What's Gluep? Characterizing a Cross-Linked Polymer

The procedure presented here was adapted from an activity published by the Institute for Chemical Education. It is described in many science activity resources- some intended for young children. The product in the reaction is a gooey, stretchy, cross-linked polymer similar to "slime" produced by cross-linking polyvinyl alcohol and to commercially available Gak and Silly Putty. The activity can be done in the chemistry laboratory or at home. If done at home, the instructor may need to provide borax powder or solution. Students may both enjoy and benefit from doing this activity outside of class with a younger student.