In the present research, variations of fiber length, fiber diameter, cell-wall thickness, lumen diameter,
Runkel ratio, flexibility coefficients and slenderness features of cotton stalks were investigated. Ten of cotton
stalks were selected in Varamin site-Iran and three parts were cut along longitudinal position (25%, 50% and
75%) from base to up of the stem. For fiber separation of cotton stem were used from Franklin method.
The analysis of variance indicated that the longitudinal position hadn’t significant effect on fiber properties
and morphological features of cotton stalks, whereas theses features along axial direction were decreased from
base to up of stems. The average of fiber length in the present study is more than other residues such as rice
and wheat residues and is less than bagasse stems. Results based on the biometry analysis indicated that
cotton stalks fibers is promising fibrous raw material for the paper production.
