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Open AccessArticle

Preparation of Renewable Bio-Polyols from Two Species of Colliguaja for Rigid Polyurethane Foams

1
Departamento de Biología y Química, Facultad de Ciencias Básicas, Universidad Católica del Maule, 3460000 Talca, Chile
2
Vicerrectoría de Investigación y Postgrado, Universidad Católica del Maule, 3460000 Talca, Chile
3
Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería Civil, Universidad Autónoma de Chile, 3460000 Sede Talca, Chile
4
Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, 4030000 Concepción, Chile
5
Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, 3460000 Talca, Chile
*
Author to whom correspondence should be addressed.
Materials 2018, 11(11), 2244; https://doi.org/10.3390/ma11112244
Received: 27 September 2018 / Revised: 5 November 2018 / Accepted: 8 November 2018 / Published: 11 November 2018
In this study, we investigated the potential of two non-edible oil extracts from seeds of Colliguaja integerrima (CIO) and Colliguaja salicifolia (CSO) to use as a renewable source for polyols and, eventually, polyurethane foams or biodiesel. For this purpose, two novel polyols from the aforementioned oils were obtained in a one-single step reaction using a mixture of hydrogen peroxide and acetic acid. The polyol derivatives obtained from the two studied oils were characterized by spectral (FTIR, 1H NMR, and 13C NMR), physicochemical (e.g., chromatographic analysis, acid value, oxidizability values, iodine value, peroxide value, saponification number, kinematic viscosity, density, theorical molecular weight, hydroxyl number, and hydroxyl functionality) and thermal (TGA) analyses according to standard methods. Physicochemical results revealed that all parameters, with the exception of the iodine value, were higher for bio-polyols (CSP and CIP) compared to the starting oils. The NMR, TGA, and FTIR analyses demonstrated the formation of polyols. Finally, the OH functionality values for CIP and CSP were 4.50 and 5.00, respectively. This result indicated the possible used of CIP and CSP as a raw material for the preparation of polyurethane rigid foams. View Full-Text
Keywords: Colliguaja integerrima; Colliguaja salicifolia; vegetable oil; bio-polyol; renewable resources Colliguaja integerrima; Colliguaja salicifolia; vegetable oil; bio-polyol; renewable resources
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MDPI and ACS Style

Abril-Milán, D.; Valdés, O.; Mirabal-Gallardo, Y.; F. de la Torre, A.; Bustamante, C.; Contreras, J. Preparation of Renewable Bio-Polyols from Two Species of Colliguaja for Rigid Polyurethane Foams. Materials 2018, 11, 2244.

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