Module: Module 7: Organic Chemistry
Understanding Condensation Polymers: Structure, Properties, and Applications
Drawing Polymer Structures: From Monomers to Chains
From Polymer to Monomer: Understanding Polymer Structure AnalysisDrawing Polymer Structures: From Monomers to Chains
Expert reviewed • 04 March 2025 • 3 minute read
Introduction
Understanding how to construct polymer structures from their monomer units is a fundamental skill in chemistry. This guide focuses on the systematic approach to drawing both addition and condensation polymers, essential knowledge for HSC Chemistry students.
Addition Polymers
Addition polymers form when monomers with double bonds combine through addition reactions. The process involves breaking the double bond to create new single bonds between monomers.
Steps for Drawing Addition Polymers
- Identify the double bond in the monomer
- Break the double bond
- Connect monomers using single bonds
- Draw brackets around the repeating unit
- Add subscript 'n' to indicate multiple units
Condensation Polymers
Condensation polymers form when two different monomers react, typically releasing a small molecule (often water) during polymerization.
Steps for Drawing Condensation Polymers
- Identify the functional groups that will react
- Remove the groups that will form the small molecule
- Connect the remaining monomer parts
- Draw brackets around the repeating unit
- Add subscript 'n'
Practice Tips
- Always identify the reactive functional groups first
- Pay attention to the orientation of side groups
- Ensure the polymer chain continues on both sides
- Check that all bonds are correctly drawn
Common Mistakes to Avoid
- Forgetting to break double bonds in addition polymers
- Incorrect placement of brackets
- Missing the subscript 'n'
- Incorrect bond angles