Michaela Filipi*, Miloslav Milichovsky
Department of Wood, Pulp a Paper, University of Pardubice, 532 10 Pardubice, Czech Republic
The both chemical and mechanical influences on super molecular structure of cellulose represented by oxidative-hydrolysis process of oxycellulose preparation and beating of bleached linters, were studied by the use of X-ray computed microtomography methods. In order to elucidate a role of fines, hydrocolloids and dissolved substances in this context, the beating experiments were conducted with and without separation of the ones. The samples of paper sheets were prepared by usually drainage papermaking methods and by drying the pulp slurries at Petri dishes as well as. The received results suggest an increase of crystalline portion of cellulose during beating of native cellulose followed by deep changes in their qualities in case of oxycellulose.
Keywords: cellulose, oxycellulose, X- Ray microtomography