4. Cellulose


8 responses to “4. Cellulose

  • andrew lil saint maurice

    During the 1830s there was an elment discovered and the elment was cotton. African Americans were growing cotton in their fields and england got access to it. Also eruopeans and early americans got access to the cotton as well. Glucose is a type of sugar and it contains 6 carbon 12 hydrogen and 6 oxygen. It was formed into a sugar cane. Sugar cane are a very sweet substance. Like when glucose is in a striaght line, the OH molecules at carbon 1 is sometimes at the bottom and it forms this substance called “Alpha Glucose”. when the Oh molecules is at the top, it forms this substance called “Beta Glucose”.

  • Nyla Kashani

    Cellulose
    Cellulose is the main component of cotton. Cotton is a very important source around all parts of the world, which means cellulose has the same importance because it makes up over 90% of cotton. Cellulose does not only make a difference to cotton but it also is the major component of plant cell walls, and is the polymer of glucose. The reason for this is cellulose is a structural polysaccharide. A structural polysaccharide means it provides structural support to organisms, plants especially. Many of the traits that make cotton such as desirable fabric is its unique structure. Cellulose is shaped in long chains, packed tightly together, forming rigid, insoluble fiber of which plant cell walls are constructed. It was also discovered in 1830’s that cellulose can also be used as an explosive molecule. In 1845, Friedrich Schonbein discovered that when cellulose was combined with a concentrated form of nitric acid and then poured into water would yield guncotton. Cellulose also changed the photography and movie industry. Nitrocellulose compound was used to form some of the first films used in photography.

  • aaronmcclendonper8

    Cellulose
    Perhaps one of the most powerful molecules in history, Cellulose has made huge impacts in the fields of economic, social, and political importance in the form of cotton. Playing a huge role in the socio-economic status of the industrial Revolution, the slave trade, and the economy of the Southern U.S, Cotton is at least 90% cellulose, which is a polymer of glucose and a major component of plant cell walls. Cellulose is a structural polysaccharide, and as such has a huge role in the formation of plant cell walls, as opposed storage polysaccharides that store excess glucose for more trying times. Structural polysaccharides are B-glucose units, while those of storage polysaccharides are A-glucose units. Despite this difference in functions, the structures are very similar, and both have glucose units joined to each other by Carbons on glucose molecules when the removal of a water molecule occurs. Polymers like these are called condensation polymers.
    What made cotton so popular was the natural physical properties of cellulose. Cellulose chains pack tightly together and lay in bundles side by side, a characteristic which plays a huge role in the construction of plant cell walls. These bundles can be twisted together to form fibers visible to the naked eye. OH molecules that are not part f these bundles attract water molecules, which allow for a high absorbency of water in cotton and other cellulose products. This allows for the absorbency of heat evaporation from the skin.
    Chitin, another structural polysaccharide that also serves as a variation of cellulose is found in the shells of shellfish, and due to its containing of the N-acetyl molecule, can relieve the pain of arthritis stricken victims. Chitin and other structural polysaccharides were once easily digested by the human appendix, due to the diet of tree bark and other substances high in the chitin levels by ancient man, but since such practices have gone out of use, and the appendix grows smaller with each passing generation, structural polysaccharides, and their vast amounts of glucose units available remain off limits for most mammals. Digestion of cellulose however is still important in the digestive system, and aids in the removal of waste many rodents, horses, and insects have the ability to access the normally abundant sources of energy cellulose offers.
    Insects have other uses for the product of cellulose. Termites in particular utilize cellulose to help locate their colonies (tested by Bio’s termite lab in which termites would follow trails of pen marks due to the presence of cellulose in pen ink.) This is likely due to the high cellulose level in the typical termite diet, which includes dead wood and other plant like or plant based products.
    Cellulose can theoretically be converted via bacteria interaction into ethanol, a process currently under investigation as an alternative energy source. This is due to the fact that common non-food energy crops are composed of cellulose like switch grass, corn, and industrial hemp. Cellulose can be manipulated into forming water soluble bonding agents, painting tools and wood finishes, adhesives, and other household products. Cellulose also is a main component of paper and wood pulp, both plant based products commonly used today. Termites also convert cellulose into materials incredibly beneficial to the ecosystem.
    At least half of all organic carbons are tied up in cellulose, and its ready availability and abundance have entranced chemists and entrepreneurs alike for its monumental potential to be manipulated into new products. Nitrocellulose, for example is a highly combustible substance created when a nitro group replaces the H of OH in a number of of positions on the molecule. However, it would prove dangerous. In attempts to make it so nitrocellulose could replace gunpowder, the substance would prove extremely lethal unless kept dry and handled with great care, and without proper knowledge of it’s properties, factories would be destroyed in violent explosions due to nitrocellulose’s contact with nitric acid, which destabilized the combustible substance.
    Celluloid, another form of the nitrocellulose was a substance used as one of the first successful plastics and used in early forms of photography. Cellulose acetate would later replace celluloid for it’s lower flammability. Carbon disulfide, an alkaline solution that is one of the few substances that can dissolve cellulose, combines with the polysaccharide to form Cellulose xanthate. Given the name viscose for it’s viscous form, the substance is forced through holes and treated with acid to form a fabric known as Rayon.
    Cellulose held it’s most important role in the form of cotton, which was arguably the catalyst for both the industrial revolution and the Civil War, and even subsequent labor reform movements. Changing the face of England, the consumption and processing needs of cotton based products turned a formerly agriculturally based society into a urban focused, factory working, technology implementing country, attributing to the country’s subsequent rise to power. Cotton meanwhile. Also changed the face of the Southern states of America. Having been harvested since it’s colonial days, cotton was a lifesaving and wealth building cash crop, even named “the White Gold”. To meet the worlds increasing demand for the Southern economic staple, millions of slaves were bought and sold to help maintain and increase production of cotton plantations, rendering cotton as an important factor for many of the current day population of African-Americans. Even after the Civil War, harsh conditions of cotton picking African Americans and other poorly treated workers would lead to a call in social reform of the working environment.

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