Aliphatic Diacidic Long-Chain C16 Polyesters from 10,16-Dihydroxyhexadecanoic Acid Obtained from Tomato Residual Wastes
Daniel Arrieta-Baez, José Vicente Hernández Ortíz, José Campos Terán and 2 more
Molecules · 2019
doi:10.3390/molecules24081524 (opens in a new tab)
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Abstract
10,16-dihydroxyhexadecanoic acid obtained from agroresidual tomato waste, was oxidized to produce 7-oxohexadecanedioic acid in good yield (>70%) and purified without oxidation side products in one step. Polycondensation with 1,8-octanediol, yielded the polyester (poly(<i>ω</i>-carboxyl PA-<i>co</i>-OD)) with M<sub>w</sub> = 2155.15 and M<sub>n</sub> = 1637.27. The best enzymatic reaction conditions to get the polyester were using lipase CAL-B (%-by-wt relative to monomer) in toluene as a solvent for 1 h at 60 °C. The poly(<i>ω</i>-carboxyl PA-<i>co</i>-OD) was characterized by <sup>1</sup>H- and <sup>13</sup>C-NMR, mass spectrometry (MALDI-TOF) and the polyester film formed with a Langmuir-Blodgett Trough was analyzed by means of spectroscopic ellipsometry and atomic force microscopy.
Abstract licence: CC BY
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