Abstract
Electron beam modification of carbon black (N220) and carbon-silica dual phase filler has been carried out at room temperature. The increase in oxygen to carbon ratio (O/C) determined by using Electron spectroscopy for chemical analysis (ESCA) is observed. Fourier transform infra-red spectroscopy (FT-IR) studies detect a new peak at 801 cm−1 upon electron beam irradiation, which is due to Si-C stretching in the case of modified dual phase fillers. The absence of the peak at 3400 cm−1 and the presence of the peak at 1720 cm−1 due to aliphatic ester stretching confirm the presence of trimethylol propane triacrylate (TMPTA) on the surface. Similarly, the absence of peak band at 3400 cm−1 confirms chemical interaction of triethoxysilylpropyl tetrasulphide (Si-69). A decrease in dispersive component (γsd) and an increase in polar component (γsp) of the surface energy corroborate surface oxidation.
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