Amendment the physicochemical properties of polycarbonate/polybutylene terephthalate blend by gamma-ray irradiation dose
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Amendment the physicochemical properties of polycarbonate/polybutylene terephthalate blend by gamma‑ray irradiation doses M. F. Zaki1 · R. M. Radwan2,3 · A. M. Rashad4,5 Received: 31 March 2020 / Revised: 21 August 2020 / Accepted: 6 November 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract In this study, blend of polycarbonate (PC)/polybutylene terephthalate thin films was used. This blend belongs to the class of polymeric solid-state nuclear track detectors. Blend samples were exposed to gamma-rays with different doses (55–355 kGy). The compositional changes, the changes of optical properties, the electrical parameters changes and surface morphology in the gamma irradiated samples were studied. Different techniques were used to study improving the physicochemical properties of the irradiated samples, such as Fourier transform infrared spectroscopy, UV–Visible spectroscopy, LCR Meter Bridge and scanning electron microscope, as well as, the roughness testing. Fourier transform infrared measurements exhibit that the degradation in the polymer chain occurs after irradiation with gamma-rays. This means that some functional groups are the most sensible groups to gamma-rays. UV–Visible spectra of the gamma exposed samples exhibited a shift in the absorbance edge toward the region of higher wavelength. This trend reflects a decrease in the band gap energy, which leads to an increase in the electrical conductivity of the samples. The outcomes of dielectric loss and dielectric constant are sensible parameters for whole frequency range to the changes in the structural and optical behaviors as a result to gamma irradiation. Additionally, the surface changes were discussed. Keywords FTIR spectroscopy · UV–visible spectroscopy · Electrical measurements · Surface morphology · Gamma-rays · PC/PBT
Introduction It is well known that the polymeric materials have an important role in our life and it plays a pivotal role in a development of human life. In recent decades, polymeric materials displayed special importance due to their potential application * M. F. Zaki [email protected] Extended author information available on the last page of the article
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in many areas of science such as micro-electronics design, space science, nuclear science and radiation detection [1–3]. PC/PBT is a blend of unities the eminent properties of polycarbonate (PC) and polybutylene terephthalate (PBT) to award a new material of Makro-blend. It is a family of materials ultra-tough enough for several applications in mechanical, medical, electrical, electronic devices and a whole lot more [4]. This Makro-blend is characterized by high toughness, good chemical resistance of many lubricants, solvents and cleaning agents [5]. Furthermore, the reduction of susceptibility to stress cracking, great paint-ability and low moisture uptake is characterized [6–8]. The properties of polycarbonate and polybutylene terephthalate are combined to form a new grade blend. This blend is characterized
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