9 Questions
What are polymers?
Polymers are macromolecules formed by linking together a large number of small molecules called monomers.
What is the single repeating unit of a polymer called?
The single repeating unit is called a monomer.
What are high polymers and oligopolymers based on?
High polymers have a high degree of polymerization, while oligopolymers have a comparatively low degree of polymerization.
What is the range of molecular weights of polymers?
The molecular weights of polymers are generally in the range of 5000 to 200,000.
What is the degree of polymerization?
The total number (n) of single monomer units combined together to form a polymer is known as the degree of polymerization.
What is the glass transition temperature (Tg) of a polymer?
The temperature at which the polymer experiences the transition from rubbery to rigid states.
Why is the glass transition temperature important for polymers?
It defines the upper and lower temperature limits for numerous applications, especially for semi-crystalline polymers, and influences the fabrication and processing procedures for polymers and polymer-matrix composites.
What happens to a rigid glass when it is heated above the glass transition temperature (Tg)?
The sequences of events occur in the reverse order, transitioning from a rigid state to a rubbery state.
How do glass transition temperatures impact the applications of polymers?
They define the upper and lower temperature limits for numerous applications, especially for semi-crystalline polymers.
Test your knowledge of polymers with this Engineering Chemistry quiz. Explore the structure, properties, and applications of polymers, and learn about the linking of monomers to form giant macromolecules.
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