Characterization of Plukenetia volubilis L. fatty acid-based alkyd resins |
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Institution: | 1. ICP-PUCP. Instituto de Corrosión y Protección, Pontificia Universidad Católica del Perú PUCP, Avenida Universitaria 1801, Lima 32, Peru;2. CIDEPINT. Centro de Investigación y Desarrollo en Tecnología de Pinturas, Calle 52 e/121 y 122, 1900 La Plata, Argentina;1. Centro de Nanociencia y Nanotecnologia, Universidad de las Fuerzas Armadas ESPE, Av. Gral. Rumiñahui s/n, Sangolqui, P.O. BOX 171-5-231B, Ecuador;2. Department of Chemistry, TATA College, Kolhan University, Chaibasa, 833202, Jharkhand, India |
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Abstract: | Fatty acid-based alkyd resins prepared with different amounts of glycerol and pentaerythritol were characterized. Sacha inchi oil and linseed oil (comparative purposes) were used as fatty acids’ sources. FT-IR and 1H NMR spectroscopy were done for alkyd structural verification. Alkyd resins were evaluated through physico-chemical (colour, density, viscosity) and thermal characterization. Film coating performance (drying, hardness, chemical resistance) was also studied. The oxidative crosslinking time tendency was corroborated by the quartz crystal microbalance (QCM) technique. Alkyd resins obtained with fatty acids from sacha inchi and linseed oils had similar properties. Results indicated that lighter resins can be obtained from sacha inchi oil, whereas pentaerythritol increases viscosity and thermal stability, and retards drying time of fatty-acid based alkyd resins. |
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Keywords: | Alkyd Curing Fatty acid QCM Sacha inchi |
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