The United States had been the world’s leading producer of paper until it was overtaken by China in 2009. The paper industry is dominated by North American, Northern European and East Asian countries. Paper is discovered by the Chinese 2000 years ago, it has been used ever since as a communication medium. Paper is always around with people and paper is actually documenting the world. It plays a vital role as a passport to knowledge, a storage medium, a persuasive tool and an entertaining art form. Paper is a sustainable resource and permanent document. It is the universal medium on which to chronicle every day history which carries the past. Papermaking today is a large, capital-intensive industry, characterized by high speed machines and complex systems of control for manufacture. Papermaking is produced through several processes. As elaborated by Adanur (1997), there are fiber supply, kraft pulping, mechanical pulping, bleaching, preparation paper making, paper is formed (refer to Figure 1 in Appendix 1).
Firstly, the fiber is harvested from timberland. In general, harvesting during the dormancy yields the most papermaking fiber. The collection of fiber supply originates from three main sources of plant fiber used in papermaking: wood chips, sawdust and old corrugated containers. During this stage, paper industry converts cellulose fiber into pulps. About 95% of fiber is extracted from the wood which is then reduced to fiber by mechanical means, the balance are from waste paper and a small quantity of sawdust and old corrugated containers which are required to process to obtain individual fiber for papermaking (Minnes, 2013).
The second step in papermaking is kraft pulping. The production of chemical pulp is predominated for kr...
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http://individual.utoronto.ca/abdel_rahman/paper/fpmp.html
This invention was a change to the Chinese because paper was invented in China around 105 CE. So the Chinese have paper and now it allowed an easy way for people to communicate. It caused a change in their culture because with paper they can now pass down culture easier than before. Before its invention the writing surfaces that were used were, bones, tortoise shells, and bamboo slips. But as the Chinese civilization started to grow they proved to themselves that these writing surfaces won’t work because of the bulk and weight.
The Merode Altarpiece is a triptych painting that represents the Annunciation of the Virgin Mary. This work displays the main characteristics of the Northern Late Gothic period. There is so much detail in this work of art. Campin utilizes many symbols in this altarpiec. The setting of the painting is in a Flemish middle class house. The Annunciation theme is being depicted in the central panel. A scene of Saint Joseph at work as a carpenter occupies the right-hand panel. The portraits of the donors are depicted in the left hand panel. Campin failed to understand the scientific perspective. To illustrate, there is no focal point in the painting and the table looks tilted. Campin used no aerial perspective. To illustrate, the background is still very crisp when seen from a distance. The most important aspect of the painting is the symbolism. For example, the lilies represent Mary's purity, the candle represents the Holy Spirit, even the mouse traps represent trapping evil. Campin also made use of bright, rich colors. In the central panel, the drapery of the figures are filled with colors of red and white. Campin has also made a good use of illusion of the space by making the town seem to be far away by distance by making them appear blurry. Furthermore, Campin has created figures that are not in proper proportion. To illustrate, the figure’s head is small and the bodies are big and it seems that if they get will hit their head if they get up. They look very unrealistic. Although they are not in proportion, the figures seem to have very sharp edges. The figures also look very stiff and rigid. In Merode Altarpiece, the light is arbitrary and the figures do not cast any...
The papermaking process begins with pulp. Pulp is cellulosic fibrous material extracted from cellulosic fiber from wood. Glatfelter uses the Kraft Process to make both hardwood and softwood pulps. Hardwood pulps are taken from oaks, beeches, poplars, birches and eucalyptus tress. They have short fibre of average length of 1 millimeter. The primary purpose of hardwoods is for the paper to achieve bulkiness, smoothness and opacity. Softwood on the other hand is taken from pine and spruce with long fibre averaging 3 millimeters, it provides addition strength to paper. Both softwood and hardwood are produce independently of each other and are mixed end at desire ratio in the paper plant. The process starts from wood chips. Trees are chipped to make wood chips from half an inch to an inch long and up to two fifth inches thick. The chips are feed into a digester, which with cooking liquor would create a chemical reaction, which delignificate the wood. The cooking liquor is composed of white and black liquor. White liquor is composed of mainly sodium hy...
This new technology is not without its shortcomings. First, the printing press used limited materials. Next, as Mumford notes, the advent of print led calligraphers and manuscript copyists out of work. Furthermore, as Graff finds, it created “typographical fixity”—material once printed cannot be changed. Finally, mass production was dependent and limited to large markets (Mumford, 95)....
The lignin located in the secondary wall of hardwood fibers has a high constant of syrigly unites whereas larger amounts of guaiacyl unites are present in the middle lamella lignin. The vessels in birch seem to contain only guaiacyl, lignin, whereas syrigyl lignin predominates in parenchyma cell.
The American Civil War helped to save the nation by rejoining Union Confederate and as result of the Emancipation Proclamation, most African American slaves were declared freed men. However, during the American Reconstruction, the lack of political unity was still very apparent as the South saw Reconstruction as being defeated humiliatingly and thus sought vengeance through the slaves it had lose. Although many slaves did receive their freedom, Reconstruction caused an increase in the white supremacy groups such as the Ku Klux Klan and laws such black codes/ Jim Crow laws/ sharecropping, which limited the rights freed slaves had. This unfortunately caused many of the freed slaves to be only marginally better off than before the Civil War and to still be under white control even after the 13th, 14th, and 15th amendment. Having a president that was formerly a slave owner and opposed the rights of freed men as well a weak central government that was in a state of disorder thus caused a failure to put an end to segregation and integrate freed African Americans into society; instead they were seen as second class citizens that had limited rights and were still discriminated even more harshly by bitter Southerners.
