Wednesday, November 30, 2011

Polymer Lab


Image 4 a strand of polymer with monomers in repeating order
Image 3 Our Borox solution
Image 2 our polymer in real life
 Image 1 Our polymer
Hypothesis: If we combine the two solutions than it will become thick and  strong.

Results: When we started with the two separate solutions the borax solution looked like a water with dust in it as expected. The glue solution looked like what it was glue diluted with water. When we proceeded to mix 40 ml of water into the glue solution it the glue began to mix with the borax solution making a solid. It appeared that the glue started expanding out and bonding with the water it made a thick blob that was kind of like silly putty. When we started performing vaious tests with the material we noticed a few things.
For one test we were asked to see how the polymer reacted when stretched fast or slowly. When we stretched it fastly and it snapped quickly however when it was stretched slowly it was able to get longer and thinner before breaking. It was also bouncy as we observed coming up on the table. We had tried to mix food coloring in to give it a green appearance but we did not mix it well enough so it came out splotched with green. As time progressed the blob started to become dryer because it was losing water making it brittle and crumbly. When it had the water it was more elastic and stretchable.
We were also shown how the molecules bonded  on the sheet. the polymer looked like the image 1.We saw that the borox solution B(OH)4 So the bonding part of the compound was the b’s, o’s and h’s in it.
 
Conclusions: Judging by our results I would say my hypothesis was only partially right because I said it would get thick and strong which it did I however didn't say it would go all the way becoming a solid. The chemical change that the borax and water brought caused the glue to become a solid. Throughout this lab we never really had any thing go wrong. The only thing that was slightly problematic was the coloring and that didn't really affect our final product. The lab was very successful.
There are a lot of extensions I would like to try with this lab. We are just scratching the surface of not only this polymers but all of the other ones too. With this we saw some pretty basic bonding with Borox, water, and Glue but we could try and change the variables with more or less borox an we could see if just the borox and glue would have the same reaction without water. Also, we could do research to see if we could find any other chemicals that react with glue and we could test that if we can get the materials. For a final change I was thinking we could add temperature or take it away to see if that affects the chemical process.

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