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Physical characteristics and chemical properties of hemp and kenaf.

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.

Kenaf and Hemp? Yes, please! 
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Kenaf and hemp physical and chemical characteristics

Physical and chemical characteristics of kenaf core and hemp core

Physical and common characteristics:
Commercial form chipboard
Anatomical origin central part of stem, woody-phloem sheaths
Morphological characteristics   flat, elongated particles of approximately 12 to 22 mm
Chemical characteristics KENAF CORE HEMP CORE
chemical composition    
water 7% - 10% 10%
cellulose 51% - 52% 45% - 52%
hemicellulose - 15% - 20%
lignin 17% 20% - 30%
ash 2,9% - 4,2% 4% - 5%
major elements    
nitrogen (N) 0,24% 0,4% - 1%
phosphorus (P) 0,06% 0,2% - 0,5% (P2O5)
potassium (K) 0,60% 0,96% - 1,50% (K2O)
sodium (Na) 0,23% 0,09%
calcium (Ca) 0,18% 0,89% - 1,4% (CaO)
magnesium (Mg) 0,17% 0,06% - 0,02% (MgO)
sulphur (S) 0,10% 0,16%
minor elements ppm ppm
manganese (Mn) 5 -
copper (Cu) 7 0,6
zinc (Zn) 14 -
boron (Bo) - 21
Chemical properties    
flammability flammable flammable
higher heat capacity 4.000 kca/kg 4.055 kcal/kg
lower heat capacity 3.675 kcal/kg 3.715 kcal/kg
Source: Muchow R.C. "The Growth and Culture of Kenaf (Hibiscus cannabinus L.) in Tropical Australia" - Proceeding of the Kenaf Conference: "Kenaf as a Potential Source of puIp in Australia", Brisbane, Australia 1981. Brochure and illustrative material "Aubiose" - France. Experimental Station for Fuels - S. Donato Milanese, Italy.
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