Which of the following best describes the polymer chain shown below?
A)Atactic polypropylene
B)Isotactic polypropylene
C)Syndiotactic polypropylene
D)Cross-linked polypropylene

Question

Which of the following best describes the polymer chain shown below? 
A)Atactic polypropylene 
B)Isotactic polypropylene 
C)Syndiotactic polypropylene 
D)Cross-linked polypropylene

Quizplus · Accepted Answer

The polymer chain shown has a regular alternation of R and S configurations of the pendant methyl groups, indicating that it is a syndiotactic polypropylene. Atactic polypropylene has random placement of the methyl groups, isotactic polypropylene has all methyl groups on the same side, and cross-linked polypropylene has covalent bonding between polymer chains.

Which of the Following Best Describes the Polymer Chain Shown