2. Monomer (1)Olefin with polar substituent For example CH H.=CH C=CH HC-C C=N C-O o O--CH Acrylonitrile Nitroethene Methyl methacrylate2. Monomer (1) Olefin with polar substituent H2 C CH C N H2 C CH N O O H2 C C C O CH3 O CH3 Acrylonitrile Nitroethene Methyl methacrylate For example