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Monomers and Polymers. Ethene. This molecule is called POLYETHENE, and the process that made it is called POLYMERISATION. Ethene is called a MONOMER because it is just one small molecule. We can use ethene to make plastics…. Step 1: Break the double bond. - PowerPoint PPT Presentation
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04/19/23Monomers and PolymersMonomers and Polymers
Ethene
Ethene is called a MONOMER because it is just one small molecule. We can use ethene to make plastics…
Step 1: Break the double bond
Step 2: Add the molecules together at high temperature & pressure:
This molecule is called POLYETHENE, and the process that made it is called POLYMERISATION
04/19/23Another way of drawing it…Another way of drawing it…Instead of circles, let’s use letters…
Ethene
C C
HH
HH
C C
HH
HH
Ethene
H
C C
H
HH
H
C C
H
HH
Poly(e)thene
General formula for addition polymerisation:
C Cn C C
n
C Cn
H CH3
HH
C Cn
H CH3
HH
polythene
polypropene
Ethenemonomers
Propenemonomers
04/19/23
04/19/23
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