This study evaluates the recycling potential of pulps made from nonwoods.We prepared five single species soda pulps of varying yields from bagasse and wheat straw in a laboratory.We also included a commercial bagasse chemimechanical pulp in the study.These pulps were subjected to cycles of sheet-making,drying and reslushing.The results of the study show that wheat straw pulps lose relatively little tensile strength and related properties as they are recycled.Bagasse pulps,however,have a low recycling potential,quite similar to that reported for wood pulps.The alpha,beta,and gamma cellulose contents of chemical pulps of wheat straw and bagasse did not change with the process of recycling.The high gamma celluloses in wheat straw chemical pulps seem to be responsible for their high recycling potential.During recycling,bagasse pulps lost significant amounts of fines,whereas fines were nearly completely retained in the wheat straw pulps.This may be because the wheat straw pulps fines have a high bonding potential.
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