PPT-POLYMERISATION

There are two types of polymerisation Addition condensation An addition polymer forms when unsaturated monomers react to form a polymer Monomers contain CC bonds Polyalkenes are chemically inert due to the strong CC and CH bonds and nonpolar nature of the bonds and therefore are nonbiodegradable . They are widely used in the surface coatings industry eg in paints as well as being used in sheet form because of the exceptional clarity and durability of the sheets They are produced in a two step process Step 1 Production of the monomer The mono operation. Our findings support the that mechanical loosening is initiated by thermal injury during polymerisation of the cement; the less frequent migration of the metallic femoral component compared a carbanion. Formations and linkages. What are polymers?. Alkene. molecules have the ability to add onto one another and produce large molecules these are polymers. . Therefore what are monomers?. The process of these large molecules forming is termed addition polymerisation.. June 2012. Polymerisation . AIM – to explain how the properties of alkenes allow polymerisation . Key words. monomer – one unit in a chain. polymer – many units joined together. Poly(. ethene. Polymers. . C.X.C objectives. Students should be able to :. Define polymers. Distinguish between addition and condensation as reactions in the formation of polymers. Name examples of polymers formed by:. Objectives:. Be able to describe how some products of cracking are turned into plastics.. Create a . model of . polyermisation. .. Fractional Distillation. Cracking. alkane. . shorter alkane. alkene. C1.5. What do I need to know?. Recall. how hydrocarbons can be cracked to make smaller more useful molecules.. Describe. some of the properties of alkenes. Explain. how alkenes can be used to synthesise polymers for a wide range of different applications.. This resource is strictly for the use of member schools for as long as they remain members of The PiXL Club. It may not be copied, sold nor transferred to a third party or used by the school after membership ceases. Until such time it may be freely used within the member school.. Plastic bag. Polymer: Low-density poly(. ethene. ) (LDPE). Polymerisation . at high temperature and pressure. Plastic bottle. Polymer: High-density poly(. ethene. ) (HDPE). Catalyst . allows polymerisation to occur at lower temperature and pressure. and . MER. means . repeating unit. .. Polymers. are macromolecules formed by joining of repeating structural units on a large scale.. The repeating structural units are called . Monomers. .. Polymerisation. “Rate of polymerisation was higher.“ Dr Richard PlenderleithLambson Ltd.richard.plenderleith@lambson.com3 questions to Richard PlenderleithBAPO is well-known as an efficient photoinitiator f Routes to effective glycopolymer inhibitors of bacterial toxins. s. -j.richards@warwick.ac.uk. . Sarah-Jane Richards. and Matthew I. Gibson. Department of Chemistry, University of Warwick, UK. @. LabGibson.