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Catalysts 2017, 7(12), 361; doi:10.3390/catal7120361

Stereoselective Copolymerization of Styrene with Terpenes Catalyzed by an Ansa-Lanthanidocene Catalyst: Access to New Syndiotactic Polystyrene-Based Materials

1
Institut des Sciences Chimiques de Rennes, CNRS, Université de Rennes, UMR 6226, F-35042 Rennes, France
2
Total Raffinage Chimie Research, Zone Industrielle C, B-7181 Feluy, Belgium
3
Total S.A., Direction scientifique, 24 Cours Michelet, F-92069 Paris La Défense CEDEX, France
*
Authors to whom correspondence should be addressed.
Received: 3 November 2017 / Revised: 24 November 2017 / Accepted: 25 November 2017 / Published: 27 November 2017
(This article belongs to the Special Issue Catalysts for the Controlled Polymerization of Conjugated Dienes)
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Abstract

The copolymerization of bio-renewable β-myrcene or β-farnesene with styrene was examined using an ansa-neodymocene catalyst, affording two series of copolymers with high styrene content and unprecedented syndioregularity of the polystyrene sequences. The incorporation of terpene in the copolymers ranged from 5.6 to 30.8 mol % (β-myrcene) and from 2.5 to 9.8 mol % (β-farnesene), respectively. NMR spectroscopy and DSC analyses suggested that the microstructure of the copolymers consists of 1,4- and 3,4-poly(terpene) units randomly distributed along syndiotactic polystyrene chains. The thermal properties of the copolymers are strongly dependent on the terpene content, which is easily controlled by the initial feed. The terpolymerization of styrene with β-myrcene in the presence of ethylene was also examined. View Full-Text
Keywords: copolymerization; rare-earth catalyst; styrene; β-myrcene; farnesene; ethylene; bio-sourced monomers; stereocontrol; syndiotactic copolymerization; rare-earth catalyst; styrene; β-myrcene; farnesene; ethylene; bio-sourced monomers; stereocontrol; syndiotactic
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Laur, E.; Welle, A.; Vantomme, A.; Brusson, J.-M.; Carpentier, J.-F.; Kirillov, E. Stereoselective Copolymerization of Styrene with Terpenes Catalyzed by an Ansa-Lanthanidocene Catalyst: Access to New Syndiotactic Polystyrene-Based Materials. Catalysts 2017, 7, 361.

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