Condensation polymers

Nature of science:

Speculation—we have had the Stone Age, Iron Age and Bronze Age. Is it possible that today’s age is the Age of Polymers, as science continues to manipulate matter for desired purposes? (1.5)

• Condensation polymers require two functional groups on each monomer.
• NH₃, HCl and H₂O are possible products of condensation reactions.
• Kevlar® is a polyamide with a strong and ordered structure. The hydrogen bonds between O and N can be broken with the use of concentrated sulfuric acid.

Applications and skills:

• Distinguishing between addition and condensation polymers.
• Completion and descriptions of equations to show how condensation polymers are formed.
• Deduction of the structures of polyamides and polyesters from their respective monomers.
• Explanation of Kevlar®’s strength and its solubility in concentrated sulfuric acid.

Guidance:

• Consider green chemistry polymers.

• Does science, economics or politics play the most essential role in research, such as the development of new polymers?

Utilization:

• Syllabus and cross-curricular links:
• Topic 10.2—addition and condensation reactions
• Topic 20.2—synthesis techniques
• Option A.5—polymers

Aims:

• Aim 6: Synthesis of nylon could be performed.