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Technical data and information about thermal insulation and soundproofing of kenaf natural fibers.

Kenaf and natural fibers for soundproofing, green building, thermal and acoustic insulation

Natural-fibers products for automotive components, soundproofing systems, thermal insulation, and green building, but above all natural fibers materials to safeguard the environment in which we live and that we want to be increasingly safer for our health and for a sustainable future.

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Approximate chemical composition of different non-woody species

  Chemical composition Fibre mean dimensions
Specie Raw cellulose Lignin Ash Length Width Thickness lumen Cell wall thickness
  (%) (%) (%) (mm) (µm) (µm) (µm)
Conifers              
Different 40 - 45 25 - 35 0,2 - 1 2,5 - 7 33 - 35 26 - 28 3,6
Pinus taeda 42 - 46 27 - 30 < 0,5 3,1 - 4,8 43 - 53 27,4 - 38,3 5,9 - 9,1
Hardwood              
Different 40 - 62 15 - 25 0,2 - 1 0,34 - 2,07 10-50 nov-26 02-apr
Eucalyptus grandis - - - 0,62 - 1,13 12 5 3,5
Textile plants (stems)              
Flax - 10,1 - 14,5 2,3 - 4,7 4,0 - 8,5 10 - 3 7 - -
Hemp              
      - Linden tree 67,7 12,4 5,1 5 - 40 25 - 50 - 12,5 - 25
      - Wood - - - 0,55 22 20 1,4
Kenaf              
      - Linden tree 53 - 57,4 5,9 - 9,3 5,5 - 8,3 3 - 4 18 - 24 7,3 8,6
      - Wood 51,2 17,4 2,9 - 4,2 0,5 - 1 22 - 29 0,8 2,9
Jute              
      - Linden tree - 20 - 24,7 - 2,1 - 2,6 17,6 - 23,8 4 - 11 6,2 - 7
      - Wood - - - 0,76 - 0,80 29 - 31,4 0,78 - 0,81 2,8 - 3,1
Crotolaria              
      - Linden tree 45 - 60 3,8 - 4,9 - 3,8 - 5,6 24 - 31 7 - 8 6 - 7
      - Wood - - - 0,5 - 0,7 23 - 32 8 - 12 6 - 7
Textile plants (leaves)              
Abaca - 8,8 - 10,5 1,1 - 1,6 3,5 - 6 17 - 21 9,5 5,7
Sisal 72 7,6 - 11 0,6 - 2,3 2,9 - 3,2 19 7,3 5,8 - 6
Sugarcane bagasse 48 - 58 18 - 22 2 - 5 0,3 - 3,4 9 - 45 16 5
Cereal straw              
Rice 43 - 47 13 18 0,5 - 2,5 4 - 15 3 3,5
Wheat 43 - 54 18 8 1,1 - 1,5 9 - 13 - -
Source: I.M. Wood "The utilisation of field crops and residues for pulp paper production" - CSIRO Commonwealth Bureau Pastures and Field Crops - July 1981, Vol. 34 n. 7.

Fonte: "Il kenaf, non solo una nuova materia prima cellulosica" - G. Mignoni

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