Module: Module 7: Organic Chemistry
Drawing Polymer Structures: From Monomers to Chains
From Polymer to Monomer: Understanding Polymer Structure Analysis
From Polymer to Monomer: Understanding Polymer Structure Analysis
Expert reviewed • 04 March 2025 • 3 minute read
Introduction
Understanding how to derive a monomer structure from a polymer is a fundamental skill in chemistry. This guide explains the systematic approach to identify and draw monomer units from polymer structures, focusing on both addition and condensation polymers.
Addition Polymers
Addition polymers form when monomers join together without losing any atoms in the process. The key to identifying these monomers is looking for repeating units in the polymer chain.
Steps to Identify Addition Polymer Monomers
- Look for the repeating unit in the polymer chain
- Identify the boundaries of one repeating unit
- Add double bonds between carbons where the chain was broken
- Add hydrogens to maintain correct valency
Condensation Polymers
Condensation polymers form when two different monomers react, typically losing a small molecule (often water) in the process.
Steps to Identify Condensation Polymer Monomers
- Locate the linkage points where monomers have joined
- Identify functional groups at these points
- Add appropriate groups to complete each monomer
- Account for any molecules lost during polymerization