- 1. Polymer engineering is a branch of engineering that deals with the design, development, and processing of polymer materials. Polymers are large molecules composed of repeated subunits, typically derived from petrochemicals or renewable sources such as plants. Polymer engineers work on various applications of polymers, such as in plastics, composites, coatings, adhesives, and more. They focus on understanding the structure-property relationships of polymers to optimize their performance and functionality. Polymer engineering plays a crucial role in industries such as automotive, aerospace, medical, and consumer goods, where advanced materials with specific properties are required. By manipulating the molecular structure and processing conditions, polymer engineers create innovative materials that meet the demands of modern technology and provide solutions to complex challenges.
What is a polymer?
A) A type of organic acid
B) A large molecule composed of repeating structural units
C) A rare mineral found underground
D) A type of metal alloy
- 2. Which polymer property is related to the ability of a material to retain its shape after being deformed?
A) Transparency
B) Thermal conductivity
C) Elasticity
D) Density
- 3. Which polymer property is important in applications where the material will be exposed to high temperatures?
A) Flexibility
B) Heat resistance
C) Electrical conductivity
D) Transparency
- 4. What is the role of a mold in injection molding of polymers?
A) To give the polymer its desired shape
B) To test mechanical properties of the polymer
C) To cool the polymer rapidly
D) To mix additives and polymers together
- 5. What does the term 'polymerization' mean in the context of polymer engineering?
A) The process of extruding polymers
B) The process of breaking down polymers into monomers
C) The process of reacting monomer molecules together to form a polymer
D) The process of adding color to polymer materials
- 6. What is the purpose of annealing in the context of polymer processing?
A) To increase material transparency
B) To cool the polymer rapidly
C) To relieve internal stresses and improve crystallinity
D) To enhance electrical conductivity
- 7. What is a common example of a thermoplastic polymer?
A) Phenol formaldehyde
B) Polyester
C) Polyethylene
D) Epoxy resin
- 8. What is a common method for characterizing the molecular weight distribution of a polymer?
A) Color titration
B) X-ray diffraction
C) Gel permeation chromatography
D) UV-vis spectroscopy
- 9. What is a common method for recycling polymer materials?
A) Mechanical recycling
B) Landfill disposal
C) Biodegradation
D) Chemical incineration
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