Wood species can be divided into two groups: hardwood and softwood. Softwoods are gymnosperm trees, while hardwoods are angiosperm trees. (Stenius 2000). The composition and structure of wood are a masterpiece of evolutionary design, which enable trees to grow tall and live for many years. The wood structure also enables the trees to survive for strong natural forces such as wind and gravity and the structure even provides for an efficient transport of water from the roots to the crown. Wood is a complex biocomposite built up of cells whose own building blocks, the wood polymers and their ideal composition, give rise to a superior weight-to-strength ratio for the wood material. Wood is essentially composed of cellulose, hemicelluloses, lignin, and extractives. Each of these components contributes to fiber properties, which ultimately impact product properties. In different wood species, however, their relative composition varies greatly, and also the chemical composition of wood varies quantitatively among tree species. According to the results, the lignin content and functional group were determined separately. In addition, the chemical structure was not similar between softwood and hardwood. Lignin is one of the important chemical constituents of lignocellulosic materials in wood and it is one of the most abundant biopolymers in nature. The physical
The invention of the printing press was one of the most useful technologies in history because it helped spread ideas, produced books, and greatly improved the economy. Johannes Gutenberg, who was a German goldsmith, developed the printing press “in Mainz, Germany between 1446 and 1450” (Ditttmar, 1133). The printing press was made to print books, newspapers, and flyers. The machine was made from wood and was based off screw presses, that worked with inked movable type heads that allowed the paper to be quickly and efficiently pressed with letters. The type head was made by pouring lead-tin alloy into a hand mold, along a rectangular stalk.
This suspension was allowed to stand for 10 minutes, before being filtered, washed (water 2 x 10 mL) and air dried. The crude product was recrystallised from ethanol to yield a yellow solid 3. 26% yield (1.83 g); Elemental analysis for C12H17NO4: C: 54.918%, H: 6.704%, N: 5.122% (Theoretical: C: 60.24%, H: 7.16%, N: 5.85%, Loss:26.75%); Mr 239.2 g mol-1; ν/cm-1: 1259.48 (N-C), 1667.41 (C=C), 1688.41 (C=O), 2976.58 (C-H), 3265.02 (N-H); 1H-NMR (400 MHz, CDCl3), δ/ppm: 1.24 and 1.38 (dt, 3H, C-CH3, C12 and C15), 2.51 and 2.56 (ds, 6H, 2 x =C-CH3, C6 and C7), 4.31 (m, 4H, 2 x -CH2-, C11 and C14), 5.3 (s, 1H, N5-H); 13C-{1H}-NMR (400 MHz, CDCl3), δ/cm-1:11.98 (C6 and C7), 14.43 (C12 and C15), 59.50 and 60.29 (C11 and C14), 133.5 (C3), 117.5 (C1), 131.3 (C2), 138.6 (C4), 165.47 (C8 and C9) .
Paper in 20th-century civilization, is one of our most important industrial products. Books, magazines, and newspapers are printed on paper. Data from computers are usually printed on paper. Education, government and industry could not operate without printing and writing on paper. Paperboard (used in packaging), and absorbent papers (tissue and towelling) are other widely used paper products.
After 30 minutes, another 5 ml of acetic acid was added, followed by 1.5 g of NaClO2the following 30 minutes. These steps were repeated until a total of 6 g of NaClO2 was added. The mixture was heated for a further 30 minutes after the final sodium chlorite addition. The suspension was then cooled in an ice bath before being filtered using sintered glass crucible and rinsed with cold distilled water. A final wash was carried out using acetone. The crucible with holocellulose was air dried in an air-conditioned room until constant weight was achieved for further alpha-cellulose analysis. For hemicellulose determination, the oven-dry weight of cellulose was used for
Do you hate seeing litter on the streets, or seeing and smelling heaps of garbage sitting, and rotting away? Humans recycling more will help to reduce this. We throw many things that can be recycled. Recycling glass, plastics, paper, and metals will reduce solid waste dumped into the ecosystem daily. “96 percent of U.S. plastic, and 50 percent of its paper, goes into landfills. Mexico, not exactly a bastion of environmental awareness, recycles more glass than the U.S.” (Alice Horrigan 1). That’s 96 percent of the millions of tons of plastic, which will outlive most of us in a landfill that we could recycle and keep it out of our landfill. Paper is made from trees, if we recycle it, we can decrease our rate of ugly deforestation and the destruction of animal habitats. When paper gets to the landfill, it is guaranteed to get wet. The wetness and decomposition of paper atracts mold spores, which produce an odor and are potentially bad for your health. Also k...
Paper books will always have its special, irreplaceable place for certain readers, and therefore will always have its own market with its followers. The experience is always special. There are the unique qualities of paper, the feeling of weight of the paper book. Paper provides an intimacy of interaction that no other medium can provide. Moreover for some people, reading paper book had become one of the indispensable components of their...
Environmental health has been a very important issue to talk about internationally these days. We, human beings are leading the earth toward its edge unconsciously. We are using natural resource more than we give to the Mother Nature. Day by Day, people are aware of what damage they do the environment, but they do not care of fixing this damage. In a very simple step, the road of a better healthy environment will begin; recycling is the best idea that illustrate the previous point. To Andrew Roper, recycling is the conversion of waste products into new materials, such as waste paper that can be converts into new paper goods (n.d). There are many types of recycling, for example, there are glass, paper, metal, plastics, textiles and electronics recycling (Evans , 2011). This research will focus on recycling papers in the United Arab Emirates, the benefits or recycling and its effect on the environment, the difficulties of recycling, the process of recycling paper, and the finals products of recycling.
Under the agreement, Kimberly- Clark ensures that 100 percent of the fiber which is used in the products will be from environmentally responsible sources. It will increase use of recycled fiber. This will help reduce the destruction of our forests.