Difference between revisions of "Condensation Polymerisation"
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: '''Condensation polymerisation''' [[Chemical Reaction|reaction]]s are called '''condensation''' [[Chemical Reaction|reactions]] because they usually [[product|produce]] [[Water]], but they may also [[Product|produce]] other small [[molecule]]s such as HCl. | : '''Condensation polymerisation''' [[Chemical Reaction|reaction]]s are called '''condensation''' [[Chemical Reaction|reactions]] because they usually [[product|produce]] [[Water]], but they may also [[Product|produce]] other small [[molecule]]s such as HCl. | ||
: '''Condensation polymerisation''' [[Chemical Reaction|reaction]]s happen commonly in biological [[organism]]s. | : '''Condensation polymerisation''' [[Chemical Reaction|reaction]]s happen commonly in biological [[organism]]s. | ||
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====Forming Polyesters==== | ====Forming Polyesters==== | ||
: '''Condensation polymerisation''' [[Chemical Reaction|reactions]] which [[product|produce]] [[Water]] can happen when one end of a [[molecule]] carries an -OH [[Functional Group|group]] while the other end carries a -COOH [[Functional Group|group]]. These [[Chemical Reaction|react]] together joining the [[molecule]]s forming a [[Polyester]]. | : '''Condensation polymerisation''' [[Chemical Reaction|reactions]] which [[product|produce]] [[Water]] can happen when one end of a [[molecule]] carries an -OH [[Functional Group|group]] while the other end carries a -COOH [[Functional Group|group]]. These [[Chemical Reaction|react]] together joining the [[molecule]]s forming a [[Polyester]]. | ||
Revision as of 14:03, 19 January 2019
Contents
Key Stage 4 Higher
Meaning
Condensation polymerisation is a reaction in which monomers combine to form polymers producing a H2O or HCl molecule for each addition of a monomer.
About Condensation Polymerisation
- Condensation polymerisation reactions are called condensation reactions because they usually produce Water, but they may also produce other small molecules such as HCl.
- Condensation polymerisation reactions happen commonly in biological organisms.
Examples
Forming Polyesters
- Condensation polymerisation reactions which produce Water can happen when one end of a molecule carries an -OH group while the other end carries a -COOH group. These react together joining the molecules forming a Polyester.
- Condensation polymerisation reactions which produce Water can also happen when one molecule carries two -OH groups at either end of the molecule while the other molecule carries two -COOH groups. These two molecules react together joining the molecules forming a Polyester and producing Water.
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| Ethandioate and Ethandiol can react together in a Condensation Polymerisation. | A Polyester is formed along with Water. |
Forming Polysaccharides
- The condensation polymerisation reaction of monosaccharides produces a polysaccharide and Water.
- The monosaccharide glucose can bond in a condensation polymersiation reaction to produce starch or glycogen.
n x Monosaccharides → Polysaccharide + Water
n x Glucose → Starch + Water
Where 'n' represents an integer.
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| Glucose molecules react together in a condensation polymerisation reaction. | Starch is formed along with Water. |
Forming Proteins
- Condensation polymerisation reactions of Peptides (Amino Acids) produce Polypeptides (Protiens) and Water.
- Each Amino Acid has an NH2 group which acts as a base and an -COOH group which acts as an acid. These functional groups react to produce Polypeptides and Water.
n x Peptides → Polypeptide + Water
<chem>nH2NCH2COOH -> (-HNCH2CO-) + nH2O</chem>
Where 'n' represents an integer.
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| Glycine molecules react together in a condensation polymerisation reaction. | A Polypeptide (Protein) is formed along with Water. In reality Polypeptides are made of many different Peptides (Amino Acids) rather than the same one repeated. |