I 2018

The use of the sol-gel method in the modification of ceramic materials with silver nanoparticles
This paper presents a review of the literature on the properties of silver nanoparticles (nano-Ag). Properties that are beneficial from the point of view of the intended applications have been described in detail, as well as undesired properties that increase the risk associated with the cytotoxicity and ecotoxicity of nano-Ag. A review of the literature concerning the modification of nano-Ag with metal oxides was also presented. Various methods for the production of nanomaterials from this group, as well as multi-component systems of bioglass, have been described in a comprehensive way. It was shown that the sol-gel method is not only not very complicated from a technological point of view, but also very flexible, through the possibility of using different types of ceramic precursors and a wide range of conditions of the processes. Data indicate that modifications of Ag with alumina particles using the sol-gel method lead to the production of interesting biological properties, often significantly different compared to free Ag nanoparticles. However, it is still difficult to control the final product morphology and the repeatability of the sol-gel processes because of the phenomenon of diffusion and mass transport often results in the size increase of the produced particles as well as the formation of agglomerates.
Anita Rozmysłowska M.Sc. Eng.

Diversity of chemical composition in components used in glass making according to Theophilus Presbyter
Attempts to reconstruct medieval technologies and archaeological finds are difficult and problematic. Differences between local environments influence on chemical composition of raw wood materials and ancient books are partially incomplete – from our point of view. Various materials used for medieval glassmaking (according to Theophilus Presbyter from 11–12th century) were collected and analysed. Attempts to obtain potasic ash glass in laboratory were made.
Jarosław Michałek M.Sc.

Uranium in historical glass
The paper discusses selected issues related to an occurrence of uranium in historical glass, such as a natural occurrence of uranium in glass, history and selected properties of uranium glass as well as radioactivity of historical glasses with a particular attention to uranium glasses.
Jerzy J. Kunicki-Goldfinger Ph.D.

Application of molecular dynamics in examination of glasses
Application of molecular dynamics in examination of glasses Molecular dynamics MD is one of computer simulation methods of multiatomic or multimolecular systems. It allows to examination of structure and properties both crystalline and amorphous materials. This technique consists of the numerical solution of the classical equation of motion. It complements not only experimental methods but also it is tool make possible examination of material structure on the unavailable level for conventional methods. In order to introduce to molecular dynamics, the simulations of two glasses 80SiO2-20Na2O and 85SiO2-15Na2O [%mol] were performed. Obtained results corresponds well to the actual state of knowledge. Performed simulation testify that this technique is a very useful to examine glass structure. Using this method, it is possible to predict influence of modifiers on glass network, it’s make possible indication research direction and optimization of chemical composition.
Paweł Goj M.Sc. Eng.