ISU - Polymers
This is a series of questions based on polymers studies. To be handed in April 15, same day as the Organic test.
If for any reason I do not receive your ISU it cannot be used for your midterm mark.
- Define these terms
- polymer
- repeat unit
- monomer
- copolymer
- glass transition temperature
- Explain the difference between the following:
- oligmer and a polymer
- an addition polymer and a condensation polymer
- a linear polymer and a branched polymer
- thermoplastics and thermosets
- hard and soft plastics
- step- reaction polymerization and chain-reaction polymerization
- With the aid of a digram show the difference between linear, branched and cross-linked polymers. State examples of each.
- Draw the polymer expected from the reaction of phosgene with hydroquinone. What category of polymer is this?
- Explain the difference between Chain Growth Polymerization and Step Growth Polymerization. A diagram would be useful in your explination.
- Explain what vulcanized rubber is and why it will get brittle in the cold? Who invented this material?
- Explain what an elastomer is and why when stretched it will bounce back to its original shape.
- Outline how each of the following products are produced; state the moner units used and type of polymerization. reactants products and any catalysts must be mentioned.
- Dacron
- PVC
- Nylon 66
- Lucite or Plexiglas
- spandex and why is it considered an elastomer?
Lastly; a bibliography must be included.