Abstrakt
The organo-inorganic commercial binder Albertine F/1 (Hüttenes-Albertus) constituting the starch-aluminosilicate mixture was directed to
structural studies. The paper presents a detailed structural analysis of the binder before and after exposure to physical curing agents
(microwaves, high temperature) based on the results of infrared spectroscopy studies (FTIR). An analysis of structural changes taking
place in the binder system with the quartz matrix was also carried out. Based on the course of the obtained IR spectra, it was found that
during the exposure on physical agents there are structural changes within the hydroxyl groups in the polymeric starch chains and silanol
groups derived from aluminosilicate as well as in the quartz matrix (SiO2). The curing of the molding sand takes place due to the
evaporation of the solvent water and the formation of intramolecular and intermolecular cross-linking hydrogen bonds. Type and amount
of hydrogen bonds presence in cured molding sand have an impact on selected properties of molding sand. Results indicates that for
molding sand with Albertine F/1 during conventional heating a more extensive network of hydrogen bonds is created.
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