Do you want to show your students or kids a fun experiment that is safe, easy to clean up after, and yields dramatic results?You can make a plastic-like material with a little bit of milk and vinegar.You can make whatever you want out of the plastic after the experiment is done.
Step 1: The necessary materials should be gathered.
You will need a stove cookpot or microwaveable container, cotton cloth or mesh strainer, a bowl, paper towels, and adult supervision for this experiment.If you want to make more plastic or do this experiment more than once, you will need more liquid.Heavy cream will work better than 1% or 2% milk.The cotton cloth will work with an old T-shirt.Adult supervision is recommended when working with hot liquid.
Step 2: There is 1 cup of milk in this picture.
Take a cup of milk and measure it out.The experiment can be done in the microwave or on the stove.If using the microwave, use a microwave-safe container.If you use the stove, pour the milk into a cookpot.The milk should be just under boiling.If you have a candy thermometer, make sure the temperature is at least 120 F.The milk can be heated on the stove.An adult can help you with this step.For about 2 minutes, put your microwave on 50% power.Milk can be microwaved in 30 second intervals until it is hot.
Step 3: Add 4 cups of milk and stir.
When the milk is still hot, add all of the vinegar to the container and stir for about a minute.clumps will start to form as you stir.The milk probably wasn’t hot enough for the reaction to happen.Try again with hotter milk.There is a change in the milk’s pH.acetic acid in the water causes the milk to be more acidic and the casein to unfold and reorganize into a long chain.
Step 4: The milk should be poured through the strainer.
If you are using an old T-shirt, wrap it around a jar or bowl.Put a rubber band in place.Simply place the strainer on top of the bowl if you are using a mesh strainer.When the milk is cool, pour it over the strainer and let it drain.The clumps remain on top of the strainer as the milk leaves.
Step 5: Put the clumps on paper towels.
Wrap the curds around the rubber band if you are using a cloth.You have to squeeze the bag to get as much liquid out as possible.If you use a strainer, scoop out the curds from the paper towels with your hands or a spoon.The paper towel is a good place to squeeze the curds.
Step 6: The necessary materials should be gathered.
If you want to make something out of your plastic, you need to do it in the first hour.You can use a variety of decorative materials.You can use sculpting tools to get into it.Once the plastic is completely dry, paint and markers can be used.
Step 7: The casein dough should be kneaded.
You will need to squeeze all of your food into a dough-like substance before you start.The dough should be kneaded well once it clumps into one blob.It is easy to shape and form when you work it with your hands.Wait until the curds have cooled completely before handling them.
Step 8: The dough can be sculpted using cookie cutters or molds.
You can cut shapes with cookie cutters once the dough has been well kneaded.The dough can be pressed into a mold to make a shape.Set it aside to dry after removing it from the mold.You can either sculpt the dough with clay or play with it.If you want your shapes to be the same color and you don’t want to wait for them to dry and paint them, you can add food coloring.Put on gloves, add some food coloring to the dough, and work it until the color is even.Food coloring in gel works better than liquid.
Step 9: Plastic beads can be used for jewelry.
Use a straw to poke a hole through the center of the dough.You can string the beads into a necklace or bracelet.As the beads are still wet, add glitter and it will stick.To dry the beads, set them aside.Make sure they are completely dry in a few days.
Step 10: Wait at least 2 days for the plastic to dry.
It will take a few days for the plastic to dry out.If you don’t want to do anything else with the plastic, leave it alone for a few days.You need to wait until it is dry to use it.You can paint it or decorate it once it is dry.
Step 11: You can paint or color.
You can color your creations with craft paint or permanent markers.You have to wait until the plastic is completely dry before adding paint or color with markers.You can play with your sculpted creations once the paint is dry.