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Thermal and mechanical properties of fluoroaramid-silica nanocomposites

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Abstract

Fluoroaramids have been used as an attractive matrix polymer for composites due to their excellent mechanical and surface properties. Properties of these polymers can be improved further by dispersing silica in these matrices at a nano-scale via the sol–gel process. The role of interfacial interaction on the thermal and mechanical properties in such hybrids has been investigated in the present work. Two types of hybrids have been prepared; one using the aramid matrix with pendant alkoxy groups on the chain and other without. Silica network was developed by addition of tetraethoxysilane and its subsequent hydrolysis and condensation in the polymer matrix. Well dispersed inorganic domains of nanometer scale were obtained in case of matrix with pendant alkoxy groups on the chain, which showed larger increase in the α- and β-relaxation temperatures, storage modulus and thermal stability as compared to the matrix without alkoxy groups. The role of interfacial interaction, and its effect on properties on the fluoroaramid-silica hybrid composites has been discussed.

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Correspondence to Zahoor Ahmad.

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Abbas, S., Ahmad, Z. & Al-Sagheer, F. Thermal and mechanical properties of fluoroaramid-silica nanocomposites. J Sol-Gel Sci Technol 52, 210–218 (2009). https://doi.org/10.1007/s10971-009-2025-z

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  • DOI: https://doi.org/10.1007/s10971-009-2025-z

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