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About CCA!
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| Aniline-Formaldehyde Resin |
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Voiceover
A solution of aqueous formaldehyde is poured into a beaker. The formaldehyde is mixed with a solution of aniline hydrochloride. In a few seconds the mixture turns red and a solid, red rubbery polymer forms.
Discussion
A solution of aqueous formaldehyde is poured into a beaker. The formaldehyde is mixed with a solution of aniline hydrochloride. In a few seconds the mixture turns red and a solid, red rubbery polymer forms. The reaction involves electrophilic addition of protonated formaldehyde to the ortho or para position of aniline. Further condensation produces a cross-linked polymer connected by methylene bridges analogous to the formation of the phenol-formaldehyde polymer.
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Design, Text and Demonstrator:
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Gary Trammell
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University of Illinois at Springfield, Springfield, IL 62794
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Videographer/Editor:
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Steve Dykema
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University of Illinois at Springfield, Springfield, IL 62794
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Voice:
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Margaret Biddle
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University of Wisconsin - Madison, Madison, WI 53706
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Audio Production:
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Greg Minix
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University of Wisconsin - Madison, College of Engineering, Madison, WI 53706
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Jerrold J. Jacobsen
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University of Wisconsin - Madison, Madison, WI 53706
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