polymer

• condensation - polyester

  diol + dicarboxylic (-dioic acid)

  -> polyester + water

  PET

  • -COO- ester link
• condense - polyamide


  diamine (amino) + dicarboxylic

  -> polyamide + water

  Nylon

  • N-H C=O : amide link
• addition vs condense

  add: 1 product. only C=C

  • condense: 2 product. diff monomer or func group. 2 func group each monomer
• • amino acid structure -> protein

  amine group - NH2 - react with others' acid group -> polymer chain

  • CH2 -

  carboxyl group COOH

  -> polyamide + water