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Ring Polymers

Module Abstract

This version of sodium polyacrylate is the type often found in diapers and is a different atomic structure than that of the cross linked polymer.  {Note:  This difference can be observed by adding the same amount of water to the same amount of each polymer.} This polymer structure captures liquid in a ring structure and is dependent upon the relationship between cohesive (between like molecules) and adhesive (between unlike molecules) forces.  This module can also be used for students to practice math skills by calculating number of water molecules absorbed, surface area and so on.

Module Resources and Documents

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Module Information, Procedures and Resources

PowerPoint Slides 

Module alignment to Next Generation Science Standards (NGSS) & Common Core State Standards (CCSS)
NGSS Alignments Ring Polymers

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List of Required Materials

Most necessary classroom materials for the experiment connected to this module are available to educators at no cost until May 1, 2020.  A user account is required to download material and request supplies: simply fill in all the profile fields on your Profile. The full list of items needed for this module is below.  Those available through Nano-Link until May 1, 2020 are marked with an asterisk.

REQUEST MODULE SUPPLIES (offer good until May 1, 2020)

*Diaper Polymer
Small cups or petri dishes