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Polymerization of 10,16-Dihydroxyhexadecanoic Acid, Main Monomer of Tomato Cuticle, Using the Lewis Acidic Ionic Liquid Choline Chloride·2ZnCl2

2015; Frontiers Media; Volume: 2; Linguagem: Inglês

10.3389/fmats.2015.00067

2296-8016

Mayra Beatriz Gómez‐Patiño, Diana Yaremy Gutiérrez-Salgado, Edgar García‐Hernández, Juan Vicente Méndez‐Méndez, José Alberto Andraca Adame, José Campos‐Terán, Daniel Arrieta‐Báez,

Lignin and Wood Chemistry

10,16-dihydroxyhexadecanoic acid, main monomer of the tomato cuticle obtained from agro-residual wastes, was polymerized using (choline chloride.2ZnCl2) ionic liquid as catalyst at three different temperatures (80, 90 and 100 °C). The resulting polyesters obtained under these conditions were insoluble in most of the organic solvents and showed different physicochemical properties. While at 80 °C polymers were obtained as powder, at higher temperature they were found in viscous consistency. According with the CP MAS 13C NMR and FTIR-ATR analysis, polymers showed a linear structure with an increasing degree of esterification in position C-10. Polyesters were analyzed by means of differential scanning calorimetry (DSC), atomic force microscopy (AFM) and X ray diffraction (small- and wide-angle scattering, SWAXS) techniques.