Poly(p‐phenylene methylene)‐based block copolymers by mechanistic transformation |
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| Authors: | Mehmet Atilla Tasdelen Selim Beyazit Deniz Gunes Niyazi Bicak Pinar Tatar A Levent Demirel Yusuf Yagci |
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| Institution: | 1. Department of Chemistry, Istanbul Technical University, Maslak, Istanbul 34469, Turkey;2. Department of Polymer Engineering, Faculty of Engineering, Yalova University, TR‐77100 Yalova, Turkey;3. Chemistry Department, Koc University, Rumelifeneri Yolu, Sariyer, Istanbul 34450, Turkey |
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| Abstract: | The synthesis of poly(p‐phenylene methylene) (PPM)‐based block copolymers such as poly(p‐phenylene methylene)‐b‐poly(ε‐caprolactone) and poly(p‐phenylene methylene)‐b‐polytetrahydrofuran by mechanistic transformation was described. First, precursor PPM was synthesized by acid‐catalyzed polymerization of tribenzylborate at 16 °C. Then, this polymer was used as macroinitiators in either ring‐opening polymerization of ε‐caprolactone or cationic ring‐opening polymerization of tetrahydrofuran to yield respective block copolymers. The structures of the prepolymer and block copolymers were characterized by GPC and 1H NMR investigations. The composition of block copolymers as determined by 1H NMR and TGA analysis was found to be in very good agreement. The thermal behavior and surface morphology of the copolymers were also investigated, respectively, by differential scanning calorimetry and atomic force microscopy measurements, and the contribution of the major soft segment has been observed. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011 |
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| Keywords: | block copolymers cationic polymerization cationic ring‐opening polymerization poly(ε ‐caprolactone) polybenzyl poly(p‐phenylene methylene) polytetrahydrofuran ring‐opening polymerization |
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