Polyurethanes from tung oil: Polymer characterization and composites
作者： M.A. Mosiewicki , U. Casado , N.E. Marcovich , M.I. Aranguren
DOI: 10.1002/PEN.21300
关键词: Polymer 、 Polyurethane 、 Wood flour 、 Microcrystalline cellulose 、 Polymer characterization 、 Polyol 、 Fourier transform infrared spectroscopy 、 Composite material 、 Materials science 、 Triethanolamine
摘要: A natural polyol was obtained from tung oil (TO) to be further used in the formulation of rigid polyurethane polymers. The synthesis carried out two steps: first hydroxylation double bonds fatty acid chains unsaturated and then, alcoholysis hydroxylated with triethanolamine. chemical analysis (titration, FTIR, 1H NMR) unmodified TO, oil, alcoholized oil-based indicates that hydroxyl content increased significantly after reactions. modified TO subsequently as component reinforced polyurethanes. Wood flour (WF) microcrystalline cellulose were reinforcements chosen incorporated these materials. Physical, thermal, mechanical properties neat polyurethanes measured analyzed. An excellent dispersion WF matrix, confirmed by scanning electron microscopy, observed WF. This system also presented highest modulus strength. POLYM. ENG. SCI., 2009. © 2009 Society Plastics Engineers
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