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Questions and Answers
What is the minimum molecular mass of a polymer?
What does the term 'mer' in polymer mean?
What is the significance of copolymerisation in nature?
What is the impact of polymers on daily life?
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What are the four major industries that rely heavily on polymers?
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What is the result of the discovery and varied applications of polymers?
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What is the term used to describe the process of forming polymers from monomer molecules?
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What is the formation of polymers from mono- and bi-functional monomer molecules?
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What is the primary use of Nylon 6?
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Which catalyst is used in the production of Dacron?
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What is the range of temperatures used to manufacture Dacron?
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What kind of polymerization is used to form polyesters?
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What type of polymer is Novolac?
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Bakelite is formed by cross-linking which polymer?
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Which property of Dacron makes it suitable for blending with cotton and wool?
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What are the main uses of Bakelite?
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What are the monomer reactants in the formation of terylene?
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Which type of polymer is Nylon 6,6?
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What property of Nylon 6,6 can be attributed to strong intermolecular forces like hydrogen bonding?
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Which polymer is obtained by heating caprolactam with water at a high temperature?
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Terylene is also known as which of the following?
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Polyamides are characterized by which type of linkage?
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Which of the following is not involved in the synthesis of Nylon 6,6?
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What kind of polymerization involves the formation of terylene?
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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.
