polymersNew2011 - Greater St. Albert Catholic Schools
Transcript of polymersNew2011 - Greater St. Albert Catholic Schools
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Section 15.2
Polymers
Polymer
n a large, chainlike molecule built from many small molecules (monomers) that repeat within the polymer
monomer
polymer
Examples of polymers
n Plastics – Polymers that can be
heated and shaped – All plastics are synthetic
n Rubber – A natural polymer
n Fabrics – Cotton, linen, wool are
natural – Rayon, nylon, and
polyester are synthetic
1) Addition Polymers n one type of polymer is formed from an addition
reaction of alkene monomers n the monomer contains a double bond n an addition reaction forms a new bond between the
monomers
n To name the polymer add the prefix “poly” to the monomer name
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n Draw 2 units of the polymer
Let’s draw 2 units of the polymer formed from this monomer, and name it
n What would be the structure and name of the polymer formed from chloroethene?
n polychloroethene
Condensation Polymers
n Monomers are combined through multiple condensation reactions (reactions that produce water)
n Each monomer must have two functional groups within it
All condensation polymers have
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2 types of condensation polymers:
Polyester Nylon
1 monomer contains R-OH 1 monomer contains R-COOH
1 monomer contains R-NH2 1 monomer contains R-COOH
n Addition or condensation?
n addition polymer or condensation n Addition or Condensation?
Addition or condensation?