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Diacryloyl Derivative of Mannitol - Synthesis and Application in Gelcasting of Al2O3-ZrO2 Composites

Wiecinska P., Kubica D., Pietrzak E., Sakowicz A., Prokurat N., Antosik A.

Archives of Metallurgy and Materials

2018

Vol. 63, iss. 2

859--865

The aim of research was the elaboration of the synthesis of new organic monomer applicable in gelcasting. The substance named 3,4-di-acryloyl-D-mannitol which contains two acryloyl groups and four hydroxyl groups in its molecule has been synthesized. The monomer has been then applied in the preparation of Al2O3-ZrO2 composites by gelcasting and subsequent sintering. Rheological properties of ceramic suspensions have been examined, as well as the properties of green and sintered bodies. SEM observations allowed to determine the distribution of zirconia grains in alumina matrix. Density, Vickers hardness and fracture toughness of ZTA composites have been measured. The new monomer, that is diacryloyl derivative of mannitol, is less sensitive to the oxygen inhibition than commonly used in gelcasting and commercially available 2-hydroxyethyl acrylate.

Best practice criteria for the development of biomass to energy plants : The MosTor Biomass Gasifier

Schmid C., Sakowicz A.

Systems : journal of transdisciplinary systems science

2004

Vol. 9, Sp. 2/2

613-621

Due to the different properties and extraction of biomass when compared to fossil fuels, the criteria for optimised power, heat or feedstock generation projects using different biomasses as fuel must differ substantially from those making use of coal, oil or gas. This is both true under technical and commercial aspects. This paper describes in which way a promising configuration of a potential standard biomass gasification system - called MosTor - has been derived by consideration of these criteria and the techniques available on the market for the different process steps.