PMT polyesters and polyamides

Cards (30)

  • What is condensation in terms of polymers?
    Small molecule eliminated to form a larger molecule
  • What small molecule is usually eliminated during condensation?
    H2O
  • How many monomers are condensation polymers usually formed from?
    Two
  • What properties do monomers forming condensation polymers have?
    Each has two functional groups
  • What is the linkage in a polyester?
    Esther linkage
  • What molecule is eliminated in the formation of a polyester?
    H2O
  • What are the two monomers that form a polyester?
    Diol and dicarboxylic acid
  • What is a generic repeating unit for a polyester?
    Structure with ester linkages
  • Which monomers is Terylene made from?
    Diol and dicarboxylic acid
  • What is Terylene used for?
    As a fibre for making clothes
  • What is the linkage in a polyamide?
    Amide linkage
  • Which molecule is eliminated when a polyamide is formed?
    H2O
  • What are the two monomers used to form a polyamide?
    Diamine and dicarboxylic acid
  • Which monomers is Nylon-6,6 made from?
    Hexamethylenediamine and adipic acid
  • What is the repeating unit of Nylon-6,6?
    Structure with amide linkages
  • If you are making Nylon in the lab, what monomers would you use?
    Hexane-1,6-diacyl chloride
  • What molecule is eliminated when making Nylon?
    HCl
  • What is Kevlar used for?
    In body armour and oven gloves
  • Which monomers make up Kevlar?
    Diamine and dicarboxylic acid
  • What is the repeating unit of Kevlar?
    Structure with amide linkages
  • Why are poly(alkenes) not biodegradable?
    Non-polar C-H and C-C bonds
  • Why is it bad to burn poly(alkenes)?
    Releases toxic chemicals and soot
  • Where do most poly(alkenes) end up?
    Landfill sites
  • Why can condensation polymers be broken down?
    They have polar bonds
  • How are condensation polymers broken down?
    Hydrolysis (opposite of condensation)
  • What is the difference between addition and condensation polymerisation?
    Condensation eliminates a small molecule
  • Explain hydrogen bonding between polyamides.
    C=O and N-H are polar bonds
  • Why do polyesters not show hydrogen bonding?
    All O-H bonds are removed during polymerisation
  • Write the products of acid and base hydrolysis of a polyester.
    • Diol
    • Dicarboxylic acid
  • Write the products of acid and base hydrolysis of a polyamide.
    • Diamine
    • Dicarboxylic acid