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The study presented in this paper focuses upon the preparation, characterization, and properties of novel epoxidized natural rubber/functionalized SiO 2  nanocomposites (ENR/f-SiO 2  NCs) through the incorporation of surface-functionalized silica nanoparticles (f-SiO 2  NPs). Initially, ENR latex (epoxide content of 38%) as a matrix modifier was produced by epoxidation of natural rubber using in situ formed performic acid by mixing formic acid with hydrogen peroxide at 40°C for 24 hours. In order to prevent accumulation and obtain homogeneous dispersion of SiO 2  NPs into the ENR latex, 3‐aminopropyltriethoxysilane (APS) was grafted onto the silica surface to form f-SiO 2  nanoparticles. Then, f-SiO 2  nanoparticles with various contents (0, 5, 10, 15, 20, and 25 wt.%) were embedded into the ENR matrix by ultrasonication technique for the fabrication of ENR/f-SiO 2  NCs. The effect of f-SiO 2  on the structural, morphological, and thermal properties of ENR was studied by infrared spectroscopy (IR), scanning electron microscopy (SEM), thermo-gravimetric analyses (TGA), x-ray diffraction (XRD).

Fabrication and evaluation of properties of modified epoxidized natural rubber hybrid films by the incorporation of amine‐functionalized nanosilica