Journal Entry #2

Oobleck was mixed with solid cornstarch and water. It left stickiness and was smooth. This polymer was neither bouncy nor slimy. When we did the poke test slowly, my finger went halfway through, but when I did it quickly it just left a small mark. Following on, the stretch test made the oobleck split down slowly and when I did it quickly it made the oobleck brake into half. For the blob test, it took 13 seconds to turn into liquid. After testing the Oobleck, we tested the boogers. Boogers are mixed with15.3 grams of glue and 15ml of glue starch. During the observation, last lab, we discovered that boogers are stretchy and shining. They are not slimy or sticky. When we tried the slow poke test, the dent gradually disappeared and came back to its shape again. My fingers could go till the end of the booger. When we tried the quick poke test, there weren’t deep dents and my finger bounced off. The next data provided was how stretchy the booger was. When I quickly stretched the booger, it easily broke. But when I slowly stretched it, it stretched long. The last data we got was the blob test and the bounce test. In order for the boogers to turn flat, it took 3 minutes and 14 seconds. The booger was bouncy but it did not bounce as much as the other polymers.

Gloop is mixed with water, borax and glue. It is shiny, moldable and rubbery (not sticky). Also it breaks easily. In the slime rating test, the gloop kept its shape and it wasn’t slimy. In the slow poke test, dent was created and my fingers could go down very far in to the gloop. The quick pull test made the gloop easily break. In contrast, the slow pull test made the gloop easily stretch. When we did the blob test, it only took a minute and 5 seconds to go flat. In the bounce test, we noticed that the gloop was very bouncy.The next polymer we tested was the super slime. Super slime is made up of PVA solution and borax. Super slime is clumpy, bouncy, and watery. For the slime test, we concluded that it wasn’t very slimy. In the slow poke test, the super slime came back to its shape, after a certain amount of time. Also my Fingers went down until it made a hole. In a contrast, the quick poke test left a mark for three or two seconds but bounced back up.

Our group chose boogers for our basic polymers because it had the characteristics of stretchiness. Also it was more elastic than other polymers. However, I want to add some more characteristics that was shown from other polymers. For example, I need Gloop in order to make the prototype to be moldable.
In order to make my polymer to be elastic, stretchy, and moldable, I will try to add the right materials to the booger. To our base polymer, we will add more of laundry starch, to the required amount, because this will make the prototype (the booger) less sticky than it was before. So if the required amount was 15ml we will add 2ml more in to it. After this process we will divide this in to the first layer and the second layer. The first layer of our prototype will be stickier than the second layer because the first layer will be the one that will stick to shoes. In order to make this stickier I will add more PVA solution & glue. And for the second layer, I am going to add more cornstarch in order to make it thicken and to make it less sticky. The second layer will be the part that will stick to people’s skin.

To test the effectiveness of the prototype I will try to stick it to every places. Especially I will stick it on to various shoes because our main product will be used on shoes. To see if the prototype can actually stick for some time, I will time how long it takes to fall of from the place. Another way that I’m going to use to test the effectiveness of my prototype is to see if it can hold its shape for a certain amount of time. This will test how moldable it is. I am pretty sure that my prototype will come out in the best form.


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