PLASTICS

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Polymers
Many Parts
PLASTICS
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1 2 3
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H
H
H
H
C
C
C
C
H
H
H
H
H
H
H
H
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C
C
C
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C
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H
H
H
H
C
C
C
C
-
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C
C
H
-
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H
H
H
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C
C
C
C
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H
H
H
H
C
C
C
C
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C
C
H
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H
H
H
Original ethylene radical
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C
C
C
C
C
C
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H
H
H
H
C
C
C
C
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C
C
H
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H
H
H
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C
C
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POLYESTER
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Meet Ester
O
C
C
C
O
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Nylon man-made polymer
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NYLON
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Nylon in Tires and Rope
and Clothes
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Nylon was discovered in 1935. The name nylon is
derived from two cities where it was discovered
namely New York (NY) and London (LON).
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Condensation Reaction
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NylonNylon was discovered in 1935. The name
nylon is derived from two cities where it was
discovered namely New York (ny) and London (lon).
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NylonNylon was discovered in 1935 and is a
polymer which has repeated functional group of an
amide. An amide unit is ---CO---NH---. This is
the reason why nylon is called a polyamide. The
name nylon is derived from two cities where it
was discovered namely New York (ny) and London
(lon). Preparation of nylonNylon is made from
dicarboxylic acid called adipic acid. Adipic acid
is actually tetra methylene dicarboxylic acid.  A
diamine called hexamethylene diamine is added to
adipic acid. The raw materials required for the
manufacture of nylon are Adipic acid of tetra
methylene dicarboxylic acid Hexamethylene
diamine Polymerization takes place and water
along with a polyamide that is nylon is the end
product.  The reaction is shown below. The COOH
or the carboxyl groups from the acid react with
the NH2 or the amino group from the diamine to
form an amide structure, which is a polymer. The
number n shows that there are very large
numbers of ---CO---NH---- groups. This is an
amide structure hence the product is called a
polyamide. The polyamide is forced through
spinnerets to get threads of nylon. The polyamide
can also be cast into different shapes by moulds.