- published: 24 Jan 2013
- views: 46425
Cellulose is an organic compound with the formula (C
6H
10O
5)
n, a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units.
Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes. Some species of bacteria secrete it to form biofilms. Cellulose is the most abundant organic polymer on Earth. The cellulose content of cotton fiber is 90%, that of wood is 40–50% and that of dried hemp is approximately 57%.
Cellulose is mainly used to produce paperboard and paper. Smaller quantities are converted into a wide variety of derivative products such as cellophane and rayon. Conversion of cellulose from energy crops into biofuels such as cellulosic ethanol is under investigation as an alternative fuel source. Cellulose for industrial use is mainly obtained from wood pulp and cotton.
Some animals, particularly ruminants and termites, can digest cellulose with the help of symbiotic micro-organisms that live in their guts, such as Trichonympha. In humans, cellulose acts as a hydrophilic bulking agent for feces and is often referred to as a "dietary fiber".
View how Specialised Cellulose (also known as dissolving wood pulp) is made in South Africa at Sappi’s Saiccor Mill in Umkomaas, south of Durban.
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Sale of machine tools for the production of cellulose fibers. http://grandenergo.by/ ultra/by@gmail.com : Cellulose fiber is a sort of organic fiber material generated by the natural wood being chemically treated. Because of water absorbing character of fiber, it can play the role of retaining water during the drying or curing of the parent material and thus improve the maintenance environment of the parent material and optimize the physical indicators of the parent material. The filamentous shape and toughness of fiber play a role of link in the parent material; therefore it can enhance the flexibility, thickening, anti - crack, and workability of the parent material in the dry - mixed mortar. Since wood fiber is a poor conductor of heat, it can insulate and preserve heat....
This video reviews how plants use carbon dioxide and water to make glucose, then string them together to make the polysaccharide, starch, which is ideal as an energy store for both plants and animals. It then shows how plants can use glucose to make a similar, but significantly different, polysaccharide called cellulose, which has very different properties to starch. These properties are examined, and appreciated for their various uses, both in nature and for humans.
http://www.drenergysaver.com | 1-888-225-6260 On episode 50 of the "On The Job" web series, Larry Janesky, owner and founder of Dr. Energy Saver, demonstrates how different types of insulation materials perform when exposed to fire. In Episode 51, he continues to compare insulation materials, by showing the differences in performance of two types of materials commonly used in attic and wall cavity insulation: fiberglass and cellulose. Fiberglass insulation is frequently used in the United States, but as this video will show, cellulose insulation outperforms fiberglass in the vast majority of applications. Cellulose insulation is entirely made of recycled paper: old newspapers, phone books, and paper stock. To make that shredded paper suitable as an insulation material, the cellulose ...
Created by the Great Lakes Bioenergy Research Center Visit http://www.glbrc.org for more information
Discussing the important detail of cellulose structure that often comes up in AS biology exams
Sie will es im Park, sie will es auf dem Fernsehturm,
sie will beim Shoppen poppen - und im Meer beim Sturm,
sie will es im Wald, sie will es im Chefbüro,
sie will Blaskonzert statt Oper - auf dem Bahnhofsklo.
Das Miststück will immer und überall, Hände hoch, das ist ein Überfall.
Doch so richtig nett ist es nur Bett, richtig nett ist es nur im Bett.
Ja, so richtig nett ist es nur im Bett, nur im Bett ist es so richtig nett.
Sie will es im Kino, sie will es auf dem Baggersee,
sie will beim Bummeln fummeln und im Sessellift, bei Schnee,
sie will es im Fahrstuhl, sie will es im Vatikan,
sie will den Sieg im Stellungskrieg - auf der Trabrennbahn.
Das Miststück will immer und überall, Hände hoch, das ist ein Überfall.
Doch so richtig nett ist es nur Bett, richtig nett ist es nur im Bett.
Ja, so richtig nett ist es nur im Bett, nur im Bett ist es so richtig nett.
Sand im Getriebe stört ganz massiv die Liebe,
bei Minusgraden geht die Härte baden,
ein nackter Rücken kann auch Mücken entzücken,
auf der Autobahn woll'n auch mal Autos fahr'n.
Doch so richtig nett ist es nur Bett, richtig nett ist es nur im Bett.
Ja, so richtig nett ist es nur im Bett, nur im Bett ist es so richtig nett.
Doch so richtig nett ist es nur Bett, richtig nett ist es nur im Bett.
Ja, so richtig nett ist es nur im Bett, nur im Bett ist es so richtig nett.