Module 2: Introduction to Polymer Microstructure
2.0 Introduction & Study Guide
In this module, we will discuss polymer microstructure and begin discussing structure-property relationships and will learn how structure and microstructure impact crystallinity (and whether or not a polymer can crystallize!), as well as how crystallinity and cross-link density can impact properties.
Read Section 2.1: Polymer Chain Microstructures in Chapter 2: Microstructure and Molecular Weight of the Polymer Science and Engineering eBook (or the equivalent in a print version).
Study Guide for Module 02: Introduction to Polymer Microstructure
By the end of the module, can you do the following?
- Explain the difference between a side group and a branch.
- Explain the impact of branching on a polymer’s ability to crystallize.
- Describe how increasing or decreasing a polymer’s percent crystallinity affects the following properties:
- Strength
- Stiffness
- Toughness
- Brittleness
- Optical clarity
- Barrier properties
- Solubility
- Explain network polymers and the two primary ways they are formed.
- Explain the impact of cross-linking and the cross-link density on polymer properties.
- Explain sequence isomerism.
- Identify stereo-isomerism (tacticity) in vinyl polymers, including atactic, isotactic, and syndiotactic.
- Explain the impact of tacticity on polymer properties, specifically a polymer’s ability to crystallize.
- Explain structural isomerism in diene polymers and how that can impact properties.
- Explain the four primary types of copolymers.
Get your own copy of the Module 02 Study Guide and Checklist (link goes to a “force copy” Google Doc).