Homopolymerization and copolymerization of a dilactone, 13,26‐dihexyl‐1,14‐dioxa‐cyclohexacosane‐2,15‐dione: Synthesis of bio‐based polyesters and copolyesters consisting of 12‐hydroxystearate sequences |
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| Authors: | Chan Woo Lee Kazunari Masutani Tomokazu Kato Yoshiharu Kimura |
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| Institution: | 1. Department of Innovative Industrial Technology, Hoseo University, Asan, Chungnam 336‐851, Korea;2. Department of Biomolecular Engineering, Kyoto Institute of Technology Matsugasaki, Sakyo‐ku, Kyoto 606‐8585, Japan |
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| Abstract: | A dilactone, 13,26‐dihexyl‐1,14‐dioxacyclohexacosane‐2,15‐dione (12‐HSAD), was synthesized by lipase‐catalyzed reaction of 12‐hydroxystearic acid (12‐HSA) in high yield. It was subjected to the ring‐opening polymerization with various catalysts to obtain poly(12‐hydroxystearate) (PHS). The polymerization system of 12‐HSAD showed an interesting polymerization behavior because of its large ring system. The polymers produced by this polymerization were directly reacted with L ‐lactide to obtain a diblock copolymer of poly(L ‐lactide)‐block‐poly‐(12‐hydroxystearate) (PLLA‐b‐PHS). Characterization of the resultant copolymers was also performed. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011 |
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| Keywords: | biodegradable copolymerization dilactone ring‐opening polymerization polyesters poly(12‐hydroxystearate) poly(L‐lactide) |
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