نتایج جستجو برای: recycled glass powder
تعداد نتایج: 127360 فیلتر نتایج به سال:
The bioactive glasses have been used in the medical field due to their wide spread benefits as implant coatings, bone substitutes and for treatment of dentine sensitivity. The purpose of this study was to incorporate zinc and fluoride in the bioactive glass for potential use in dentifrices as antibacterial and anticaries agents. A series of glass compositions based on SiO2, CaO, CaF2, MgO, and ...
This manuscript describes a synthesis of nanocrystalline TiOF2 film. The nanocrystalline TiOF2 becomes chemically attached to the surface of the glass slide. These films are robust and can be recycled as photocatalysts for the degradation of organic dyes and solvents. These films also have significant antibacterial properties upon irradiation.
Cement manufacturing industry is one of the carbon dioxide emitting sources besides deforestation and burning of fossil fuels. The global warming is caused by the emission of green house gases, such as CO2, to the atmosphere. Among the greenhouse gases,CO2 contributes about 65% of global warming. The global cement industry contributes about 7% of greenhouse gas emission to the earth’s atmospher...
It has been shown that polymer powders, in contrast to polymer and other films, are noncarcinogenic when imbedded subcutaneously. An important difference in response between films and powders appears to be the fibrous pocket formed around the im bedded film. It is in the lining cells of this pocket that the tumors originate. No such pocket arises with powders. It was suggested that powder might...
In this research, sol-gel bioactive glass in SiO2 �-P2O5 ? CaO - Na2O system using common nitrate precursors was investigated. Some parameters like water/alcohol/TEOS ratio, type of catalyst (acid or alkali) and temperature of heat treatment were also studied. Various precursors such as acetates, carbonates and chlorides were utilized to introduce Ca and Na in glass composition. Characterizatio...
Foods and pharmaceuticals materials are exposed to various environmental conditions during processing and while in storage; therefore, stability and quality are key attributes of concern. The properties of foods and pharmaceutical materials that define their quality are affected by conditions such as temperature, humidity and time. Glass transition is considered a key material property to under...
The interfacial characteristics between bioactive glass (45S5 Bioglass) surfaces and poly(α-hydroxyacid) melts have been assessed by direct wetting measurements. In particular, the wettability of Bioglass powder by poly(D,Llactide) (PDLLA) and poly(D,L-lactide-co-glycolide) (PLGA) was assessed by imbibition measurements. Additionally, the equilibrium contact angles of PDLLA and PLGA melts on a ...
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