Cross Linked Polymers
This module allows students to investigate and consider priorities of forces and interactions at the molecular scale by mixing different fluids with a cross linked polymer. The polymer (sodium polyacrylate) is similar to the structure found in cellulose and collagen. The interactions are dependent upon the charge distribution of the liquid molecules as well as temperature. By observing the different results with different fluids students can compare and contrast interactions driven by different types of atomic and molecular bonds.
Module Resources and Documents
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Module alignment to Next Generation Science Standards (NGSS) & Common Core State Standards (CCSS)
NGSS Alignments Cross Linked 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 through our Nano-Link Program. To be eligible to request materials simply create an account and fill in all the profile fields on your Profile. Once you have done so, you will be able to download lab instructions and teacher guides and also request shipment of lab materials to you. The full list of items needed for this module is below. Those available through Nano-Link are marked with an asterisk.
*sodium polyacrylate (Get SDS download from Flinn Scientific here)
Small cups or petri dishes