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Chemistry
Condensation polymers
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Created by
Joe Dobson
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Cards (21)
What type of polymers are polyesters classified as?
Condensation polymers
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What are polyesters made using?
Ester links
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What is the process of forming polyesters from monomers?
Combine
dicarboxylic acid
and
diol
Dicarboxylic acid gives up OH group
Diol gives up H atom from OH group
Water molecule is formed
Ester link
is created
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What type of monomers are used to create polyesters?
Dicarboxylic acid
and
diol
monomers
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What does a dicarboxylic acid monomer contain?
Two
carboxylic acid groups
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What does a diol monomer contain?
Two
alcohol groups
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What do the colored rectangles in molecular diagrams represent?
The
rest of the molecule
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What happens to the dicarboxylic acid during polymer formation?
It gives up its
OH group
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What does the diol give up during the formation of polyesters?
A
hydrogen atom
from its
OH group
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What is formed when the dicarboxylic acid and diol combine?
A
water molecule
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What is the bond formed between the dicarboxylic acid and diol called?
Ester link
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What is a dimer in the context of polyesters?
A combination of two
monomers
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How do we represent repeating units in
condensation
polymers?
Using the letter n
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Why do we put 2n in front of H2O in the polymer equation?
Because two
water molecules
are formed
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Why are these polymers called condensation polymers?
They release
water
during formation
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What small molecule is typically released during the formation of polyesters?
Water
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What are the two functional groups required for condensation polymers?
Carboxyl
and
alcohol groups
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What is the name of the polyester formed from ethane dicarboxylic acid and ethane diol?
Poly ethyl ethanoate
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Why are polyesters generally biodegradable?
Bacteria can break down
ester links
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How do addition polymers differ from polyesters in terms of biodegradability?
Addition
polymers are generally
not
biodegradable
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What are the key characteristics of condensation polymers?
Formed from
monomers
with at least two
functional groups
Require at least two different functional groups
Release a small molecule (usually
water
) during formation
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