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The aim of the study was to determine the properties of pulp and paper produced from wheat stubble (Triticum aestivum L.), using soda-oxygen-sodium borohydride (NaBH4) cooking method. Whole wheat straw (Triticum aestivum L.) was also used for comparison with stubbles. The morphological and chemical properties of the raw materials were investigated. The results showed that stubble had high holocellulose, cellulose, and alpha-cellulose contents and low lignin content. Fiber length, fiber width, lumen diameter, and cell wall thickness were measured in order to determine suitability of the fibers for pulp and paper production. The values were used to calculate fiber parameters. The effects of these parameters on paper strength were also discussed. The effect of NaBH4 on the yield and chemical, physical, and optical properties of pulp and paper were investigated. The addition of NaBH4 increased pulp yield by 4.1 %, and improved the physical and optical properties of the pulp. The physical and optical properties of the stubble pulp were better than those of whole wheat straw pulp. It was concluded that these characteristics demonstrate the suitability of wheat stubbles for pulp and paper production.Cilj istraživanja bio je odrediti svojstva celuloze i papira proizvedenih od strnjike pšenice (Triticum aestivum L.) metodom kuhanja s dodatkom soda-kisik-natrijborohidrida (NaBH4). Radi usporedbe, određena su i svojstva celuloze i papira izrađenih od slame pšenice (Triticum aestivum L.). Određena su i analizirana morfološka i kemijska svojstva istraživanih sirovina. Rezultati istraživanja pokazali su da strnjika pšenice ima visok sadržaj holoceluloze, celuloze i α-celuloze te nizak sadržaj lignina. Radi utvrđivanja prikladnosti vlakanaca za proizvodnju celuloze i papira, izmjereni su duljina vlakanaca, širina vlakanaca, promjer pora i debljina stanične stijenke. Dobivene su vrijednosti iskorištene za izračun parametara vlakanaca. Također je analiziran utjecaj tih parametara na čvrstoću papira. Istražen je utjecaj NaBH4 na prinos celuloze te na kemijska, fizikalna i optička svojstva celuloze i papira. Dodatak NaBH4 povećao je prinos celuloze za 4,1 % i poboljšao fi zikalna i optička svojstva celuloze. Fizikalna i optička svojstva celuloze izrađene od strnjike pšenice bila su bolja od svojstava celuloze proizvedene od pšenične slame. Zaključeno je da svojstva celuloze proizvedene od strnjike pšenice potvrđuju pogodnost te sirovine za proizvodnju celuloze i papira

Evaluation of Common Wheat Stubbles (Triticum aestivum L.) for Pulp and Paper Production