Quiz on Polymer Degradation & Environment

Effect of polymer degradation EXCEPT

• Increase brittleness

• Change the apperance and colorappearance

• Increase melt flow index

• Reduce tensile and impact strength

What is degradation?

• A method of making plastics

• A type of polymer

• Reduction in physical properties of a polymer

• Increase in molecular weight

Which type of polymer is produced from biological processes?

• Synthetic Polymers

• Natural Polymers

• Metallic Polymers

• Composite Polymers

What does thermal degradation involve?

• Degradation caused by water

• Degradation due to UV light

• Degradation when exposed to high temperatures

• Degradation at low temperatures

The conventional model for thermal degradation is that of involves the major steps of the following EXCEPT

• Initiation

• Depolymerization

• Propagation

• Termination

What causes oxidative degradation?

• Exposure to cold temperatures

• Exposure to water

• Exposure to sunlight

• Exposure to atmospheric oxygen

What is photodegradation?

• Degradation due to moisture

• Degradation due to chemicals

• Degradation due to UV radiation

• Degradation due to heat

Which polymer is typically affected by chain depolymerization?

• Polystyrene

• Polyvinyl chloride

• Poly Methyl methacrylate

• Polyethylene

What is a common cause of chemical degradation?

• Exposure to sunlight

• Exposure to high temperatures

• Exposure to aggressive chemicals

• Exposure to air

What is hydrolytic degradation?

• Degradation caused by water

• Degradation caused by UV light

• Degradation caused by heat

• Degradation caused by oxygen