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    • CommentAuthorqzz10011
    • CommentTimeSep 20th 2017
     
    <p>Wood is a complex organism, the main component of carbon accounted for about 44%, hydrogen accounted for about 6%, about 42.5% oxygen, and other 0.5% below the nitrogen and other<a href="http://wpcbalconyfloor.com/pvc-deck/160.html">plastic wood looking dog houses</a> elements of mineral elements of the following ash. (Mainly calcium, potassium, sodium, magnesium, iron and manganese). Wood also contains a small amount of sulfur, chlorine, silicon, phosphorus and other elements. The main components of dry wood are lignin, cellulose and hemicellulose. Cellulose is a glucose-derived crystalline polymer, accounting for about 41 to 43%.</p><p> Hemicellulose in the deciduous trees <a href="http://wpcbalconyfloor.com/pvc-deck/159.html">what is the difference between solid and hollow organs</a> accounted for about 20%, 30% in the coniferous trees, mainly by the five carbon sugar in an irregular way polymerization. Lignin accounted for 27% of deciduous trees and 23% of conifers. Lignin is hydrophobic due to its benzene ring.</p><p> Paper processing is <a href="http://wpcbalconyfloor.com/pvc-deck/158.html">playground fence singapore</a> the focus of the separation of cellulose and lignin, and then use cellulose to paper. Considering its chemical composition, the difference between hardwood and softwood is in the composition of lignin. Hardwood lignin is mainly derived from mustard alcohol and methotrexate, and cork lignin is mainly derived from methoxyphenols. Extracts Wood in addition to lignocellulose, there are many low molecular weight organic compounds, wood extracts are fatty acids, resin acid, wax and terpene. For example, cedar plants will release rosin to avoid pests. Wood extract can <a href="http://wpcbalconyfloor.com/">WPC Balcony Floor - Seven Trust</a> be used as oil rosin, turpentine and rosin.</p>
    • CommentAuthorvalexcos
    • CommentTimeJun 11th 2018
     
    • CommentAuthorvalexcos
    • CommentTimeJun 11th 2018
     
    • CommentAuthorvalexcos
    • CommentTimeJun 11th 2018
     
    • CommentAuthorvalexcos
    • CommentTimeJun 11th 2018
     
    • CommentAuthorvalexcos
    • CommentTimeJun 11th 2018
     
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