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Thermoplastic Polymer

Autopause

Materials

1 Plastic Beaker
1 Plastic Beaker
1 Plastic Cup
1 Plastic Cup
2 Tubes of Plastic Pellets
2 Tubes of Plastic Pellets
1 Thermometer
1 Thermometer
1 Tube of Technicolor Powder
1 Tube of Technicolor Powder

Instructions

STEP 1
0:00

Reach into your kit & pull out the bag that says Experiment 27. Take everything out of the bag and use the bag in place of your white mat.

STEP 2
0:35

Place the beaker in the center of the bag, and fill it with warm water to the 400 mark.

STEP 3
0:57

Next, carefully take out your thermometer and check the temperature of the water. The water needs to be between 60-62 degrees celsius. You can heat the cup in the microwave for 30 seconds if you need it hotter.

STEP 4
1:33

<span style="font-weight: 500;"Empty one tube of plastic pellets into the water and let it sit for 20 seconds until the pellets turn clear. It will start to stick together too.

STEP 5
2:47

Next, gently remove the melted plastic from the water, using your thermometer if needed to lift it out. If it’s too hot, just put it down to cool for a minute, then you can mold it into any shape you’d like.

STEP 6
4:38

When you are done making your shape, place it down on the plastic bag and let it cool back down into solid plastic for 30 minutes.

STEP 7
5:25

Now let’s do it again using the last tube of plastic pellets and some new hot water. This time, heat the water between 62-64 degrees celsius.

STEP 8
5:47

Now add the pellets and wait 20 seconds or until the pellets turn clear. Then, once its clumped together, take it out and drain off the excess water. Start by flattening into a mat.

STEP 9
6:49

Next, place it on your bag, open the tube of technicolor powder and sprinkle it all over the top. Then, roll the melted plastic up from end to the other to trap the color inside.

STEP 10
7:16

Now, start to kneed the plastic, start by pinching the ends together and stretching it back and forth to mix the color together with the plastic.

STEP 11
7:40

Once the plastic starts to get too hard, simply place it back into the water for 30 seconds then remove and let it cool if needed before starting to shape.

STEP 12
8:13

For this shape, start with a long tube and connect the ends to make a donut. Then press it down onto your bag and pinch in the sides so that its tall and narrow. Now, let it cool for 30 minutes.

STEP 13
9:15

To make your shape change color, first make sure your water is cooled down to 40 degrees celsius. Then, fill up the empty plastic cup with ice and water.

STEP 14
10:32

First, dip your plastic shape into the cold ice water for 10 seconds. Now, you can create stripes by sipping it back and first between the hot and cold water for 10 seconds at a time.

How It Works

In this experiment, we explored the fascinating properties of plastics. We began by melting plastic pellets in hot water. You see, plastics are made up of tiny molecules, and when heated, these molecules loosen up, allowing the plastic to become soft and moldable. We shaped the melted plastic into various forms, experiencing firsthand how these materials can change when exposed to different temperatures.

But the magic didn't stop there. We took things up a notch by adding technicolor powder to a shape and dunking it into ice water. The result? An astonishing color change! The technicolor powder reacted with the cold water, turning bright red. This happened because the plastic we molded is known as a thermoplastic. It can change its shape when heated and then return to its original form when cooled down. By switching between hot and cold water, we played with this transformation, creating a mesmerizing dance of colors and forms. Through this experiment, we uncovered the captivating science of thermoplastic polymers and witnessed firsthand how they respond to temperature changes.
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