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Paper properties of grass and straw pulps1 A preliminary report based on some of the results presented here was given at the Industrial Corps and Products Seminar, Reims, France, April 22–24, 1996.1

Industrial Crops and Products
Publication Date
DOI: 10.1016/s0926-6690(97)10001-2
  • Non-Wood
  • Kraft
  • Ethanol-Enhanced Soda
  • Bisulphite
  • Acidic Ethanol
  • Paper Properties
  • Beating
  • Tear-Tensile Strength
  • Drainage Properties
  • Light Scattering
  • Sheet Density
  • Surface Roughness
  • Birch
  • Elephant Grass
  • Wheat Straw
  • Reed Canary Grass


Abstract Elephant grass, wheat straw and reed canary grass have been evaluated with regard to their paper properties after pulping according to four different cooking methods, namely conventional kraft, ethanol-enhanced soda, (ethanol–soda), conventional bisulphite (pH 4.5) and autocatalysed acidic ethanol (ethanol–water). Birch has been chosen as a short-fibre wood reference. Evaluated in general terms, the non-wood pulps were `weaker' than the birch pulps, especially in tear strength, and showed little response to beating. The choice of pulping method seems to be decisive for the tensile strength that can be obtained, while the choice of species seems to be decisive for the tear level that can be obtained. The emphasis of the evaluation is then put on properties deemed relevant for printing and writing grades of paper. A remarkably high specific light scattering coefficient at low surface roughness were found for wheat straw and elephant grass bisulphite pulps, unbeaten or at a low degree of beating.

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