polymers

• addition polymerisation

  • made of alkene monomers
  • poly( alkene )
• condensation polymerisation

  • monomers are not alkenes
  • ester and water is produced
  • called polyesters
• amino acids have two functional groups , the amine and carboxylic acid groups
• the carboxylic function group is ;

  • c(double bond) OOH
• if a polymer is made in a condensation reaction and it is made of one type of amino acid then it is called a polypeptide
• naturally occuring polymers

  • dna
  • protein
  • starch
  • cellulose
  • silk
• DNA

  • contains genetic instructions
  • it is two polymer chains of nucleotide monomers that wrap to form a double helix structure
• the amine groups functional group is

  • NH2