Optical and Physical Properties for the Nanocomposite Poly(vinyl chloride) with Affected of Carbon Nanotube and Nano Carbon

In this paper, the new nanocomposite thin films of carbon nanotube (CNT) and nano carbon (CN) implanted in PVC matrix were produced by casting technique. The influence of nanomaterials (CNT+CN) was studied on the optical properties and structure of PVC nanocomposite thin films (PVC-CNT, PVC-CN, and PVC-CNT-CN) by utilizing a microscope, AFM device, and computerized diffused reflectance of UV-Visible. The energy gap, absorption coefficient, reflectance, extinction factor, refractive index, and urbach energy have been studied. The reflectance and transmittance of the nanocomposite thin films (PVC-CNT, PVC-CN, and PVC-CNT-CN) were decreased compared with blank PVC after being dispersed (CNT+CN) in the PVC matrix. The dielectric constant and conductivity of nanocomposite thin films also increased after adding nanomaterials (CNT+CN). The direct energy gap and indirect energy gap were decreased for the nanocomposite thin films (PVC-CNT, PVC-CN, and PVC-CNT-CN) compared with the energy gap of blank PVC, where, urbach energy of nanocomposite thin films (PVC-CNT, PVC-CN, and PVC-CNT-CN) increased after addition the nanomaterials (CNT+CN) to the PVC matrix. The SEM images were used to show the shape of carbon nanotube (CNT) and nano carbon (CN). The surface topography was tested by the AFM device and it found the roughness of the nanocomposite thin films (PVC-CNT, PVC-CN, and PVC-CNT-CN) were increased compared with the blank PVC. The application of nanocomposite thin films (PVC-CNT, PVC-CN, and PVC-CNT-CN) was used in many applications like optical clarity, high mechanical strength, and thermal gas barrier.