I believe that prototype 7 was the most successful.
We wanted a product that could become a personal, moldable, reusable, environmentally friendly bicycle handle.
We tested it for hardness, stickiness and time taken to flatten. It was given 3/5 for hardness, 1.5/5 for stickiness, and 4/5 for time taken to flatten.
Other less successful tests include test 3, which is given 2/5 for hardness, 0/5 for stickiness, and 2/5 for time taken to flatten. And test 4, with a hardness of 3/5, a stickiness of 5/5 and 3/5 for time taken to flatten.
Based on our ideal product, we set an ideal score of about 2-3/5 for hardness, 0-1 for stickiness, 3-4/5 for time taken to flatten.
Our polymer is also a natural polymer, because it is made up of natural materials like rubber, starch and water. Oobleck is a suspension, which is a mix between a solution and a precipate. It usually settles after time making it different from a precipate, and the solute does not exist as a solid, and solvent and solute are homogeneously mixed, making it different from a solution.
Thus, the most suitable prototype is polymer 7, since it fits the ideal product’s description the best. Even though test 4 is as hard and takes about the same time to flatten, it is too sticky. Test 3 is too crumbly, meaning it is not moldable, so even if it is the right hardness and stickiness, it’s too quick to flatten.
Product pitch to dream on team
Good afternoon teachers and friends, today my teammates, Jisu, Shelly and I are going to present you our polymer product, Oobike.
So first, what are polymers?
Polymers are large molecules that is made of a chain of smaller molecules (called Monomers) that are joined together by covalent bonds. Monomer chains can be linear (one straight line), branched (one line with smaller lines extending in other directions), and cross-linked (lines with other lines linking them)
Our goal is to make a bicycle hand grip that can be easily molded to fit the needs of different hands, making it much more comfortable. We have found that people who ride shared bicycles often dislike the handgrip, since it had been used by other people, and thus, is quite dirty. They also dislike it because of the uncomfortable grip, so, by using Oobike, we can easily prevent these problems.
Haozhe: Oobike was made in 3 steps
Measure 20 grams of corn starch, 15 ml of water, and 0.5 grams of guar gum.
Add the ingredients to the mixture
Stir until the mixture is consistent
And then oobike is ready!
And because the in
The properties of Oobike is that when pressured, it becomes harder, and when pressure is released, it becomes softer. It has these characteristics because it is a non-Newtonian fluid and does not follow newton’s law of viscosity.
This is suitable for our goal because people can easily mold it before use, and it can be taken on and off easily. It is reusable, environmentally friendly, due to it being made out of guar gum, starch and water, which are all natural materials.
Shelly: Our target audiences are
- People who uses shared bicycles
- People that dislike their bicycle
- People who wants their own bicycle grip
Lastly, People that feels the original grip uncomfortable.
Haozhe: This is a video of our designed product Oobike made by Haozhe, hope you enjoy.
Haozhe: The funds will be used for designing and manufacturing environmentally friendly package, improve the smell of Oobike, and for an anti-drying agent that would stop the polymer from drying after some time
These are the citations
Personally, I think that our product pitch was quite successful. It was presented fluidly, and the judges seemed interested in our product. We presented truthfully, not covering up our product’s weaknesses, and instead using it as an idea for improvement.
I also managed to make a more infomercial feeling second infomercial. I managed to balance my time for capstone and science, making our video less funny, but still interesting while promoting our product and how to use it well.
Our product is very sustainable. It is reusable, only dries out after about 30 minutes, and can be applied a little water to be reused.
It is made out of mainly corn starch, which is made out of corn kernels, so it is very natural and environmentally friendly.Other ingredients are guar gum and water. They are also natural, so our product is sustainable.
“Suspension (Chemistry).” Wikipedia, Wikimedia Foundation, 4 June 2019, en.wikipedia.org/wiki/Suspension_(chemistry).
“The Search Engine That Plants Trees.” Ecosia, www.ecosia.org/images?q=corn kernal#id=D9722EB71143C66211824ECD1A95AB454576998D.
“What Is Thermoplastic Rubber? (TPR).” KMA SA Marketing, 5 Sept. 2017, www.kmasa.co.za/thermoplastic-rubber-tpr/.