Study the effect of the incorporation of silicon dioxide nanoparticles on improved performance of carboxymethyl cellulose physical characteristics

By the process of solution casting with various proportions of SiO2NPs (0, 1, 3, 5, 7 and 9) wt.%, nanocomposites were prepared. The optical and structural properties of nanocomposites of CMC/SiO2 were studied. The result of experimental analysis of XRD have well demonstrated that increasing the content of SiO2NPs in the system leads to a widening of the diffraction peak as well as a decrease in the broad-peak intensity of CMC/SiO2 nanocomposites. Scanning electron microscopy (SEM) of CMC/SiO2 nanocomposite membranes shows clusters of distributed nanoparticles that are densely dispersed on the surface due to the happening of growth mechanism a homogeneous. From the FTIR measurements, no chemical interaction between the nanoparticles and the polymer was observed. The optical properties of CMC/SiO2 nanocomposites were measured in wavelength range (200–900) nm. Experimental studies have shown that the absorbance, absorption coefficient, extinction coefficient, refractive index, real and imaginary dielectric constant increase with the increase in the proportion of SiO2 in the nanocomposites. The energy gap and transmittance of CMC/SiO2 nanocomposites are reduced with the increase in the proportion of SiO2NPs.