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Hybrid films based on hydroxylated castor oil and titanium(IV) isopropoxide

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Abstract

Novel organic–inorganic hybrid films were synthesized by the reaction of hydroxylated castor oil (HCO) with titanium(IV) isopropoxide (TIP) in which the mass proportions of organic to inorganic precursor varied from 95:5 to 85:15. Films were pre-cured at room temperature under an inert atmosphere and subsequently submitted to thermal curing. The macro- and microscopic properties of the films, including adhesion, hardness, microstructure (SEM and AFM) and thermal properties, were determined as a function of the proportion of HCO to TIP. Morphologic studies showed that the hybrid films were microscopically homogeneous. The hardness and tensile strength of the films increased, with increased concentration of inorganic precursor. All of the films exhibited good adhesion to an aluminum surface.

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Acknowledgments

Financial support from Conselho Nacional de Pesquisa/Recursos Humanos em Áreas Emergentes and the provision of a graduate scientific grant to Denise Maria Bechi and an undergraduate scientific grant to Nelson Beuter Junior are gratefully acknowledged.

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Authors and Affiliations

  1. Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Bento Gonçalves 9500, Porto Alegre, RS, 91501-970, Brazil

    Márcia Martinelli, Maria A. de Luca & Denize M. Bechi

  2. Bioplus Desenvolvimento Biotecnológico Ltda, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Bento Gonçalves 9500, Porto Alegre, RS, 91501-970, Brazil

    Sydnei Mitidieri

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  1. Márcia Martinelli
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  2. Maria A. de Luca
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  3. Denize M. Bechi
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  4. Sydnei Mitidieri
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Correspondence to Márcia Martinelli.

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Martinelli, M., de Luca, M.A., Bechi, D.M. et al. Hybrid films based on hydroxylated castor oil and titanium(IV) isopropoxide. J Sol-Gel Sci Technol 52, 202–209 (2009). https://doi.org/10.1007/s10971-009-2044-9

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  • DOI: https://doi.org/10.1007/s10971-009-2044-9

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