Effect of gamma radiation on the structure and optical properties of polycarbonate-polybutylene terephthalate/silver nanocomposite films

Nouh, S. A.; Benthami, K.; Samy, R. M.; El-Hagg, A.A.

doi:10.1016/j.cplett.2020.137123

Cited by 22 publications

(6 citation statements)

References 28 publications

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“…Compared to the control group, where the highest value was in the infected patients with a concentration of 110 pg/ml, the current results in Figure (3) showed a significant increase in the concentration of interleukin-8 in the group of patients infected with the fungus T.rubrum. This result is consistent with the results (14). Table (5) shows the distribution of the mean IL-23 level in controls and patients with a probability less than 0.05. , and the respiratory burst, as directs cells to go toward the infection site, especially neutrophils but also other granulocytes.…”

Section: Dermatophytes Infection and Gendersupporting

confidence: 91%

Investigation of interleukin-8 from patients infected Trichophyton rubrum

Sadeq

Al.Oebady

2022

ijhs

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The most prevalent form of chronic dermatophytoses causing pathogenic fungus in humans is Trichophyton rubrum. Keratinocytes, the main epidermal cells, are crucial in local immune interactions because they represent the first line of defense against microbial assaults, skin In response to varied stimuli, keratinocytes express a wide range of receptors and create host defense peptides, cytokines, and chemokines, this immunological study's objective was to use an ELISA to determine the function of inflammatory interleukins (IL-8) in Trichophyton rubrum patients. The study included 30 patients with verified Trichophyton rubrum and 10individuals as a control group. Age, gender, the date of the surgery, the patient's occupation, their address, and the findings were all collected for every infected patient, the ELISA (Linked Immuno-sorbent Assay) technique was used to measure immune cells' cellular kinetics for secreting interleukin-8 were calculated And there was a significant increase in the level of significance for persons infected with interleukin-8 (p > 0.05), compared to control persons.

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Section: Dermatophytes Infection and Gendersupporting

confidence: 91%

Investigation of interleukin-8 from patients infected Trichophyton rubrum

Sadeq

Al.Oebady

2022

ijhs

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“…Ag NPs caught the researchers ' attention because of their suitable applications in the fields of electronics, materials science and medicine [26].The surface Plasmon resonance frequency of these nanoparticles, distinctive of noble metals having free electrons like Au and Ag size is responsible for their shape-dependent optical characteristics. This causes a distinctive absorption in the UV-visible spectrum [27]. The present work discusses the use of Ag NPs as reinforcing filler in PAM/PVA blend by using the casting technique.…”

Section: Introductionmentioning

confidence: 99%

Structural, thermal, optical and conductive properties of PAM/PVA polymer composite doped with Ag nanoparticles for electrochemical application

Ragab

Rajeh²

2020

J Mater Sci: Mater Electron

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In the present study, the chemical preparation of silver nanoparticles (Ag NPs) solution was achieved by decreasing silver salt via the use of sodium borohydride (NaBH 4). The particles appeared to have a crystalline nature through the XRD study, with a face-centered cubic (FCC) structure. The formation of silver nanoparticles (Ag NPs) was asserted by the UV, XRD and TEM. An absorption peak at around 430 nm was demonstrated through UV-visible spectrum of the aqueous medium which related to of Ag NPs. The solution casting method was used to prepare new nanocomposites films on the bases of polymer blend which related to of PAM-and PVA-doped with different wt% of Ag NPs. Various analytical techniques were used to characterize the prepared films. It was confirmed through the XRD analysis that there existed a complex formation between polymer blend and Ag NPs. A reduction in the value of the optical bandgap was displayed by UV-Vis with an increase in the concentration of Ag NPs. It was shown through the FTIR spectrum that there existed changes in the FTIR spectrum with dopant concentration indicating the interaction of dopant with the polymer blend. A great improvement in the thermal stability of the composites was proved through the TGA study with the loading of Ag NPs. The ionic conductivity at room temperature was improved by the doping of Ag NPs ions into the polymer blend system. This is attributed to the increase in mobile charge carriers and their mobility. The dielectric values in the studied frequency range indicate a strong dielectric dispersion which increases as the content of the Ag NPs increases. Consequently, these films can be suggested as a suitable application in optical devices and dielectric applications due to the observed improvement in optical properties and ac conductivity.

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“…The alternation of absorbance with γ dosage is attributable to the persuaded modification in the energy band owing to irradiation together with the Rayleigh scattering from the implanted 097802-3 CdSe NPs. [31] A higher absorption band appeared at close 280 nm-310 nm that decreased with increasing wavelength up to 800 nm. The reduction of absorbance with increasing wavelength is attributable to the n-π * transition C=O (carbonyl group) and π * -π * (phenyl group).…”

Section: Absorption Studymentioning

confidence: 95%

Gamma induced changes in Makrofol/CdSe nanocomposite films

et al. 2022

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In our present work, we applied ex-situ casting procedure to prepare a nanocomposite (NCP) from Makrofol polycarbonate (PC) and CdSe nanoparticles. The CdSe nanoparticles were prepared by thermolysis procedure in the presence of N2 gas flow. Rietveld refinement of x-ray data illustrated that the CdSe accustoms cubic zinc blend structure of a 6.057 Å lattice parameter and 2 nm typical grain size. Samples from the prepared NCP were exposed to γ dosages (20-250 kGy). The modifications induced in the NCP films owing to γ dosages have been studied. The γ irradiation (50-250 kGy) causes the crosslinks that reduces the optical bandgap from 4.15 to 3.81 eV; associated with an increase in dielectric parameters and refractive index. This is attributed to the increase of the mass fraction of the disordered regions as specified by XRD. The PC-CdSe NCP was found to have reaction to color modification which makes it suitable in saleable reproduction on printing press.

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Effect of gamma radiation on the structure and optical properties of polycarbonate-polybutylene terephthalate/silver nanocomposite films

Cited by 22 publications

References 28 publications

Investigation of interleukin-8 from patients infected Trichophyton rubrum

Investigation of interleukin-8 from patients infected Trichophyton rubrum

Structural, thermal, optical and conductive properties of PAM/PVA polymer composite doped with Ag nanoparticles for electrochemical application

Gamma induced changes in Makrofol/CdSe nanocomposite films

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