Polystyrene‐block‐polylactide obtained by the combination of atom transfer radical polymerization and ring‐opening polymerization with a commercial dual initiator |
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| Authors: | Mohammed Dirany Patrick Lacroix‐Desmazes Marylène Vayer René Erre Bernard Boutevin Christophe Sinturel |
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| Affiliation: | 1. Centre de Recherche sur la Matière Divisée, 1B rue de la Férollerie, 45071 Orleans Cedex 2, France;2. Institut Charles Gerhardt, Unité Mixte de Recherche 5253, Centre National de la Recherche Scientifique, Université Montpellier 2‐Ecole Nationale Supérieure de Chimie de Montpellier‐Université Montpellier 1, Ingénierie et Architectures Macromoléculaires, Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), 8 Rue de l'Ecole Normale, 34296 Montpellier Cedex 5, France |
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| Abstract: | A polystyrene (PS)‐b‐polylactide (PLA) block copolymer was prepared from the combination of atom transfer radical polymerization and ring‐opening polymerization with commercially available 2,2,2‐tribromoethanol as a dual initiator in a sequential two‐step procedure. Hydroxyl‐terminated polystyrene (PS‐OH)s with various molecular weights were first prepared with polydispersity indices lower than 1.3; these provided valuable macroinitiators for the polymerization of D,L ‐lactide. A block copolymer with a composition allowing the formation of hexagonally packed PLA cylinders in a PS matrix was then obtained. The PS‐b‐PLA thin films revealed, after vapor solvent annealing, a hexagonally packed organization of the PLA cylinders, which was oriented perpendicularly to the surface of the film. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 |
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| Keywords: | atom transfer radical polymerization (ATRP) block copolymers nanotechnology ring‐opening polymerization thin films |
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