Condensation

• What type of polymers are being discussed in the video?

  Condensation polymers
• What are polyesters made using?

  Ester links
• What is the common combination of monomers used to create polyesters?

  • Dicarboxylic acid monomer (contains two carboxylic acid groups)
  • Diol monomer (contains two alcohol groups)
• What do the colored rectangles within molecules represent?

  The rest of the molecule
• What must the dicarboxylic acid do to combine with the diol?

  Give up its OH group
• What does the diol give up during the polymerization process?

  A hydrogen atom from its OH group
• What is formed when the dicarboxylic acid and diol combine?

  A water molecule
• What is the bond formed between the dicarboxylic acid and diol called?

  Ester link
• What is a dimer in the context of condensation polymers?

  A molecule formed from two monomers
• What must be done to show the repeating unit of a polyester?

  Remove the OH and H from the ends
• What do the brackets in the repeating unit signify?

  They indicate the repeating nature of the unit
• What does the letter 'n' represent in the context of polymers?

  The number of repeating units
• Why are these polymers called condensation polymers?

  Because the process forms water molecules
• What are the requirements for monomers to combine in condensation polymers?

  1. Each monomer must have at least two functional groups
  2. There must be at least two different functional groups overall
  3. A small molecule (generally water) is released in the process
• What are the specific monomers used in the example of polyester formation?

  Ethanedioic acid and ethanediol
• What is the name of the polyester formed from ethanedioic acid and ethanediol?

  Poly(ethyl ethanoate)
• What is a key characteristic of polyesters regarding biodegradability?

  They are generally biodegradable
• How do polyesters differ from addition polymers like plastics in terms of biodegradability?

  Polyesters can break down naturally, while addition polymers generally cannot
• What are the main differences between condensation polymers and addition polymers?

  • Condensation polymers release small molecules (like water) during formation
  • Addition polymers do not release small molecules
  • Condensation polymers can be biodegradable, while addition polymers typically are not