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About CCA!
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Voiceover
Borax is added to a solution of polyvinyl alcohol. The borate ions react with the hydroxyl groups on the alcohol to form weak cross links between the polymer strands. A viscous gel is produced.
Discussion
The cross links are primarily hydrogen bonds, which will break and reform as the gel is handled, causing the gel to flow.
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Design, Text, and Demonstration:
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Kristin Johnson
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University of Wisconsin - Madison, Madison, WI 53706
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Video production, editing, and voice:
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Jerrold J. Jacobsen
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University of Wisconsin - Madison, Madison, WI 53706
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Greg Minix
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University of Wisconsin - Madison, College of Engineering, Madison, WI 53706
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Michael Killips
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University of Wisconsin - Madison, School of Nursing, Madison, WI 53706
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