AS Chemistry Polymers Nylon demo You have been given a hydrocarbon cut it out so it is in one piece Then fold it like in the pictures, but do not
stick it together What molecule do you think you have been given? Explain your answer. Carbon atoms Hydrogen atoms
You have ethene Now break the double bond Join your molecule to the person next to you using glue, tape or staples Do this until they are all joined to together in a big chain Double bond
Carbon atoms Hydrogen atoms Polymers from Alkenes Objective: to know about the addition
polymerisation of alkenes Success criteria: describe the addition polymerisation of alkenes deduce the repeat unit of an addition polymer obtained from a given monomer identify the monomer that would produce a given section of an addition polymer
Polymerisation Polymers are long chain molecules built up from a whole lot of identical small molecules called monomers.
Monomers are: Always unsaturated (double bond present) Based on a particular alkene Addition polymerisation: Is the process by which these monomers are joined.
Results in long saturated chains. Polyalkenes Alkenes can undergo addition reactions with themselves to form a long chain polymer molecule. This reaction is addition polymerization. The polymer can be represented by showing the repeating
unit with square brackets around it. The n stands for a unspecified number of monomer units. 7 of 34 Boardworks Ltd 2009 Polymerization of ethene
8 of 34 Boardworks Ltd 2009 Alkene molecules form addition polymers Pearson Education Ltd 2008 This document may have been altered from the original
Other polyalkenes Propene undergoes addition polymerization to form polyproprene: Chloroethene undergoes addition polymerization to form polychloroethene:
10 of 34 Boardworks Ltd 2009 Addition polymerisation You need to be able to predict: The repeat unit of a polymer from a specified monomer.
The monomer used to make a specific polymer. The general reaction is: Formation of poly(ethene) Week 16
Formation of poly(propene) Pearson Education Ltd 2008 This document may have been altered from the original Draw and name the products
Week 16 Poly(tetrafluoroethene) (Teflon or PTFE) Pearson Education Ltd 2008 This document may have been altered from the original Week 16
Draw the monomer used to make Orlon Pearson Education Ltd 2008 This document may have been altered from the original Which alkene?
16 of 34 Boardworks Ltd 2009 Exam Question A short section of a polymer is shown below. Name and draw the structure of the monomer used to
produce this polymer. Cyclopentene (see structural formula below) can be polymerised to give poly(cyclopentene). Draw a section of poly(cyclopentene) to show two repeat units. Another exam question
Polymers from Alkenes Objective: to know about the addition polymerisation of alkenes Success criteria: describe the addition polymerisation of alkenes deduce the repeat unit of an addition polymer obtained from a given monomer
identify the monomer that would produce a given section of an addition polymer
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Daniel Courcy- [email protected] Nathan Salemme- [email protected] Outline Introduction Analyzing Short Flow Performance Scheme Architecture and Mechanisms Simulation Discussion Conclusion References Most figures, tables and graphs in this presentation were gathered from the Journal paper: The War Between Mice and Elephants.
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