Question

Q11. 6 points

Please Compare thermoplastic and thermosetting polymers (a) on the basis of mechanical

characteristics upon heating and (b) according to possible molecular structures. (c) what

type of polymer material, thermosetting or thermoplastic, you might select for the

following applications: a surgeon’s glove, a beverage container, and a pulley.

Q12. 3 points

How do the glass-transition temperatures of polyethylene, polypropylene, and

polymethyl methacrylate compare? Explain their differences, based on the structure of

the monomer of each.

Q14. 4 points

The mechanical properties of polymers are specified with many of the same parameters

that are used for metals. Three different types of stress-strain behavior are found below for

the polymeric materials. Which graph is an elastic polymer and which one is a brittle

polymer ? what is the tensile strength for a brittle polymer ?

Q15: 3 points

What are composites?

Q11. 6 points Please Compare thermoplastic and thermosetting polymers (a) on the basis of mechanical characteristics upon heating and (b) according to possible molecular structures. (c) what type of polymer material, thermosetting or thermoplastic, you might select for the following applications: a surgeon's glove, a beverage container, and a pulley. Q12.3 points How do the glass-transition temperatures of polyethylene, polypropylene, and polymethyl methacrylate compare? Explain their differences, based on the structure of the monomer of each. polyethylene ........... T, --120°C polypropylene .......... T, --16°C polymethyl methacrylate .. T, = +90 to 105°C Q14.4 points The mechanical properties of polymers are specified with many of the same parameters that are used for metals. Three different types of stress-strain behavior are found below for the polymeric materials. Which graph is an elastic polymer and which one is a brittle polymer? what is the tensile strength for a brittle polymer?

Answer 1