Data for Alkyl Substituted Polycaprolactone Poly(Urethane-Urea)s as Mechanically-Competitive and Chemically-Recyclable Materials
2024-07-18
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Data for Alkyl Substituted Polycaprolactone Poly(Urethane-Urea)s as Mechanically-Competitive and Chemically-Recyclable Materials
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2024-07-18
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Hillmyer, Marc A
hillmyer@umn.edu
hillmyer@umn.edu
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Abstract
We report the mechanical performance and chemical recycling advantages of implementing alkyl-substituted poly(ε-caprolactones) (PCLs) as soft segments in thermoplastic poly(urethane-urea) (TPUU) materials. Poly(4-methylcaprolactone) (P4MCL) and poly(4-propylcaprolactone) (P4PrCL) were prepared, reacted with isophorone diisocyanate, and chain-extended with water to form TPUUs. The resulting materials’ tensile properties were similar to or superior to a commercially available polyester thermoplastic poly(urethane), and had superior elastic recovery compared to a PCL analogue due to the non-crystalline nature of P4MCL and P4PrCL. Additionally, monomers were recovered from the TPUU materials in high yields via ring-closing depolymerization using a reactive distillation approach at elevated temperature and reduced pressure (240–260 °C, 25-140 mTorr) with zinc chloride (ZnCl2) as the catalyst. The thermodynamics of polymerization were estimated using Van’t Hoff analyses for 4MCL and 4PrCL; these results indicated that the propyl group in 4PrCL results in a lower practical ceiling temperature (Tc) for P4PrCL.
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A full description can be found in the README.txt file. The files below include raw data used in the corresponding manuscript including: nuclear magnetic resonance (NMR) data, polymerization kinetics data, time-temperature superposition curve data, size exclusion chromatography (SEC) data, infrared (IR) spectroscopy data, thermal gravimetric analysis (TGA) data, differential scanning calorimetry (DSC) data, dynamic mechanical thermal analysis (DMTA) data, small-angle x-ray scattering (SAXS) data, wide-angle x-ray scattering (WAXS) data, uniaxial static tensile testing data, hysteresis data, chemical recycling yield data, gas chromatography (GC) data, mass spectroscopy (MS) data, heat of combustion data, Van't Hoff analysis and ceiling temperature (Tc) determination data. The ChemDraw schemes are included as both a .cdxml and .tif file. Experimental set-up images are also included as .jpg files. All raw data was converted to .xlsx files for simplicity and can be opened using a spreadsheet editor such as Microsoft Excel.
Referenced by
Alkyl Substituted Polycaprolactone Thermoplastic Poly(Urethane-Urea)s as Mechanically-Competitive and Chemically-Recyclable Materials by Pfau-Cloud et. al. under review
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Department of Energy (DOE) Bio-Optimized Technologies to keep Thermoplastics out of Landfills and the Environment, DE-EE0002245.
National Science Foundation Center for Sustainable Polymers, CHE-1901635.
Contract for x-ray scattering beamline time at Brookhaven National Laboratory, DE-SC0012704.
National Science Foundation Center for Sustainable Polymers, CHE-1901635.
Contract for x-ray scattering beamline time at Brookhaven National Laboratory, DE-SC0012704.
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Pfau-Cloud, Michaela R; Batiste, Derek C; Kim, Hee Joong; Ellison, Christopher J; Hillmyer, Marc A. (2024). Data for Alkyl Substituted Polycaprolactone Poly(Urethane-Urea)s as Mechanically-Competitive and Chemically-Recyclable Materials. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://hdl.handle.net/11299/264123.
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