Cure kinetic of castor oil-based polyurethane

Authors

  • Andressa Cecília Milanese,

    Corresponding author
    1. UNESP-Univ Estadual Paulista, Department of Materials and Technology, Fatigue and Aeronautic Materials Research Group, Av Dr Ariberto Pereira da Cunha no.333, 12516-410, Guaratinguetá, São Paulo, Brazil
    • UNESP-Univ Estadual Paulista, Department of Materials and Technology, Fatigue and Aeronautic Materials Research Group, Av Dr Ariberto Pereira da Cunha no.333, 12516-410, Guaratinguetá, São Paulo, Brazil
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  • Maria Odila Hilário Cioffi,

    1. UNESP-Univ Estadual Paulista, Department of Materials and Technology, Fatigue and Aeronautic Materials Research Group, Av Dr Ariberto Pereira da Cunha no.333, 12516-410, Guaratinguetá, São Paulo, Brazil
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  • Herman Jacobus Cornelis Voorwald,

    1. UNESP-Univ Estadual Paulista, Department of Materials and Technology, Fatigue and Aeronautic Materials Research Group, Av Dr Ariberto Pereira da Cunha no.333, 12516-410, Guaratinguetá, São Paulo, Brazil
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  • Carlos Yujiro Shigue

    1. USP/EEL-São Paulo State University, Department of Materials Engineering, Lorena, São Paulo, Brazil
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Abstract

This research presents the kinetic studies on the cure reactions of a new material, castor oil-based polyurethane resin. Thermal analysis by isothermal differential scanning calorimetry was used, as a variety of factors affect its cure, including formulation and polymerization process. The kinetic reaction of this catalyzed system is described by nth order equation. Castor oil, a vegetable triglyceride, was reacted with methylene diphenyl 4,4′-diisocyanate to produce an elastomeric matrix. The objective of this research is thermal characterization of new polyurethane that is less aggressive to humans and environment; therefore, castor oil used on the synthesis is derived from a natural and renewable resource. The activation energy measured for the castor oil-based polyurethane resin studied in this work was about 56 kJ/mol. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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