Tag Archives: Polymer Project

Polymer Journal Entry #4

Through a tough process, we finally created our end product – The Impeccable Glue. To reach this, we had to first brainstorm what we wanted our product to do and it’s characteristics. When we were first designing our polymer, we decided that the end product should be moldable, a bit sticky and harden overnight. We all received a sheet of paper, with the information about all the different characteristics each material contributes. I had picked corn starch because I wanted something less watery. I picked PVA solution because I wanted something sticky. Another thing I chose was liquid starch to add a little bit of liquids to the prototype. The last thing I chose was guar gum, to add a bit of elasticity to the polymer. When I was making all of the different prototypes, I realized that making a polymer with all of those characteristics was hard. I had tried a few different prototypes and had then turn out too slimy, too sticky, too bouncy. Sometimes it would be perfect; however, overnight it would harden and break.

While making the different prototypes, I learnt what ratio of ingredients I would need in order to make the polymer a certain way. I learned that too much liquid starch causes a much slimier polymer, so you need to add more PVA solution and around the same amount of corn starch to create a sticky moldable polymer. I also discovered that when making the guar gum, the water and guar gum just weren’t mixing properly so it didn’t mix in well with the polymer. So instead we would add dry guar gum straight to our polymer. It mixed way better and worked really well.

On presentation day, I learned that most polymers won’t turn out how you want them to. Sometimes something unexpected will happen and surprise you. Also you can’t always have all the characteristics you want in a polymer, sometimes you have to compromise. But overall, the experience was great and our polymer ended up doing what it was supposed to.

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Polymer Journal #1

For the Sugru project, my group has to design a polymer to prevent objects from breaking. Since we are living in an electronic era, I thought a common object that most people have are cellphones. Now, teens tend to use mobile phones instead of landlines to communicate with each other; however, because some teens are clumsy, they are more likely to drop their phones causing them to crack. Our group decided we wanted to prevent poor phone screens from cracking through a protective case.

 

The basic structure of this case will be a small rubber that you put on the corners of your phone, overnight it will mold and stay in shape. We were hoping to create something cushy and soft, but durable. It wouldn’t be bouncy because that would cause the phone to jump all over the place. Another characteristic is that once you take it off the phone, you can mold it into another shape for all phone shapes and sizes. It won’t be like other cases because this one will provide much more support than a plain plastic case, plus it would mold to your fingers so it wouldn’t drop as much.

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Increase in Cell Phone Usage