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Ceramer coatings from castor oil or epoxidized castor oil and tetraethoxysilane

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Journal of the American Oil Chemists' Society

Abstract

New inorganic-organic hybrids were synthesized through the reaction of castor oil (CO) or epoxidized castor oil (ECO) with tetraethoxysilane (TEOS). The mass proportions of ECO/TEOS varied from 90∶10 to 60∶40, and films of the material were thermally cured. An IR spectroscopy analysis was performed, and macro- and microscopic properties such as adhesion, hardness, swelling in toluene, microstructure (scanning electron microscopy), and T g were investigated as a function of the proportion of their inorganic-organic precursor. Morphologic studies showed that the hybrid films were homogeneous when lower proportions of the inorganic precursors were used. Hardness and tensile strength increased with TEOS concentration, whereas swelling in toluene decreased with TEOS concentration. Good adhesion was observed throughout the hybrid series.

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Authors and Affiliations

  1. Departmento de Química e Física, Universidade de Santa Cruz do Sul (UNISC), 96815-900, Santa Cruz do Sul, Rio Grande do Sul, Brazil

    Marco Flores Ferrão

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

    Maria Augusta de Luca, Márcia Martinelli, Marly Maldaner Jacobi & Patrícia Luíza Becker

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  1. Maria Augusta de Luca
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  2. Márcia Martinelli
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  3. Marly Maldaner Jacobi
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  4. Patrícia Luíza Becker
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  5. Marco Flores Ferrão
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Correspondence to Maria Augusta de Luca.

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de Luca, M.A., Martinelli, M., Jacobi, M.M. et al. Ceramer coatings from castor oil or epoxidized castor oil and tetraethoxysilane. J Amer Oil Chem Soc 83, 147–151 (2006). https://doi.org/10.1007/s11746-006-1187-x

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  • DOI: https://doi.org/10.1007/s11746-006-1187-x

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