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