Supporting data for "4-Carboalkoxylated Polyvalerolactones from Malic Acid: Tough and Degradable Polyesters"
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Supporting data for "4-Carboalkoxylated Polyvalerolactones from Malic Acid: Tough and Degradable Polyesters"
Published Date
2020-04-13
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Hoye, Thomas
hoye@umn.edu
hoye@umn.edu
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Abstract
Eight 4-carboalkoxyvalerolactones (CRVLs), varying in the composition of their alkyl (R) side chains, were synthesized from malic acid and subjected to ring-opening transesterification polymerization (ROTEP) using diphenyl phosphate [DPP, (PhO)2PO2H] as a catalyst. Each CRVL produced a semicrystalline poly(4-carboalkoxyvalerolactone) (PCRVL), and the nature of the R group impacted the thermal transitions of these polyesters. Bulk polymerizations at 70 °C allowed for preparation of high molar mass samples that contained small amounts of branching, as evidenced by 1H NMR spectroscopy, MALDI spectrometry, size-exclusion chromatography, and eliminative degradation. Tensile testing of these lightly branched, high molar mass samples revealed that these polyesters are tough (tensile toughness values up to 88 ± 33 MJ•m–3) and have Young’s moduli (E) up to 186 ± 13 MPa. The acid- and base-catalyzed hydrolytic degradation of the PCRVLs was quantitatively monitored using total organic carbon analysis, and effect of the alkyl chain length on PCRVL hydrolysis rate was determined. Finally, the methyl ester variant of these malic acid-derived thermoplastics is known to be chemically recyclable.
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Each type of data is collected in a single master folder (e.g., NMR spectra, SEC chromatograms, etc.) and then segregated into separate folders.
Referenced by
Fahnhorst, G., De Hoe, G., Hillmyer, M., & Hoye, T. (2020). 4-Carboalkoxylated Polyvalerolactones from Malic Acid: Tough and Degradable Polyesters. Macromolecules. 53, 8, 3194-3201.
https://doi.org/10.1021/acs.macromol.0c00212
https://doi.org/10.1021/acs.macromol.0c00212
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The research was conducted with financial support from: i) an NSF-funded Center for Chemical Innovation, the NSF Center for Sustainable Polymers (CHE-1901635) and ii) the University of Minnesota Doctoral Dissertation Fellowship program. Some NMR data were collected on instruments that were purchased through the NIH Shared Instrumentation Grant Program (S10OD011952).
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Hoye, Thomas; De Hoe, Guilhem; Fahnhorst, Grant; Hillmyer, Marc. (2020). Supporting data for "4-Carboalkoxylated Polyvalerolactones from Malic Acid: Tough and Degradable Polyesters". Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/z341-jg60.
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