Question

Isotactic polypropylene polymer is one in which

• A. the methyl groups present alternate regularly from one side to the other
• B. all methyl groups are on one side of the extended chain. It is a highly crystalline, has high melting point and forms strong fibres
• C. the methyl groups are distributed at random. It is a soft, elastic and rubbery material
• D. None of the above

Answer 1

Answer: (B)

Structure of the isotactic polypropylene is as

Thus, it has high crystallinity, melting point and strength.