Abstract
Partial charge transfer between donor and acceptor groups has been used as a tool to physically structure silicone materials. In a first part, interactions between a single donor molecule, i.e. 9H-carbazole-9-ethanol, and a poly(dimethylsiloxane) functionalized on both chain-ends by acceptor groups, i.e. 3,5-dinitrobenzoate, were studied by DSC and UV-Vis analysis. The thermoreversibility of the interactions was likely demonstrated by UV-Vis analyses, which also showed a most favourable association of the complex for a 1/1 stoechiometry. The second part of this work deals with the synthesis of a triblock copolymer poly (2-(N-carbazolyl) ethyl methacrylate)-b-poly(dimethylsiloxane)-b-poly(2-(N-carbazolyl) ethyl methacrylate) by atom transfer radical polymerization in the presence of copper bromide and 1,1,4,7,10,10-hexamethyltriethylene tetramine in THF. The association of this triblock copolymer with the telechelic acceptor–based poly(dimethylsiloxane) used in the model study has been checked by rheology, which showed on heating and cooling a thermoreversible elastic/viscoelastic transition.
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Keywords
- Atom Transfer Radical Polymerization
- Atom Transfer Radical Polymerization
- Size Exclusion Chromatography
- Triblock Copolymer
- Ethyl Methacrylate
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Pouget, E., Ganachaud, F., Boutevin, B. (2008). Thermoreversible Crosslinking of Silicones Using Acceptor-Donor Interactions. In: Ganachaud, F., Boileau, S., Boury, B. (eds) Silicon Based Polymers. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-8528-4_7
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DOI: https://doi.org/10.1007/978-1-4020-8528-4_7
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