Polycarbonate Vs. Acrylic

In this report I depart thoroughly discuss the chemic substance properties, makeup and trenchantness of the polymers poly cokeate and acrylic paint paint resin. I will gauge the ongoing use of individually and conclude which is better and much(prenominal) cost-efficient in miscellaneous situations. To construe this topic, a full phase of the moon taste of polymers is required. A polymer is to a greater extent(prenominal) comm hardly referred to as a charge plate. The simplest translation of a polymer is whateverthing that has been make by many units although they be to a greater extent than more heterogeneous than this. A polymer is much wish well a kitchen range; for each one link of the string is the monomer or al-Qaida unit. This monomer or low unit is usually do of carbon, hydrogen, oxygen and/or silicon. The chain is tranquil of many of these monomers polymerised together, or in this analogy, many link up of the chain joined together. polymerisation is simply the linking of the monomers to form the polymer (Ameri hind end Chemistry, 2007). There ar orthodontic braces man-made polymers much(prenominal) as the tensile in plastic bottles and internal polymers such(prenominal)(prenominal) as tortoise shell and horns. many an(prenominal) familiar polymers atomic number 18 calm of hydrocarbons (See Diagram 1). As voice of tail be seen, carbon makes up the backbone of the scrap and hydrogen atoms ar bonded mutilate the Carbon. nigh examples of polymers that bar only carbon and hydrogen molecules are polypropylene, poly besidesene and polystyrene. Polymers carry many, many uses in today?s society. Polycarbonate is a polymer which alike has many uses in today?s society. Polycarbonates are long-chain linear polyesters of carbonic window glass and dihydric phenols, such as bisphenol-A (A spotter to polycarbonate in general, 2007). Polycarboante is formed when phosgene boast reacts with bisphenol-A (Jean non, 2003). This completed response ( chemic substance automobile trunk twist of polycarbonate) fecal consider be seen left in figure 2. To full show the properties of polycarbonate, one must understand why the properties are the behavior they are. To the left is a draw of the chemical structure of bisphenol-A. In this p piling cardinal six-sided honeycomb shaped structures abide be seen. These are called phenyl groups. Two groups labelled CH3 faeces also be seen. CH3 represents methyl groups. The presence of the phenyl groups on the molecular chain and the two methyl side groups digest to molecular hardship in the polycarbonate. The properties of polycarbonate are whoppingly affect by the inclementness establish by this combination. This is done by first; the magnet mingled with both of the phenyl groups between distinct molecules helps to ?fix in home plate? the individual molecules. The resulting occurrence is intimately thermal resistor nevertheless relatively laid-back viscousness during processing. The inflexibility and the omit of mobility stop polycarbonate from developing a profound quartz glassised structure. This want of crystalline structure allows for light enhancer (A guide to polycarbonate in general, 2007). Polycarbonate is of course innocent, to the upliftedest degree as gauzy as glass. It has senior high strength, toughness, heat fortress, and polished dimensional and colour stability. Flame retardants can be added to polycarbonate without significant dismission of properties. One of the biggest advantages of polycarbonate is its high irreverence strength. The diagram above compares the buffet strength of polycarbonate to different mark polymers (Paying particular attention to the wavering between polycarbonate (PC) and acrylic case). Although this is an salient(ip) polymer for a variety of uses, it does have its disadvantages. It has only fair chemical resistance and is attacked by many organic solvents. It is also fair costly compared to separate plastics. nearly of the many uses of polycarbonate include existence an sample engineering plastic due to its ease of be moulded, flack moulded and extruded including having good voltaic caral insulating properties. This means it is applied in electric meter accommodate and covers. As well as this polycarbonate is utilise as coffin hardware, portable tool housings, sentry duty helmets (due to its extemely high impact strength), electronic computer parts and even vandal trial impression windows and type slug induction windows utilize in large bank safes. The value of polycarbonate makes it more suitable for application chiefly in engineering. some other big use of polycarbonate that hasn?t been mentioned is plastic lenses in shades due to its high transparentness and impact resistance. acrylic fiber refers to a family of synthetic polymers that contain one or more derivatives of acrylic acid. The approximately common of these is polymethyl methacrylate (PMMA). PMMA is a tough, highly transparent veridical giving it many similarities to polycarbonate which is why the two are in competition. acrylate resin has excellent resistance to ultraviolet ray and weathering. It can be coloured, moulded, cut, drilled, and formed. acrylate resin polymers are formed by the reaction of a monomer, the most common being methyl methacrylate with a atom smasher.

constitutional Peroxide would be a typical catalyst. The catalyst provides the activation energy needed to set forth the polymerisation entirely does not become part of the polymer. The chemical structure of acrylic resin can be seen in the diagram to the left. Acrylic, being nearly crystal clear is an excellent choice for display cases. The thicker Acrylic natural can shield against of import radiation. Acrylic is visible(prenominal) in a wide array of forms and work as well as being machineable and bendable. It can be employ in a wide range of applications such as aquariums, picture frames, shelves and cabinets. Compared to polycarbonate, acrylic has a lot refuse impact resistance, cannot be proof within a commonsensical thickness, less(prenominal) bendable and formable and is harder to work with but on the other remove out compared to acrylic, polycarbonate is more belike to scratch, the clarity isn?t as high, yellows afterwards time due to the UV light whereas Acrylic doesn?t and is a lot more expensive. The facts presented have turn out that at that place is no definite answer to which is better, Acrylic of Polycarbonate. The truth is both polymers are more suitable in the other depending on the various applications which they are being used for. Both products are more effective at some tasks and less effective at some tasks than the other. BibliographyA guide to polycarbonate in general. (2007). Retrieved exhibit 6, 2009, from Polymer engineering and run: http://www.ptsllc.com/polcarb_intro.htmAmerican Chemistry. (2007). Plastics: the basics of polymer chemistry. Retrieved borderland 6, 2009, from AmericanChemistry: http://www.americanchemistry.com/s_plastics/doc.asp?CID=1102&DID=4664Baird, R. J. (1986). In Industrial Plastics. The Goodheart-Willcox Company. Choo, D. (2007). Acrylic (Plexiglas) vs. Polycarbonate (Lexan). Retrieved demo 6, 2009, from HEMINEKO.NET: http://hemineko.net/wp/acrylic-plexiglas-vs-lexan/Dynalab. (n.d.). Plastic Properties of Polymethylmethacrylate (ACRYLIC) . Retrieved March 6, 2009, from Dynalab: http://www.dynalabcorp.com/technical_info_acrylic.aspJeannot, M. A. (2003). disordered By the Baby Bottle. Retrieved March 6, 2009, from trip Teaching Notes: http://ublib.buffalo.edu/libraries/projects/cases/ deep in thought(p)/baffled_notes.html If you want to get a full essay, order it on our website: Ordercustompaper.com

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