Polyvinyl Acetate (PVA)

molecular model adrenaline

Polyvinyl Acetate: Keeping It Together in School

It’s a brand new back to school year with new opportunities, new tools, and more paper glue?? That’s right! Almost every back to school supplies list has paper glue or some form of adhesive. Do you know the ingredient that is often times used to make glue?

Polyvinyl acetate (PVA) is one of those low-profile polymers, unlike polyethylene or polystyrene. PVA molecule likes to hide and can usually be found between 2 pieces of wood or paper glued together. The reason for this is because PVA is the glue/adhesive between wood and paper.

PVA has a chemical formula of (C4H6O2)n. It’s an aliphatic rubbery synthetic polymer which belongs to the polyvinyl ester family. Polyvinyl acetate can often time be confused with polyvinyl alcohol since base hydrolysis can convert polyvinyl acetate to polyvinyl alcohol and acetic acid.

Polyvinyl acetate is prepared by the polymerization of the vinyl acetate monomer, through free radical vinyl polymerization of the vinyl acetate monomer.

molecular model adrenaline

The next time you take up your paper/wood glue to build some art and crafts, think of PVA!

What does PVA look like in Chemistry?

polyvinyl acetate molecule

Let’s Get Building! 

Using your Student Molecular Model Set from Duluth Labs let’s create Polyvinyl acetate! You’ll need:

  • 8 Carbon Atoms 

  • 4 Oxygen Atoms

  • 6 Hydrogen Atoms

  • 12 Small connectors (compact small bonds for hydrogen)

  • 12 Medium Connectors

  • 4 Long connectors

  • Molecular Tool (for Disassembly)

Put aside all the atoms and connectors needed.

Let’s Start Building with Our First Monomer PVA unit.

polyvinyl acetate molecule

Let’s Start!

Steps:

  • 1
    polyvinyl acetate molecule

    1.Get a carbon atom(Carbon 8)and using a medium connector attach this to the left of Carbon 8. Then use 2 small connectors to attach 2 hydrogen atoms to Carbon 8.

  • 2
    polyvinyl acetate molecule

    2. Then, using a medium connector, attach Carbon 6 to Carbon 8. Use a small connector to attach a hydrogen atom to Carbon 6 and a medium connector to the right of Carbon 6.

  • 3
    polyvinyl acetate molecule

    3. Using a medium connector, attach an Oxygen atom to Carbon 6.

  • 4
    polyvinyl acetate molecule

    4. Then, use a medium connector to attach a carbon atom (Carbon 3) to the oxygen atom.

  • 5
    polyvinyl acetate molecule

    5. Using 2 long connectors, attach another oxygen atom to Carbon 3

  • 6
    polyvinyl acetate molecule

    6. Finally, use a medium connector to attach a methyl group. This is a carbon atom (Carbon 1) with 3 hydrogen atoms attached using 3 small connectors.

  • polyvinyl acetate molecule

    Yay! We've just built our first Monomer Unit!

Note: Re-do the steps above by creating another PVA monomer unit.

polyvinyl acetate molecule
polyvinyl acetate molecule

Polyvinyl Acetate

Feel free to build a bigger PVA molecule by joining more monomer units together. This can be better represented with one of our larger Molecular Model Kits (MM-004 or MM-006).

polyvinyl acetate molecule

Great work! Now we have our newly-built Polyvinyl Acetate molecule

Place your molecule beside your Elmers Glue then share it with your science/chemistry teacher! Let them know you learned something new.

Feel free to show us how your Polyvinyl Acetate (PVA) turned out!

Comment and share pictures below!

Tune in next week for another Molecule of the week!

See you then xoxo :)

Duluth Labs

Afton Direct LLC


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