Polytetrafluoroethane

Polytetrafluoro ethylene polytetrafluoroethylene History PTFL was accident entirelyy created by Roy Plunkett of kinetic chemic Company in 1938. Plunkett was trying to create a late refrigerant when the fluoroethene he was using polymerized in its storage container. It was patent by Kinetic Chemicals in 1941 and polytetrafluoroethylene became a registered brand in 1944. It was offset sold commercially in 1946. In 1950 DuPont had acquired adequate monomania of polytetrafluoroethylene and was producing over a one million million million pounds per year. http://www.nationmaster.com/ encyclopaedia/Polytetrafluoroethene About the Monomer: The monomer which makes up the polymer of polytetrafluoroethene, or Teflon, is called tetrafluoroethene. The monomer itself is composed of an ethene speck which has had all of its hydrogen atoms replaced by fluorine atoms. How Its do: Because Teflon is synthesized through the addition polymerization process, it undergoes the three stages; initiation, propagation, and termination. after(prenominal) all of the tetrafluoroethene has been created through a series of substitution reactions, its carbon-carbon biramous bail bond breaks open, reservation the monomer available to bond with ii other molecules. The peculiar electrons can now contact with some other Teflon monomer at either end if the broken stunt man bond. As the monomers link together, the chain propagates. The chain growth is terminate when any two unpaired electrons ends combine, forming a link betwixt the two chains. sensible Properties: Teflon is a white fast at mode temperature, with a density of about 2.2g/cm3 and a melting evidence of 327° C (620.6° F). The coefficient of friction is 0.1 or less, making it the second final of any cognise solid material. Teflons oppositeness to van der Waals forces means that is the only known surface to which a gecko cannot stick. Teflon is also used in insulating cables due to its glor ious dielectric properties. Intermolecular ! Forces: In the Teflon polymer, the absence of the carbon-hydrogen bonds and the bearing of the...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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