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Topic 9c - Polymers - Coggle Diagram
Topic 9c - Polymers
Addition Polymers
Polymers are substances with high relative atomic masses made by joining up lots of small repeating unites called monomers
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Addition polymerisation is when many small alkene molecule join up to form a long chain molecule of repeating units
Lots of small alkene molecules open up their double bons and join together to form long chain molecules
The name of the polymer is made by just adding 'poly' in fron of the monomer name which is in brackets, ethen become poly(ethene)
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Condensation polymers
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A functional group is a group of atoms which are responsible for the chemical properties of a compound
When monomers react, bonds for between them, making polymer chains. For each new bon that forms a small molecule (like water) is lost
Polyesters
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The dicarboxylic acid molecules contain two carboxylic acid groups (-COOH) and the diol monomers contain two alcohol groups (-OH)
The molecle with the ester link has a functional group at the end which can react during condensation reactions making the chain longer
The series of these reactions is known as condensation polymerisation and the resultant polymer is called an ester
Alcohol and carboxylix acid functional groups react, losing a small molecule - water
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