Question

Which option(s) correctly match(es) the Class of additives used during polymer compounding with the corresponding Chemicals? 

• A. P-4; Q-3; R-1; S-2
• B. P-4; Q-3; R-3; S-1
• C. P-1; Q-4; R-2; S-3
• D. P-2; Q-1; R-1; S-2

Hint:

In polymer compounding, the type of additive used plays a crucial role in modifying the properties of the polymer. For example, {plasticizers} reduce the rigidity, {flame retardants} prevent ignition, and {antioxidants} prevent oxidation.

Answer 1

The Correct Option is A, B

In this question, we need to match the class of additives used in polymer compounding with the correct chemicals. Let’s break down each class and its corresponding chemical:
- Antioxidant (P): Antioxidants are used to prevent the oxidative degradation of polymers. The most common antioxidant in polymer compounding is Phenyl \(\beta\)-naphthyl amine (Chemical 4). Therefore, P-4 is correct.
- Flame retardant (Q): Flame retardants are used to slow down or prevent the ignition of polymers. Tricresyl phosphate (Chemical 3) is a commonly used flame retardant. Thus, Q-3 is correct.
- Plasticizer (R): Plasticizers are used to improve the flexibility and workability of polymers. Di(2-ethylhexyl) phthalate (Chemical 2) is a common plasticizer used in polymer compounding. Therefore, R-2 is correct.
- Colorant (S): Colorants are used to provide color to polymers. Phthalocyanine (Chemical 1) is a commonly used colorant in polymer compounding. Hence, S-1 is correct.
Therefore, the correct matches are:
(A) P-4; Q-3; R-1; S-2 and (B) P-4; Q-3; R-3; S-1.