Essentials Of Materials Science And Engineering
Essentials Of Materials Science And Engineering
4th Edition
ISBN: 9781337670845
Author: ASKELAND
Publisher: Cengage
Question
Book Icon
Chapter 16, Problem 16.1P
Interpretation Introduction

Interpretation:

The terms linear and branched polymers are to be described. Also, it is to be stated if thermoplastics can be branched.

Concept Introduction:

Polymers are the large molecules which are made up of many small repeating units bonded together in linear, branched or cross-linked manner.

They are of two types: natural and synthetic. Natural polymers are those which occur naturally, and synthetic polymers are those which are synthesized or man-made.

Expert Solution & Answer
Check Mark

Answer to Problem 16.1P

Linear polymers are straight chains of polymers made up by carbon-carbon bonds.

When branching occurs in this straight chain, branched polymers are formed.

Thermoplastics can be branched polymers which can be remolded by temperature change.

Explanation of Solution

Linear or straight-chain polymer are those which are made up of long chain of carbon-carbon bonds. The geometry around each of the carbon in this type of polymer is tetrahedral and physically the chain is neither linear nor straight. Examples of this kind of polymer are polyethene, Teflon, polypropylene, etc.

When some of the units form branches on this linear chain of polymer, then the resulting polymer is known as branched polymer. These branches are not linked to any other branch. Examples of this kind of polymer are starch, glycogen, etc.

Thermoplastics are a type of branched polymer being associated to each other by intermolecular forces which weakens when the temperature is increased and helps in remolding of the polymer plastic. As the polymer is cooled, it hardens again retaining its shape.

Conclusion

Linear polymers are straight chains of polymers made up by carbon-carbon bonds. The occurrence of branching in this straight chain results in formation of branched polymers. Thermoplastics can be branched polymers which can be remolded by temperature change.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Knowledge Booster
Background pattern image
Recommended textbooks for you
Text book image
MATLAB: An Introduction with Applications
Engineering
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Text book image
Essentials Of Materials Science And Engineering
Engineering
ISBN:9781337385497
Author:WRIGHT, Wendelin J.
Publisher:Cengage,
Text book image
Industrial Motor Control
Engineering
ISBN:9781133691808
Author:Stephen Herman
Publisher:Cengage Learning
Text book image
Basics Of Engineering Economy
Engineering
ISBN:9780073376356
Author:Leland Blank, Anthony Tarquin
Publisher:MCGRAW-HILL HIGHER EDUCATION
Text book image
Structural Steel Design (6th Edition)
Engineering
ISBN:9780134589657
Author:Jack C. McCormac, Stephen F. Csernak
Publisher:PEARSON
Text book image
Fundamentals of Materials Science and Engineering...
Engineering
ISBN:9781119175483
Author:William D. Callister Jr., David G. Rethwisch
Publisher:WILEY