Polymers are widely used in the automotive industry, aerospace industry, computer

industry, building trades and many other applications. For example, automobile bumpers

are now made with a polymer blend that has sufficient toughness to meet the standards.

This has resulted in a significant weight saving and the conversion from metal has also

been cost effective due to decrease in energy costs and the ability to recycle the polymer

blend from older cars to manufacture bumpers for new vehicles.

i) What is polymer blend?

ii) Give TWO (2) examples of polymer blend. Briefly discuss its properties and

functions.

iii) How to determine the impact properties of polymer component?

iv)Give TWO (2) suggestions how to improve the impact properties of polymer