Problem 2.1: Sustainable design of materials considers all the aspects such as application, disposal, and reuse of materials. Find an example of the sustainable materials design approach used and discuss all the aspects. Consider the context of plastics, polymers, etc. [50] Problem 2.2: Sometimes confusion arises to differentiating plastic recycling and upcycling. You as a polymer scientist/engineer define these and elaborate with example to help eliminate the confusion