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Polyvinyl Acetate: Vinyl Acetate Set Solid by Sunlight
Klatte and Rollett (Griesheim-Elektron, patent 1917) found that vinyl acetate left in sunlight, or under a mercury vapour lamp, turns into a clear, colourless solid like celluloid. It can be cut and turned, softened in hot water and moulded, and dissolved in ethyl acetate as a lacquer. It is the polymer behind PVA glue.
The picture: our diagram, liquid to solid in the light.
Intermediate
Days in the sun
Instructions
1
1
Fill a clear vessel
Fill a clear vessel
Pour vinyl acetate into a clear glass jar and close it (our vessel). Its vapour ignites easily: no flames near it.
Materials for this step:
Vinyl Acetate Monomer500 gTools needed:
Glass Jars with Lids
Digital Kitchen Scale
Chemical-Resistant Gloves
Chemical Splash Goggles2
2
Set it in the light
Set it in the light
Stand the jar in direct sunlight, or under a mercury vapour lamp. Stronger light and warmth make it set faster; it first turns syrupy, then solid.
Tools needed:
Glass Jars with Lids3
3
Take out the solid
Take out the solid
The product is clear, colourless and odourless. Cut or turn it, or soften it in hot water and mould it; it hardens again as it cools.
Tools needed:
Craft Knife
Double BoilerChemical-Resistant Gloves4
4
Monomer in, polymer out
Monomer in, polymer out
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Materials
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Tools Required
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