Synthesis and physicochemical study of polyester polyols of epoxy resin of 2,4,6‐tris(4‐hydroxyphenyl)‐1,3,5‐triazine and their polyurethanes
作者： Rizwan Y. Ghumara , Jignesh P. Patel , Pooja P. Adroja , Parsotam H. Parsania
DOI: 10.1002/APP.40203
关键词: Materials science 、 Ultimate tensile strength 、 Differential scanning calorimetry 、 Ethylene glycol 、 Polyester 、 Rosin 、 Polymer chemistry 、 Nuclear chemistry 、 Thermogravimetric analysis 、 Epoxy 、 Fourier transform infrared spectroscopy
摘要: Polyester polyols of ricinoleic acid (ETPRA), oleic acid, linoleic (ETPLA), and rosin (ETPR) epoxy resin 2,4,6-tris(4-hydroxyphenyl)-1-3-5-triazine (ETP) their polyurethanes (PUs) were synthesized characterized by Fourier transform infrared spectroscopy, NMR, differential scanning calorimetry, thermogravimetric analysis techniques. The PU films showed the following density order: ETPRPU600 > ETPRAPU600 > ETPLAPU600. ETPLAPU600 good tensile strength volume resistivity values compared to ETPRAPU600 ETPRPU600. All three PUs electric strength. almost double incorporation soft-segment poly(ethylene glycol) 600 into chains resulted in flexibility films. a high water absorption tendency water, acidic, saline environments, they degraded an alkaline environment. weight gain was due surface solvolysis also probably microcrack formation. polyester thermally stable up about 167–221 184–214°C, respectively, followed multistep degradation reactions with either fractional or integral order (0.43–2.71) kinetics. Thus, structure affected studied physicochemical properties © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40203.
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