The Polymer Revolution.

This is a short PDF I put together on The polymer revolution. I haven't included anything here about HDPE's or Teflon but I think I might upload that seperately.

It is mainly a brief overview of dissolving polymers, Cracking, Alkenes, Fermentation, Ester exchange process and fraction.

If anyone finds it useful I will upload some others.

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  • Created by: Lewis
  • Created on: 05-05-11 22:09
Preview of The Polymer Revolution.

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The polymer
By Lewis Boyles-White

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Chemistry ­ Crude Oil, Polymers, Alcohol
What are they?
Alkenes can be used to make polymers. Polymers are very large
molecules made when many smaller molecules join together, end-
to-end. The smaller molecules are called monomers.
Alkenes can act as monomers due to double bond
· Ethene can polymerise to form poly(ethene), which is also
called polythene.…read more

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How are they classified?
Polymers are usually classified in two groups:
Thermosetting ­ Char when heated
Thermosoftening ­ Softened when heated
In order for it to be useful to us, crude oil is broken down in oil
refineries into its component parts, known as fractions, and these
can then be used for many different purposes.
Fractions that are produced by the distillation of crude oil can go
through a process called cracking. Produces: alkanes and alkenes.…read more

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For use in cars and other vehicles, it is usually mixed with petrol.
Ethene + steam Ethanol
C2H4+ H2O C2H5O
C6H12O6 2C2H5OH + 2CO2
*More than 90% of the world's ethanol is made by fermentation.…read more

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Dissolving polymers
It is the OH group that makes the polymer soluble in water (the
OH can interact with the OH in water).
· The extent of the ester exchange can be controlled by
· The plastic's solubility depends on the percentage of ester
groups which have been removed.…read more

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So why can Ethanol Dissolve?
The OH on the end is slightly negative. Water is polar too, the
hydrogen's are positive and the oxygen is negative. Because both
of the molecules have a net dipole movement (they have positive
and negative ends) they attract each other and dissolve each other.…read more


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