Multiple choice

Match the following compounding ingredients in plastic technology with their respective functions.

 
Compounding ingredients
Functions
P. Sodium bicarbonate 1. Pigment
Q. Dioctyl phthalate 2. UV stabilizer
R. Titanium dioxide 3. Blowing agent
S. Phenyl salicylate 4. Plasticizer

  1. P - 3, Q - 1, R - 4, S - 2

  2. P - 1, Q - 4, R - 3, S - 2

  3. P - 4, Q - 1, R - 2, S - 3

  4. P - 3, Q - 4, R - 1, S - 2

  5. P - 2, Q - 4, R - 1, S - 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sodium bicarbonate is commonly used as a blowing agent in the manufacture of rigid foams which are chiefly polystyrene polyurethane, epoxy, and polyvinyl chloride. Dioctyl phthalate (DOP) is the most common of the class of phthalates which are used as plasticizers. Titanium dioxide is the most important white pigment used in the polymer industry. Phenyl salicylate is used as UV stabilizer for commercial polymers and sun tanning lotions.

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