6.2.3 (c) Distinguishing between Condensation polymers and Addition polymers

(c) prediction from Addition and Condensation polymerisation of:

(i) the repeat unit from a given monomer(s)

(ii) the monomer(s) required for a given section of a polymer molecule

(iii) the type of polymerisation.

out the type of polymer is easy.

If the Repeat Unit is two Carbon atoms in length it was an Addition polymer.

To work out the structure of the repeat unit from the monomer

i) Remove the double bond

ii) add a bond to each end

iii) Add some brackets and an n.

To work out the structure of the monomer from the Repeat Unit i) remove the brackets ii) remove the bonds on the end iii) put a double bond in the centre.

If the Repeat Unit is longer than two Carbon atoms it was a Condensation polymer.

To work out the structure of the repeat unit from the monomers

i) Remove two H's from one molecule and two OH's from the other

ii) join the remaining molecules

iii) Add some brackets and an n.

Or