Structural, characterization, and linear/nonlinear optical behavior of polyaniline/cellulose acetate composite films

The purpose of this study is on developing innovative physicochemical characteristics of flexible composite films for usage in outstanding performance optoelectronics products. This work illustrates the effects of conducting polyaniline (PANI) on the structural and optical characteristics of cellulose acetate (CA). The CA/PANI were successfully synthesized by solution fabrication casting method as demonstrated by XRD, EDX, SEM, and FTIR techniques. The XRD of CA/PANI films recorded the broadness and reduction of peaks intensity with increasing PANI. This is attributed to the intermolecular interactions of CA and PANI. The FTIR recorded a decrease in the intensities of CA/PANI, indicating the successful incorporation of PANI in CA. The surface morphology is investigated by SEM to record the homogenous distribution of PANI in CA. Moreover, the optical behavior of the samples was recorded by UV/Vis spectroscopy in wavelength 190 to 1150 nm. The absorption edge, band tail, band gap, and number of carbon cluster were estimated. By increase PANI content from 2 to 6%, the band gap is reduce from 5.17 to 4.02 eV and the band tail is changed from 0.84 to 3.96 eV. In addition, carbon clusters number is enhanced from 44 to 73. Moreover, the optical coefficients such coefficient of extinction, refractive index were computed. Furthermore, the Wemple/Di-Domenico is used to record the dispersion parameters of CA and CA/PANI films. The results indicate the PANI induced modifications on the linear/nonlinear characteristics of CA films for used these samples in optoelectronics applications.

Automated summary

The purpose of this study is to develop innovative physicochemical characteristics of flexible composite films for exceptional optoelectronics products. The effects of PANI on the structural and optical characteristics of CA were demonstrated through XRD, EDX, SEM, and FTIR techniques. The incorporation of PANI in CA resulted in reduced peak intensity and increased broadness in the XRD, indicating intermolecular interactions. FTIR confirmed the successful incorporation of PANI in CA. SEM showed the homogeneous distribution of PANI in CA. UV/Vis spectroscopy revealed changes in the absorption edge, band tail, band gap, and number of carbon clusters with increasing PANI content.