Polymer cyclization inhibits thermal decomposition of carbon‐dioxide‐derived poly(propylene carbonate)s |
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Authors: | Satoshi Honda Hiroshi Sugimoto |
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Affiliation: | Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, Shinjuku‐Ku, Tokyo, Japan |
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Abstract: | Remarkable enhancement of CO2‐derived poly(propylene carbonate) (PPC) against thermal decomposition was achieved by cyclization of linear PPCs. Thus, a CO2‐derived linear vinyl‐telechelic PPC was synthesized by CO2–propylene oxide alternating copolymerization initiated from H2O followed by an end‐capping esterification with 4‐pentenoic acid. Cyclic PPC was synthesized by the end‐to‐end intramolecular reaction of the vinyl‐telechelic linear PPC by metathesis condensation. Comparison of the thermal decomposition temperature (Td) with linear and cyclic PPCs confirms surprisingly enhanced Tds of cyclic PPCs. The elimination of chain ends through cyclization is indeed valuable for enhancing Td of CO2‐derived PPCs and thus turn the spotlight on the materials design utilizing CO2. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016 , 54, 3336–3342 |
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Keywords: | carbon dioxide cyclic polymer epoxide polycarbonates thermal decomposition |
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