Polymers
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What is condensation polymerisation?
Polymers which form when a small water molecule is removed
What are the 3 types of condensation polymers?
Polyamides - hexanedioic acid and hexamethylenediamine Polyesters - dicarboxylic acids and a diol Polypeptides - multiple amino acids
How can condensation polymers be broken down?
Hydrolysis - Addition of H2O. This happens because water is attracted to the polar regions of the polymer links, so it can be broken down.
Why are polyalkenes non-biodegradable?
They have no polar bonds so cannot be broken down
What are the uses of condensation polymers?
Condensation polymers contain polar bonds. Dipoles and hydrogen bonding can also form between separate polymer chains. This makes the useful for bulletproof vests and heat protective materials.
What is an example of a polyamide?
Nylon-6,6 Kevlar
What is an example of a polyester?
Terylene (PET)