Preparation of unsaturated poly(-caprolactone) with a new titanium alkoxide

Autor: Xia, Zhean, Zerroukhi, Amar, Chalamet, Yvan, Chen, Jianding
Přispěvatelé: Lesur, Hélène, Institute of Materials Science and Engineering, East China University of Science and Technology, East China University of Science and Technology, Laboratoire de Rhéologie des Matières Plastiques (IMP-LRMP), Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon
Jazyk: angličtina
Rok vydání: 2008
Předmět:
Zdroj: Journal of Applied Polymer Science
Journal of Applied Polymer Science, Wiley, 2008, 109 (3), pp.1772-1780
ISSN: 0021-8995
1097-4628
Popis: International audience; Titanium alkoxides are widely used in the ring-opening polymerization of epsilon-caprolactone. In this study, functional poly(epsilon-caprolactone) was synthesized with a new titanium initiator by a two-step procedure: First, the titanium initiator, with an unsaturated group, was prepared by a classical organic reaction between 2-hydroxyethylmethacrylate or 2-allyloxyethanol with titanium tetrapropoxide; then, we initiated the polymerization of the epsilon-caprolactone monomer in a glass reactor or twin-screw extruder. By means of NMR spectroscopy, the structures of the initiators and polymers were determined. When 2-hydroxyethylmethacrylate was used, there was a side reaction (transesterification) during the preparation of the initiator, and so it was impossible to obtain the expected product. With 2-allyloxyethanol, the designed titanium initiator was synthesized with high purity, and the allyl moiety remained intact after the polymerization of epsilon-caprolactone
Databáze: OpenAIRE
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