Introduction to Polymers Lecture Review
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Questions and Answers

What is the process of joining monomers to form polymers called?

  • Oxidation
  • Hydrolysis
  • Condensation
  • Polymerization (correct)
  • Which type of polymers can be derived from petrochemicals?

  • Polyvinyl polymers
  • Synthetic polymers (correct)
  • Natural polymers
  • Biodegradable polymers
  • What is the main purpose of antistatic agents in plastics?

  • Reducing flexibility
  • Enhancing biodegradability
  • Increasing hardness
  • Improving surface conductivity (correct)
  • What is the function of additives in polymers?

    <p>Improve processability and properties</p> Signup and view all the answers

    Which term refers to the number of repeating units in a long polymer molecule?

    <p>Degree of polymerization</p> Signup and view all the answers

    What are plastics primarily composed of?

    <p>Synthetic polymers</p> Signup and view all the answers

    What are fillers used for in plastics?

    <p>Improving the mechanical properties</p> Signup and view all the answers

    Which type of polymers do not melt but undergo decomposition?

    <p>Thermosetting</p> Signup and view all the answers

    What do flame retardants do in plastics?

    <p>Reduce the likelihood of combustion</p> Signup and view all the answers

    What do plasticizers do to the properties of the material?

    <p>Alter the properties and forming characteristics</p> Signup and view all the answers

    What is the main difference between amorphous and crystalline thermoplastics in terms of transparency?

    <p>Amorphous thermoplastics are usually translucent or opaque</p> Signup and view all the answers

    What is the purpose of coupling agents in plastics?

    <p>To improve the bonding of the plastic to inorganic filler materials</p> Signup and view all the answers

    What do lubricants do to the viscosity of molten plastic?

    <p>Reduce the viscosity of the molten plastic</p> Signup and view all the answers

    What is a characteristic feature of thermoplastic polymers in terms of melting?

    <p>Reversible melting and solidification</p> Signup and view all the answers

    Which type of reinforcement improves the strength and stiffness of a polymer?

    <p>Glass fibers</p> Signup and view all the answers

    What is a key function of stabilizers in polymers?

    <p>Prevent deterioration of polymer due to environmental conditions</p> Signup and view all the answers

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