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Explain the meaning of the word 'polymer' and its origin?
Explain the meaning of the word 'polymer' and its origin?
The word 'polymer' is derived from the classical Greek words 'poly' meaning 'many' and 'meres' meaning 'parts'. It refers to a molecular compound with high molecular mass composed of a large number of repeating units called monomers.
Provide an example of a polymer and its monomer?
Provide an example of a polymer and its monomer?
Polythene is a polymer formed by linking together a large number of ethene molecules. The monomer is ethene (CH2 = CH2) and the polymer is polyethene ((CH2-CH2)n).
Differentiate between natural polymers and synthetic polymers?
Differentiate between natural polymers and synthetic polymers?
Natural polymers, such as proteins, cellulose, and silk, are found in nature, while synthetic polymers are produced by artificial processes. Natural polymers can also be prepared synthetically in some cases.
How do polymers impact various industries?
How do polymers impact various industries?
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What is the significance of the 'degree of polymerization'?
What is the significance of the 'degree of polymerization'?
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Study Notes
Definition and Origin of 'Polymer'
- 'Polymer' refers to a large molecule composed of repeating structural units called monomers, bonded together.
- The term originates from the Greek words "poly," meaning "many," and "meros," meaning "parts."
Example of a Polymer and Its Monomer
- An example of a polymer is polyethylene, commonly used in plastic bags and bottles.
- Its associated monomer is ethylene (C2H4), a gaseous compound from which polyethylene is formed through polymerization.
Natural vs. Synthetic Polymers
- Natural polymers are found in nature and include substances like proteins, carbohydrates, and nucleic acids.
- Synthetic polymers are man-made and include materials such as nylon, polyester, and epoxy.
- Natural polymers often have complex structures and specific biological functions, while synthetic polymers can be engineered for diverse applications and properties.
Impact of Polymers on Various Industries
- Polymers play a crucial role in the packaging industry by enhancing durability and flexibility.
- In the automotive sector, polymers are used for parts that reduce weight and improve fuel efficiency.
- The healthcare industry utilizes polymers for medical devices, drug delivery systems, and biocompatible materials.
- The construction industry employs polymers in insulation, adhesives, and coatings for improved durability and weather resistance.
Significance of the 'Degree of Polymerization'
- The degree of polymerization (DP) indicates the number of repeating monomer units in a polymer chain.
- Higher DP values generally result in increased molecular weight, influencing properties such as strength, viscosity, and thermal stability.
- Understanding DP is essential for predicting a polymer’s performance in various applications and processing conditions.
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Description
Test your knowledge of polymers in Engineering Chemistry with this quiz. Assess your understanding of polymer concepts, properties, and applications.
