Tacticity / Optical Isomerism:
The orientation of substituent group attached to the assymetric carbon of a polymeric material is called the tacticity or optical isomerism.
Types of Tacticity / Optical Isomerism:
1/ Isotactic polymer
2/ Syndiotactic polymer
3/ Atactic/ Hetero-tactic polymer
1/Isotactic polymer:
All the R groups are lined up on the same side either on upper side or lower side.
2/ Syndiotactic polymer:
The R groups alternate from side to side.
3/ Atactic/ Hetero-tactic polymer:
Random side to side positioning of R groups.
