Johnson, in Thermal Characterization Techniques, edited by P. Johari, in Molecular Dynamics and Relaxation Phenomena in Glasses, edited by Th. Periodical Report, The Chemical Society, London, 1977) Vol. Williams, Dielectric and Related Molecular Processes (Spec. All sixteen compositions retained their chemical and physical characteristics following sterilization. Contrastingly, K⁺ appears to stabilize B4 structures. These data suggest that Sr²⁺ cations cross-link the networks. Thermal analysis of the glasses revealed that SrO significantly increases the glass transition temperature while both SrO and K2O have comparable impacts on glass stability. Structural analysis showed that both K2O and SrO influenced the fraction of three- and four-fold coordinated boron groups independent of the cation. The effects of γ-radiation on the glass networks were also examined to determine the impact that sterilization may have on the glass properties. The analysis intended to establish the influence of K2O and SrO on the composition-structure-property relationships for borate glass networks. Sixteen borate glass compositions, modified with K2O and SrO, were established using a design of mixtures approach and were subjected to chemical and physical characterization (¹✛ MAS NMR, density, and glass transition temperature (Tg)). The role of CNSs in enhancing the functional properties of the host matrices. It summarizes the results obtained by researchers highlighting This review provides an overview of two principal synthesis techniques employed by researchers for the fabrication of these composites, i.e., melt-quenching and sol-gel processing. Although several studies have been conducted on the inclusion of CNSs in polymer matrices, inorganic systems have gained relatively less attention. Due to their impressive electrical, mechanical, optical, and thermal properties, the novel characteristics imparted to the glass system with their incorporation have opened up new horizons for the development of innovative nanocomposite materials that can be used in different fields such as energy storage devices, sensors, actuators, optics, laser technology. Further, Urbach energy values decrease with the increased sodium content, suggesting decreased defects concentration.Ĭarbon nanostructure (CNS)-based glass composites are an emerging area of research owing to the ability of these structures to dramatically alter the properties of The values of optical band gap (Eg1), estimated via HEM fitting of experimental data, show a similar trend as Eg values obtained from fitting experimental data with MDM, thus indicating the existence of hydrogen excitonic type optical transitions in the present glass system. The transmittance in the visible and infra-red region of the studied glass series is from 92 to 96 percent, and it increases with the increase in sodium content. Further, UV–vis spectra have been analyzed in light of Mott and Davis Model (MDM), Hydrogen Excitonic Model (HEM), and modified Urbach Energy Model. The vibrational spectra study suggests the formation of boroxol rings in samples with x = 10 and 20 at low wavenumber and reformation of boroxol rings at the expense of di-borate linkages with increasing sodium content at high wavenumber in glass samples with x = 30, 40 and 50. FTIR and Raman spectra analysis indicate that mainly and structural units constitute the glass network in the glass series understudy. Glass composition xNa2O.20ZnO.(80-x)B2O3 with x = 10, 20, 30, 40, and 50 was prepared using conventional melt-quenching technique, and their structural and optical properties have been studied.
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