Stable,High‐Molecular‐Weight Poly(phthalaldehyde) |
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| Authors: | Jared M. Schwartz Oluwadamilola Phillips Anthony Engler Alexandra Sutlief Jihyun Lee Paul A. Kohl |
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| Affiliation: | School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia |
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| Abstract: | Low ceiling temperature, thermodynamically unstable polymers have been troublesome to synthesize and keep stable during storage. In this study, stable poly(phthalaldehyde) has been synthesized with BF3‐OEt2 catalyst. The role of BF3 in the polymerization is described. The interaction of BF3 with the monomer is described and used to maximize the yield and molecular weight of poly(phthalaldehyde). Various Lewis acids were used to investigate the effect of catalyst acidity on poly(phthalaldehyde) chain growth. In situ nuclear magnetic resonance was used to identify possible interactions formed between BF3 and phthalaldehyde monomer and polymer. The molecular weight of the polymer tracks with polymerization yield. The ambient temperature stability of poly(phthalaldehyde) was investigated and the storage life of the polymer has been improved. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016 , 55, 1166–1172 |
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| Keywords: | accelerated aging boron trifluoride cationic polymerization complexation in situ NMR nonlinear polymers phthalaldehyde polyaldehyde self‐immolative stability stimuli‐sensitive polymers transient |
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