■ What's Plastic?＞Kinds of Plastic
Kinds of Plastic
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| Do you know that plastic has various kinds? |
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I know the polyethylene terephthalate is used for PET bottles. The vinyl chloride is used for the eraser. |
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| Exactly. |
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| Mr.Usukawa, are these any other kinds? |
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| Of course! Well, let's look at several kinds of plastics. I suppose you've ever heard of some kinds of plastics somewhere. |
【Experiment】 〜Differences when plastics are heated〜
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| Then, let's make an experiment here. Let's compare differences when plastics are heated with the flame of a gas burner. Click on underlined words in the right side of the table below, and you’ll see experiment movies. |
| Polyethylene(PE) | Burning and melting |
| Polyethylene terephthalate(PET) | Hard to burn |
| Polyvinyl chloride(PVC) | It burns but stops burning if separated from a flame. |
| Polystyrene(PS) | Soot appears. |
| Polypropylene(PP) | It burns violently, melting. |
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I was surprised that the reactions when plastics are heated were different from one another. |
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| I suppose we use plastics properly by taking advantage of their own characteristics. Amazing! |