1.

The degreen of crystallinity of which of the following is highest

Answer»

Atactic polyvinylchloride
Isotactic polyvinylchloride
Syndiotactic polyvinylchloride
All of these

Solution :Syndiotactic polyvinylchloride
`(-CH_(2)-UNDERSET(Cl)underset(|)(Cl)-CH_(2)-overset(Cl)overset(|)(C)H-CH_(2)-underset(Cl)underset(|)(C)H-CH_2-overset(Cl)overset(|)(C)H-CH_(2)-underset(Cl)underset(|)(CH)-)_(n)`
In this arrangementthe chlorine ATOMS are alternately arranged. the polymer is stereoregular and has high crystallinity.


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