Introduction: Plastic Milk

About: I am married with two children. Spring, summer, and fall are my very favorite times of the year. I enjoy working in the yard, sewing, cooking, quilting, gardening, and creating. I do this to keep my sanity.

I was trying to find a recipe I could use to produce a chemical reaction for the Mad Scientist contest and the chemical reaction contest. I came across this one and thought is was interesting. For this tutorial I will be making Plastic milk.

Step 1: Recipe

Recipe ingredients:

  • 2 Cups Milk
  • 2 Tablespoons white vinegar

This recipe came from here: http://www.youtube.com/watch?v=pIvAl4lu1uA.

It is very helpful to view this video so you can see the process of making plastic milk.

It is a quick and easy project.

Step 2: Utensils

Utensils needed:

  • Liquid measuring cup
  • Measuring spoons
  • Coffee filters to absorb the liquid
  • Fine weave strainer
  • Spoon
  • Plate
  • Pan
  • Cookie cutters
  • Skewer not shown
  • Wax paper not shown, line the plate with wax paper.

Step 3: Measure/ Heat

Measure:

  • Measure 2 cups milk and set aside.
  • Measure 2 Tablespoons white vinegar and put it into a small glass reserving until later.
  • Line the strainer with 2-3 coffee filters or paper towels.
  • Line the plate with wax paper.

Pour the milk into the pan and heat on stove. Do not boil! Heat until almost too hot to touch but not boiling

  • Add vinegar.
  • Stir gently.
  • Allow it to separate into globs.
  • Stir again.

Step 4: Strain

Remove from the stove:

  • Place strainer in sink.
  • Pour Contents into the lined strainer.
  • Allow to drain a couple of minutes.
  • Carefully pull up the filter and gently press with your fingers to remove liquid from ball.
  • You might need to place it in another doubled coffee liner and squeeze again to remove excess moisture.
  • It should begin to form a paste.
  • Let it set 5 minutes.

Step 5: Molding

Method:

  • Gently roll the plastic in a tight ball.
  • Gently press flat to form shapes.
  • This part is tricky you need to work with it and try to keep it together nicely.
  • You accomplish this by pressing down and pulling toward the center with your hand.
  • Using the cookie cutters make the shapes.
  • Form a couple of balls if you desire.
  • Using the skewer poke holes where you want if you are going to make jewelry.

Step 6: Place Shapes on Plate

Place the shapes on the plate lined with wax paper:

  • Place the shapes on a plate.
  • Set in a safe warm area away from children and pets.
  • Allow to dry
  • Turn over after a few hours to allow the back side to dry.

Please note: I made a ball because they mentioned it was rubbery and I thought I would see if it bounced. We will see.

Step 7: Uses

Uses:

  • Allow to completely dry before working more with it.
  • You can make shapes from the plastic clay.
  • Paint it when it is dry.
  • Write on it.
  • Make jewelry.
  • If you can mold a perfect circle it bounces.
  • Embellishments for many things.
  • Gift tags.
  • Dog Tags.
  • Key ring tag.
  • Picture frames?
  • Dolls.
  • Game pieces.

This list is very long.
I can't wait until the paint dries so I can create something that I will post here when it is done.

Step 8: Sunshiine's Final Thoughts

This was a fun experiment. It would make a great craft project for the family.
What I did was turn milk into a solid through a chemical reaction known as a polymer molecule strand.
The individual protein strands within the milk and the vinegar solidified making plastic.

The plastic is based on a protein called casein - adding the acid causes it to unfold from its usual tangled form,and change into longer sections, which are the lumps that are removed to form the ball .
Casein-plastic used to be used to make shirt buttons.
Some cheeses (like the processed cheese slices) are made in a very similar way, so can be genuinely called "plastic cheeses".
I Painted the shapes thinking I would glue them on boxes for embellishments or make jewelry. I am very happy with the results.


Thanks you for stopping by and please check back soon as I am working on some interesting things to share.

Have a nice day!

Sunshiine

The Mad Science Fair

Runner Up in the
The Mad Science Fair