Wednesday, March 9, 2011

Polymer Lab Group Investigation

Joey and I set out to find if adding or subtracting glue to the original polymer we made last Tuesday would change the physical properties of the polymer. We started out like the normal ab, but we poured glue into two beakers instead of one. One beaker had 20mL and the other had 60mL. We added the same amount of borax to each of the beakers. When we mixed the glue and the borax, the beaker with the larger amount of glue mixed throughout, but the beaker with the smaller amount still had borax left in it.

Joey and I had concluded that the monomers in the glue bound to the maximum number of monomers in the borax, and the polymer formed had become fully saturated and could no longer absorb any of the borax. The extra glue polymer was more easily moldable and it resembled more of a dough or a clay, while the other one was more filmy and harder to mold. We found that the bounce of the polymer that had more glue was 2.7cm higher than the original polymer made last Tuesday. We also refrigerated the polymer, and just as it had on Friday, the bounce went up by .5cm. However, one thing that was different about the extra glue polymer was that it became misshapen in the fridge; our guess was that the extra glue had made the polymer more of a liquid than it previously was. Due to the misshaping in the fridge, it bounced all over the place during our second rebound test.

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