POLYMERS

1. POLYMERISATION
BY WALEED
AL -BAHRI

2. What is a
polymer?
• Polymer are long chain giant
organic molecules assembled
from many small molecules called
monomers.
• More monomer molecules joined
in units of long polymer
• Example:
polyethylene

3. What is polymerisation?
• The reaction in which the large molecules
are formed is called polymerisation

4. Natural polymers
• natural polymer is a polymer
that results from only raw
materials that are found in
nature.
• Some of these natural polymers
include DNA and RNA.
• Cotton, DNA ,wool, wood etc.
are some of the naturally
occurring polymers.
This Photo by Unknown author is licensed under CC BY-SA.

5. Addition
polymerisation:
• In addition polymerisation,
the monomers are identical
alkene molecules, they
bond together by the
rearrangement of bond
without the loss of any
atom or molecule.

6. Characteristics
of Polymers
Ø Low Density.
Ø Low coefficient of friction.
Ø Good corrosion resistance.
Ø Good mould ability.
Ø Excellent surface finish can be obtained.
Ø Economical.
Ø Poor temperature resistance.
Ø Can be produced transparent or in different colours

7. Applications
of Polymers:
This Photo by Unknown author is licensed under CC BY.

8. Medicine:
Many biomaterials, especially heart
valve replacements and blood vessels,
are made of polymers
This Photo by Unknown author is licensed under CC BY.

9. Industry:
• Automobile parts, windshields for
fighter planes, pipes, tanks,
packing materials, insulation and
wood substitutes are all polymer
applications used in the industrial
market.

10. Sports:
• Playground equipment,
various balls, golf clubs,
swimming pools, and
protective helmets are
often produced from
polymers.
This Photo by Unknown author is licensed under CC BY-NC.

11. THANK YOU