Question

Which of the following polymers is formed due to the co-polymerization of \( 1,3 \)-butadiene and phenylethene?

• A. \( \text{Buna-N} \)
• B. \( \text{Neoprene} \)
• C. \( \text{Novolac} \)
• D. \( \text{Buna-S} \)

Hint:

Co-polymerization of different monomers leads to polymers with distinct properties, like Buna-S, made from 1,3-butadiene and styrene.

Answer 1

The Correct Option is D

Step 1: Definition of Co-Polymerization
Co-polymerization is a process where two different monomers are polymerized together to form a polymer. The resulting polymer can have unique properties depending on the combination of the monomers.
Step 2: Identification of the Polymerization Products
Let's review the information provided and identify each polymer:
Buna-S: This is a synthetic rubber created by the co-polymerization of 1,3-butadiene and styrene (phenylethene). This combination provides rubber-like properties.
Buna-N: This synthetic rubber is formed by the co-polymerization of 1,3-butadiene and acrylonitrile. It is used for products requiring resistance to oils and solvents.
Neoprene: This polymer is made from chloroprene, and it exhibits resistance to heat, oil, and chemicals, making it useful for industrial applications.
Novolac: A phenolic resin produced from phenol and formaldehyde, often used in making molded products.
Conclusion: Among the listed polymers, Buna-S is the one produced by the co-polymerization of 1,3-butadiene and styrene. Therefore, the correct answer is: \[ \boxed{\text{Buna-S}} \]