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A solution of polyvinyl alcohol (PVA) can be made into a slime by adding borax solution, which creates cross-links between polymer chains. This experiment is easy to set up, providing the chemicals are available, and should take no more than about 30 minutes. It can be done by students in groups of two or three.
The first step of making really great slime is to make PVA Solution, a very easy process. Some recipes use PVA powder, the results are usually disappointing. Using PVA solution makes all the difference.
How to Make Super Slime. Pour ½ cup of the polyvinyl alcohol (PVA) solution into a beaker, jar, or bowl. If you want colored slime, add food coloring to the PVA solution and stir with a stir stick. Add 2 teaspoons of the Sodium Tetraborate (Borax) Solution into the PVA solution and stir slowly.
PROCEDURE: Polyvinyl Alcohol Slime. Materials needed: paper cup, 5 oz stirring rod Polyvinyl alcohol, 4% solution in water. (See “Preparation of Solutions” at the end of this investigation.) Borax (sodium tetraborate decahydrate), Na2B4O7 10H20, 4% solution, weight in water.
Prepare your materials. Step 1: Dissolve the Polyvinylalcohol in water and make a 4% solution. In a steel or aluminum saucepan add 1250 ml water (5 of the blue measuring cup). Add the entire 50 grams polyvinylalcohol to the saucepann.
Procedure: 1. Measure 2 tsp. of polyvinyl alcohol polymer solution into a cup. 2. Add 1/4 teaspoon of Borax solution. Mix well with a wooden stick. 3. Touch and try to pour the product. How does it feel? Can it be poured? 4. Working on waxed paper, roll the "slime" into a ball and try to bounce it. Does it bounce?
There are two methods for preparing a 4% aqueous solution of polyvinyl alcohol, the conventional heating method and the microwave heating method. The microwave method is much easier and less time consuming.
