In science we had a great time experimenting with polymers. A polymer is a long
chain of hundreds or thousands of tiny molecules. A polymer can act like a solid or a liquid depending on
how it is handled. There are lots and lots of polymers in our world. Some are
natural and some are made by humans, or synthetic. Here are a few
examples of polymers:
• Plastic is one of the most common polymers.
There are lots of different types of plastics that have very different
properties - some plastics are flexible and can be bent (like a plastic bag or
a toothpaste tube) and some are very solid and would split or crack if you
tried to bend them (like a plastic plate or a CD).
•
Fabric such as rayon, nylon, and polyester
that are used for making clothes such as shirts, sweaters, and socks.
•
Natural polymers - one of the most important natural
polymers is DNA, the protein in your cells that makes you who you are! Some
other things that come from naturally-occurring polymers are cotton, silk,
rubber, paper, and leather. Rubber comes from a natural source -
a plant! Before it can be used though, it has to be processed.
Our polymers consisted of Elmer's glue, Boraxo hand soap, and water.
The directions. |
The materials. |
The chemical reaction starts. |
A polymer "rubber" ball. |
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