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.