engleski

Chemical composition of triticale straw as a paper fiber source

Wood as a raw material still holds a key position in papermaking industry. Deficiency of wood on world market can be felt already today but this problem will be even more pronounced for the further generations. Alternative sources of quality virgin fibres are necessary. Straw is particularly interesting because of its ready availability as a residue of a food corps. In this paper the experiments were conducted on hybrid agricultural crop between wheat and rye, known as triticale. Triticale straw was subjected to alkaline treatments in order to obtain fibres with larger share of cellulose. The first treatment type was straw cooking in caustic soda and the second type of treatment was consisted of straw soaking in caustic soda and then cooking in tap water. On triticale straw and dried isolated fibres determination of organic (cellulose, α-cellulose, lignin, solvent extractives, moisture) and inorganic compounds were made according TAPPI methods. ICP-MS analysis of straw and isolated fibres was done using digestion method (wet ashing method for organic matter destruction) and in those way 21 chemical elements was detected. Through chemical composition of isolated fibres, triticale straw as a potential raw material in papermaking was evaluated.

alkaline treatment; triticale straw; chemical composition; ICP-MS analysis

Ovaj rad je u sklopu SuZ financijske potpore istraživanju: “Slama pšenoraži kao izvor vlakanaca u proizvodnji novinskog papira” (voditeljica: izv. prof. dr. sc. Željka Barbarić-Mikočević).