Structural and optical analysis of gamma-induced modification in polycarbonate nuclear track detector

Abstract

Makrofol BL 6-2 films were irradiated with gamma-doses from 45 kGy to 225 kGy. FTIR, surface roughness, UV/Vis and photoluminescence (PL) spectrometers were used to study the change in structure and optical properties of irradiated films. The FTIR spectra exhibit that the band intensities of chemical bonds of irradiated-films are affected by irradiation according to the value of gamma dose. An enhancement of the surface roughness parameters was observed in the irradiated-films. UV/Vis spectra showed that the optical absorption of irradiated films is shifted toward the lower photon energies with an increase in gamma-doses. This shift was associated with the decrease in energy gap. The obtained results of optical parameters are modified after irradiation. The PL results confirm that the photoemission property is modified by gamma-irradiation. The acquired results can help in modifying and modeling the properties of such irradiated polycarbonate films for their use in industrial and radiation dosimetric applications.

Impact of Mn–Ni spinal ferrite nanoparticles on the structural, morphological, surface roughness, and optical parameters of polyvinyl alcohol for optoelectronic applications

“…This result was confirmed by measuring the roughness parameters using a roughness tester, which works by a sensor moving on the film surface and recording the roughness profile for polymer films. The surface parameters are calculated as follows, 35 R z = R p + R v where L is evaluation length, Z ( x ) is the ordinate of the roughness profile, R a is the arithmetic mean height, R q is the root mean square average of the profile heights, R p is the maximum peak height, R v is the maximum valley depth, and R z is the average maximum height. The roughness curves for all polymer films are illustrated in Fig.…”

“…This result was confirmed by measuring the roughness parameters using a roughness tester, which works by a sensor moving on the film surface and recording the roughness profile for polymer films. The surface parameters are calculated as follows,35…”

Gamma rays induced modifications in the structural, optical and photoemission properties of PVA/TiO2 nanocomposite films

“…These alterations in the fluorescence emission with gamma irradiation allow for using the modified nanocomposite in industrial applications. Finally, the increase in the yields of luminescence intensity can be attributable to the degradation of the polymer chain, as a consequence of the formation of radiated vacancies in the polymer matrices and the disruption of the H-bonds into yield single-stranded structures [3,52]. This phenomenon is correlated with hyperchromic effects.…”

“…The importance of polymeric materials is growing given their versatility and ability to meet a variety of different application requirements. This can be attributed to their lightweight, high-quality mechanical strength, and optical properties [1], such as polycarbonate polymeric material that has a light transmission 80%, tensile strength 60 MPa, elongation 100%, and Young's modulus 2100 MPa [2,3]. Moreover, polymers can be a good host material for metal and/ or semiconductor nanoparticles, as they can yield novel properties in the incorporated material.…”

Improving photoluminescence, optical and electrical characteristics of PMMA films with gamma irradiation

“…(Allayarov et al 2021;Guenther et al 2002;). Furthermore, the breakdown of chemical bonds and the generation of very energetic electrons as a result of the action of gamma-irradiation has a significant impact on the morphological, optical, and structural properties of polymeric materials and polymer composition (Soliman et al 2021). These processes lead to defects within the polymer chain backbone, which are responsible for the altered optical, electrical, mechanical and structural properties of irradiated polymer films, as well as changes in colour (Zaki et al 2020a;Zaki et al 2020b;Zaki et al 2015).…”