Polymerization of Terylene or Dacron
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Questions and Answers

What is the minimum molecular mass of a polymer?

  • 10^7 u
  • 10^3 u (correct)
  • 10^5 u
  • 10^2 u

    • What does the term 'mer' in polymer mean?

  • Many
  • High molecular mass
  • Unit or part (correct)
  • Molecule

    • What is the significance of copolymerisation in nature?

  • It produces only one type of amino acid
  • It produces 20 different amino acids
  • It has no significance in nature
  • It has been used by nature in polypeptides (correct)

    • What is the impact of polymers on daily life?

    <p>It has made life more colourful and easier</p> Signup and view all the answers

    What are the four major industries that rely heavily on polymers?

    <p>Plastics, elastomers, fibres, and paints and varnishes</p> Signup and view all the answers

    What is the result of the discovery and varied applications of polymers?

    <p>It has made life more colourful and easier</p> Signup and view all the answers

    What is the term used to describe the process of forming polymers from monomer molecules?

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

    What is the formation of polymers from mono- and bi-functional monomer molecules?

    <p>Polymerisation reaction</p> Signup and view all the answers

    What is the primary use of Nylon 6?

    <p>Tyre cords</p> Signup and view all the answers

    Which catalyst is used in the production of Dacron?

    <p>Zinc acetate-antimony trioxide</p> Signup and view all the answers

    What is the range of temperatures used to manufacture Dacron?

    <p>420 to 460 K</p> Signup and view all the answers

    What kind of polymerization is used to form polyesters?

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

    What type of polymer is Novolac?

    <p>Linear polymer</p> Signup and view all the answers

    Bakelite is formed by cross-linking which polymer?

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

    Which property of Dacron makes it suitable for blending with cotton and wool?

    <p>Crease resistance</p> Signup and view all the answers

    What are the main uses of Bakelite?

    <p>Combs and electrical switches</p> Signup and view all the answers

    What are the monomer reactants in the formation of terylene?

    <p>Ethylene glycol and terephthalic acid</p> Signup and view all the answers

    Which type of polymer is Nylon 6,6?

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

    What property of Nylon 6,6 can be attributed to strong intermolecular forces like hydrogen bonding?

    <p>High tensile strength</p> Signup and view all the answers

    Which polymer is obtained by heating caprolactam with water at a high temperature?

    <p>Nylon 6</p> Signup and view all the answers

    Terylene is also known as which of the following?

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

    Polyamides are characterized by which type of linkage?

    <p>Amide linkages</p> Signup and view all the answers

    Which of the following is not involved in the synthesis of Nylon 6,6?

    <p>Terephthalic acid</p> Signup and view all the answers

    What kind of polymerization involves the formation of terylene?

    <p>Condensation polymerization</p> Signup and view all the answers

    Study Notes

    Polymers

    • Polymers are very large molecules having high molecular mass (10^3-10^7 u).
    • The term "polymer" is coined from two Greek words: poly means many and mer means unit or part.

    Importance of Polymers

    • Polymers have revolutionized daily life and industrial scenarios.
    • They are the backbone of four major industries: plastics, elastomers, fibers, and paints and varnishes.

    Types of Polymers

    • Polypeptides: contain as many as 20 different amino acids.

    Classes of Polymers

    • Polyamides: possess amide linkages, important examples of synthetic fibers.
    • Polyesters: polycondensation products of dicarboxylic acids and diols.

    Synthetic Polymers

    • Nylon 6: used for the manufacture of tire cords, fabrics, and ropes.
    • Polyesters: Dacron or terylene is the best known example, used in blending with cotton and wool fibers and as glass reinforcing materials.

    Phenol-Formaldehyde Polymer

    • Obtained by the condensation reaction of phenol with formaldehyde in the presence of an acid or base catalyst.
    • Initial product is a linear product called Novolac, used in paints.
    • Novolac on heating with formaldehyde undergoes cross-linking to form an infusible solid mass called Bakelite.
    • Bakelite is a thermosetting polymer, used for making combs, phonograph records, electrical switches, and handles of various utensils.

    Condensation Polymers

    • Polyamides: prepared by the condensation polymerization of diamines with dicarboxylic acids or condensation of amino acids or their lactams.
    • Polyesters: prepared by the reaction of ethylene glycol and terephthalic acid.

    Uses of Polymers

    • Nylon 6,6: used in making sheets, bristles for brushes, and in the textile industry.
    • Terylene or Dacron: used in blending with cotton and wool fibers and as glass reinforcing materials.
    • Bakelite: used for making combs, phonograph records, electrical switches, and handles of various utensils.

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    Description

    This quiz is about the formation of terylene or dacron through the interaction of ethylene glycol and terephthalic acid, a type of polymerization process. Learn about the reactants and products involved.

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