Construct a vis-à-vis comparison of different alloyed materials. Cite the advantages, disadvantages, and its best application.

Given the table below and your judgement for extreme operational conditions, select polymers for the following applications respectively: a dry ice bucket (operating temperature of -78C), a teeth aligner, a hair dryer (operating temperature range of 60-80C) and a phone case. Table 15.2 Melting and Glass Transition Temperatures for Some of the More Common Polymeric Materials Material Polyethylene (low density) Polytetrafluoroethylene Polyethylene (high density) Polypropylene Nylon 6,6 Polyester (PET) Poly(vinyl chloride) Polystyrene Polycarbonate Glass Transition Temperature [°C (°F)] -110 (-165) -97 (-140) -90 (-130) -18 (0) 57 (135) 69 (155) 87 (190) 100 (212) 150 (300) a. Polypropylene, PET, PTFE, Polypropylene O b. PTFE, HDPE, HDPE, polypropylene c. LDPE, PTFE, Nylon, polypropylene O d. Nylon, PET, HDPE, PVC Oe. HDPE, LDPE, LDPE, PTFE Melting Temperature [°C (°F)] 115 (240) 327 (620) 137 (279) 175 (347) 265 (510) 265 (510) 212 (415) 240 (465) 265 (510)

why are surfaces and interfaces so important in molecular engineering? select one or more

What does a HYSYS fluids package represent thermodynamically

Discuss the classification of heat exchangers.

What are the four elements of corrosion cell ? Give brief description for each of the element.

Industrial applications of fluidized bed bioreactor (biotechnology, pharmacy, food, metallurgy, among others).

a. Discuss the relative importance. Is it very important, somewhat important or not important? b. How does the viscosity of a polymer affect the printability and the print quality? c. What is a typical range of viscosity for successful 3-D printing?

4. Explain what happens during hot working. How is this different than cold working?

Describe with illustration the performance of two varieties of dryers used in the chemical Industry. What are the variables in dryer design that will enhance dryer efficiency