of n-butyl acrylate and styrene mediated using 2,2,5-trimethyl-4-tert-butyl-3-azahexane-3-oxyl (TITNO)
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Cameron, Neil R., Lagrille, Olivier, Lovell, Peter A. and Thongnuanchan, Bencha (2014) Solution homopolymerizations of n-butyl acrylate and styrene mediated using 2,2,5-trimethyl-4-tert-butyl-3-azahexane-3-oxyl (TITNO). Polymer, 55 (3). pp. 772-781. doi:10.1016/j.polymer.2013.12.060 ISSN 0032-3861.
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Official URL: http://dx.doi.org/10.1016/j.polymer.2013.12.060
Abstract
Abstract Use of Styryl-TITNO (the styrene alkoxyamine of 2,2,5-trimethyl-4-tert-butyl-3-azahexane-3-oxyl) as mediator for nitroxide-mediated polymerization (NMP) of n-butyl acrylate (BA) and styrene has been investigated at temperatures ≤110 °C. Very good control of molecular weight and molecular weight dispersity with no measurable loss of active chains, and no evidence of tails in the molecular weight distribution as conversion increases, was observed at 90 °C for BA and at 70 °C for styrene. The alkoxyamine dissociation equilibrium constant values determined for polyBA-TITNO (8.5 × 10−11 mol L−1 at 90 °C) and polystyrene-TITNO (3.1 × 10−9 mol L−1 at 70 °C) are consistent with those required for control when using more established nitroxides that require higher temperatures to achieve these values. The lower optimum polymerization temperatures with Styryl-TITNO as mediator provide new opportunities for NMP and are especially significant for styrene since this appears to eliminate completely the complications from thermal initiation.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Journal or Publication Title: | Polymer | ||||||||
Publisher: | Elsevier Science BV | ||||||||
ISSN: | 0032-3861 | ||||||||
Official Date: | 12 February 2014 | ||||||||
Dates: |
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Volume: | 55 | ||||||||
Number: | 3 | ||||||||
Page Range: | pp. 772-781 | ||||||||
DOI: | 10.1016/j.polymer.2013.12.060 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Adapted As: |
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