Sugar-based compounds as the additives of the future in colloidal processing of ceramics

Reference Presenter Authors
(Institution)
Abstract
13-018 Paulina Wiecinska Wiecinska, P.(Warsaw University of Technology, Faculty of Chemistry); Pietrzak, E.(Warsaw University of Technology, Faculty of Chemistry); Poterala, M.(Warsaw University of Technology, Faculty of Chemistry); Wieclaw-Midor, A.(Warsaw University of Technology, Faculty of Chemistry); Sugars (carbohydrates, saccharides) are believed to be the most abundant biomolecules on the planet. We find them as structural material in the cell walls of plants and bacteria, they play important roles in the lubrication of skeletal joints, they are the major component of our diet and finally they are structural components of nucleic acids (RNA and DNA). The chemistry of sugars is comprehensive and covers not only mono- di- oligo- and polysacchardies but also their derivatives such as sugar acids, sugar alcohols, deoxy-sugars and amino-sugars. 

In colloidal processing of ceramics sugars and sugar-based compounds are the very attractive alternative for commonly used organic additives, because most of them are renewable materials, non-toxic to human skin and have the positive influence on the rheological behavior and stability of slurries. Their influence on the properties of green and sintered bodies is also very beneficial. The series of sugar-based compounds are going to be discussed, e.g.: sugar acids (galacturonic and lactobionic acid) as highly effective deflocculants for nanopwoders, acryloyl derivatives of monosaccharides and sugar alcohols as organic monomers in gelcasting, polysaccharides as binders and L-ascorbic acid as an activator in radical polymerization in gelcasting. The multifunctionality of selected compounds as well as their thermal decomposition during sintering of ceramics will be also presented.
 
This work has been financially supported by the National Science Centre of Poland (Agreement No. UMO 2014/15/D/ST5/02574).
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