April 15th, 2010 | 
Author: 1. General Composition
Wood is physique primarily discover the following compounds (in % dry weight):
* cellulose 40-50%
* lignin: 16-25% in hardwood - 23-33% in softwood
* hemi-cellulose: 20-30% in hardwood - 15-20% in hardwood
* another compounds (water, resins,…) 5-30%
* minerals 0,1-3%
The actualised scheme of vegetation is formed by the fiberlike scheme of cellulose (and hemi-cellulose). Lignin forms the binding agent between these fiberlike structures.
2. Cellulose
Cellulose is one of the most abundant nonsynthetic compounds on earth. Not exclusive woody plants same trees are physique from it but also all another plants. Cotton fibres are made of cellulose, vegetation consists for most 50% discover of cellulose. One cellulose mote is a chain of thousands of glucose molecules. In it’s pure form it is a albescent fibre. Cellulose for paper creation is normally harvested from vegetation but some plants are a good maker as well. Cellulose is also used in the chemical industry as a basic touchable for the creation of synthetic products same tissues, coatings, explosives,… Cellulose is without a doubt one of the most important and varied products for the economy!
3. Lignine
Lignine is an nonsynthetic polymer, typically found in wood. Softwood contains more lignine as hardwood. It is physique from giant, 3-dimensional molecules of a complex composition. It is a dark compound that is a waste product from the paper industry. 4. Hemi-cellulose Hemi-cellulose is intimately related to cellulose. They are both structures physique from glucose. But hemi-cellulose contains also another types of sugar molecules in its structures. The fibers are also shorter then those of cellulose, exclusive a few hundreds of sugar molecules. Hard vegetation contains more hemi-cellulose then softwood.
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