16 Questions
What is the process of joining monomers to form polymers called?
Polymerization
Which type of polymers can be derived from petrochemicals?
Synthetic polymers
What is the main purpose of antistatic agents in plastics?
Improving surface conductivity
What is the function of additives in polymers?
Improve processability and properties
Which term refers to the number of repeating units in a long polymer molecule?
Degree of polymerization
What are plastics primarily composed of?
Synthetic polymers
What are fillers used for in plastics?
Improving the mechanical properties
Which type of polymers do not melt but undergo decomposition?
Thermosetting
What do flame retardants do in plastics?
Reduce the likelihood of combustion
What do plasticizers do to the properties of the material?
Alter the properties and forming characteristics
What is the main difference between amorphous and crystalline thermoplastics in terms of transparency?
Amorphous thermoplastics are usually translucent or opaque
What is the purpose of coupling agents in plastics?
To improve the bonding of the plastic to inorganic filler materials
What do lubricants do to the viscosity of molten plastic?
Reduce the viscosity of the molten plastic
What is a characteristic feature of thermoplastic polymers in terms of melting?
Reversible melting and solidification
Which type of reinforcement improves the strength and stiffness of a polymer?
Glass fibers
What is a key function of stabilizers in polymers?
Prevent deterioration of polymer due to environmental conditions
Test your understanding of the fundamental concepts related to polymers including their composition, nature, applications, and environmental impact. This quiz reviews lecture numbers 3, 4, and 5 on the introduction to polymers, covering macromolecules, monomers, and their diverse applications.
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