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    Aliphatic Diacidic Long-Chain C16 Polyesters from 10,16-Dihydroxyhexadecanoic Acid Obtained from Tomato Residual Wastes

    Year: 2019

    Journal: Molecules, Volume 24, APR 2

    Authors: Arrieta-Baez, Daniel; Hernandez Ortiz, Jose Vicente; Campos Teran, Jose; Torres, Eduardo; Beatriz Gomez-Patino, Mayra

    Organizations: Consejo Nacional de Ciencia y Tecnologia (CONACyT)Consejo Nacional de Ciencia y Tecnologia (CONACyT) [253570]; SIP-IPN [20180998, 20181425]

    Keywords: polyesters; lipases; MALDI-TOF; tomato; agroresidual waste

    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(-carboxyl PA-co-OD)) with M-w = 2155.15 and M-n = 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 degrees C. The poly(-carboxyl PA-co-OD) was characterized by H-1- and C-13-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.
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