POLYMERS

IUPAC system
 Identify repeat unit, starting with highest priority atoms i
and putting substituents on lowest number positions
 Nomenclature is similar to normal IUPAC for organics, but yo
to know names for divalent groups
-O oxy -C(CH3)2- Isopropylid
-NH imino -C6H4- Phenylene
-CH2 methylene
-CH2CH2- Ethylene
-CH(CH3) Ethylidene
-CH(CH3)CH2 propylene
-CH2CH2CH2 Trimethylene

,
, Examples
-(OCH2)n Polyformaldehyde (poly(oxymethylene)




Exercise
Identify the repeat unit and name the polymers



poly(1-phenylethene-1,2-diyl)
(iii) –(CHFCH2CHFCH2CHFCH2CHFCH2)-