Curing of phenolic resins modified with chestnut tannin extract

Authors

  • C. Peña,

    1. “Materials+Technologies” Group, Escuela Universitaria Politécnica, Departamento Ingeniería Química y Medio Ambiente, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Plaza Europa, 1, 20018 Donostia/San Sebastián, Spain
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  • M. D. Martin,

    1. “Materials+Technologies” Group, Escuela Universitaria Politécnica, Departamento Ingeniería Química y Medio Ambiente, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Plaza Europa, 1, 20018 Donostia/San Sebastián, Spain
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  • A. Tejado,

    1. “Materials+Technologies” Group, Escuela Universitaria Politécnica, Departamento Ingeniería Química y Medio Ambiente, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Plaza Europa, 1, 20018 Donostia/San Sebastián, Spain
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  • J. Labidi,

    1. “Materials+Technologies” Group, Escuela Universitaria Politécnica, Departamento Ingeniería Química y Medio Ambiente, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Plaza Europa, 1, 20018 Donostia/San Sebastián, Spain
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  • J. M. Echeverria,

    1. Bakelite Ibérica S.A., Ctra. Navarra, Epele 39, 20120 Hernani Guipúzcoa, Spain
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  • I. Mondragon

    Corresponding author
    1. “Materials+Technologies” Group, Escuela Universitaria Politécnica, Departamento Ingeniería Química y Medio Ambiente, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Plaza Europa, 1, 20018 Donostia/San Sebastián, Spain
    • “Materials+Technologies” Group, Escuela Universitaria Politécnica, Departamento Ingeniería Química y Medio Ambiente, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Plaza Europa, 1, 20018 Donostia/San Sebastián, Spain
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Abstract

Phenolic novolac resins have been modified with chestnut tannin for reduction of phenol content in resins. In this work, rheological and kinetic analysis of curing reactions of these resins with hexamethylenetetramine (hexamine) has been performed. Chemical structure of obtained materials has been analyzed and compared with that of nonmodified resins. Results reveal that cure reactions of resin modified with chestnut tannin are different when compared with nonmodified novolacs not only in the cure kinetics values but also in final chemical structure. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 2034–2039, 2006

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