1.- Why are carbon nanotubes and graphene currently considered as reinforcing additives for polymers? What effect do they have on the polymer? What is the mechanism by which they can enhance the Young’s modulus and tensile strength of a polymer?

1.- Why are carbon nanotubes and graphene currently considered as reinforcing additives for polymers? What effect do they have on the polymer? What is the mechanism by which they can enhance the Young’s modulus and tensile strength of a polymer?

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter50: Preparation And Properties Of Polymers: Polyester, Nylon, And Polystyrene

Section: Chapter Questions

Problem 4Q

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Question

2.- Kapton is the trade name of a polyimide

a) How would you synthesize this polymer?

b) During the first stage of the reaction, poly(amic acid) is formed. If you need to follow this stage of the polymerization, what spectroscopic techniques would you use and what groups should you focus on?

c) How would you form Kapton films, which can be used as support for solar sails?

d) What are the disadvantages of Kapton that have limited their use? Why does this polymer present this weakness?

Definition Definition Polymer produced by the addition of many same or different monomer units possessed by a double or triple bond. Additional polymers have high molecular weight.

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