Question

Identify the isotactic polypropylene from the following:

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

First let us try to understand what the word 'isotactic' means. The word 'iso' usually refers to same or similar.

In this case, this refers to the stereochemistry of the monomer units. So, if similar groups are on the same side of the carbon chain, it is called an isotactic polymer.

Only in option (c) all the methyl groups are on the same side of the zig - zag chain. So, it is an isotactic polymer.