Addition of stabiliser during PVC manufacture is done to________________?
Correct answer: D. Prevent its thermal degradation
- A. Improve its impact strength
- B. Improve its elasticity
- C. Reduce the melt viscosity & glass transition temperature
- D. Prevent its thermal degradation
Explanation
PVC can release hydrogen chloride and undergo autocatalytic degradation when heated, causing discoloration and loss of properties. Stabilizers capture acidic products and inhibit this thermal degradation.
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