Some Chemical and Morphological Properties of Wheat Straw

In the present study, chemical and morphological properties of wheat straw fibers were investigated. Chemical properties including cellulose (49.78%), lignin (19.64%), ash (5.28%) and extractives (4.93%) contents were determined. Fiber length, diameter, lumen width and cell wall thickness were 1140, 19.32, 10.54 and 4.39 μm, respectively. The short length and thin-walled fibers may be expected to give relatively dense papers which are weak in tearing strength, but are superior in burst and tensile properties. Wheat straw has acceptable Runkel ratio and flexibility coefficient are in the range of nonwoods, respectively. In general, results based on chemical and morphological analysis indicated that wheat straw fibers are promising fibrous raw material for the paper production.

Cellulose % Lignin % Runkel ratio % Flexibility coefficient