Polymer Journal 1

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for clearer photo go to:

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A polymer is a macromolecule(large molecule with many atoms in it) which is created by a long chain of small molecules called monomers than held together by covalent chemical bonds. Polymers are made by using natural recourse or synthetic materials. Natural resources like water and oil that didn’t go through a man-made chemical reaction, while synthetic materials like polyester and nylon are created when natural resources go through a man-made chemical change. For example, one synthetic polymer would be polyester. Polyester is made from the natural resources coal, air, water, and petroleum in the beginning but then later on polyester was made from acid and alcohol. Polyester is durable, water-resistant, and a great insulator. That is why it is used for the making of many everyday materials like pillow fillings, quilting, outerwear, and sleeping bags. Another synthetic polymer would be nylon. Nylon comes from the natural resources crude oil, adipoyl chloride and hexamethylene diamine. Nylon is mostly used to substitute silk because it is elasticity, strong, lightweight, soft, and easy to dye. It is also used for clothing, umbrella, a kite, a coat, rope, and stockings. Polymerization is the proses of polymerizing which is when the manufacturer chemically combines two or more sets of small molecules called monomer.

websites used:

http://www.wisegeek.com/what-is-nylon.htm

http://www.madehow.com/Volume-2/Polyester.html

 

 

Polymer Journal 2

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clear photo;

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The goal of our polymer project is to design a polymer that is an insulator of heat. Our target audience would be any adults who enjoy drinking hot beverages like coffee or tea, and who lives in cooler climates, where their hot drinks get cooler faster. For example, those visiting German outdoor christmas markets who wish to enjoy a hot mug of gleuhwein or hot chocolate. We will be designing a polymer that can withstand and insulate heat. This polymer will help prevent users hand from burning, while at the same time reducing the amount of heat escaping so that the beverages will stay hotter for a longer period of time. Our polymer will need to be moldable, like the characteristics of oobleck or gloop which are also very strong and thick. Although the polymer will need to stay in its form after it is molded as well, so oobleck and gloop wont work. Our polymer also needs to be able to fit on to varieties of cups/mugs, such as the boot shaped mugs, so the polymer will need to have the characteristics of Stretch-tastic Slime or gloop, which is their stretchiness. However, our polymer needs to be easy to take off, so it can’t have the characteristics of Super Slime or Stretch-tastic Slime which is very slimy and sticky. In the end, our polymer should be moldable, strong, stretchable but not sticky, like that of a coffee sleeve. While a coffee sleeve could fit most paper cups, they wouldn’t be able to fit on to many mugs with handles were our polymer design would fit any mug. Nevertheless, what is special about our polymer is that everyone can design their own unique cup holder.

 

 

Polymer Journal 3

First we made prototype two and this is a picture of the process for making prototype two:

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then we tested if the polymer was strong enough so we rolled it into a ball and slowly poked one finger in to see it the finger touches the bottom. This is a picture of us testing our prototype two.

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Then after testing for prototype 2 we compared the first and second prototype. We found out that we liked our second prototype because it was thick and less slimy than the first prototype. this is a picture of both the finished product of both prototype one(blue) and prototype two (gray), while we  compared the difference and seminaries of they had.

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We are making a polymer that is able to be placed on to varieties of cups without breaking. Our polymer will need to have the physical properties of being moldable but not too slimy so it can fit and stay on any cup without leaving a trail of slime. Our polymer also needs to be stable so the polymer won’t change shape while on the cup. This polymer will need to be strong, so the polymer won’t break easily.

To test out if the polymer is moldable we will stretch out the polymer slowly until it gets from 0cm to 5cm so we can see if it is moldable. Then to test how slimy it is, we will place the stretched out polymer on a cup, then take it off to see if it is easy to take off and if it leaves a trail of slime. To test out if our polymer is stable enough we will roll the polymer into a ball then watch if the ball flattens out within 10 mins if it does flatten out we would have to make some changes. To test if the polymer is strong enough, we will be rolling the polymer into a ball, then poke one finger in the polymer, if the finger touches the bottom or breaks the polymer we would have to make some changes.

For our first prototype we first took the procurers of stretch- tastic slime than added 2g of guar gum, but our product was too slimy. For our second prototype, we made the stretch- tastic slime while also decreased 5 g of the amount of PVA glue, and at the same time added 2g of guar gum. The result of this polymer was closer to our plan, but it still needs to be stronger so next time we will role 3g of cornstarch onto this polymer.

 

 

Polymer Journal 4

 

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I felt the process of this polymer project was difficult because our original plan for our polymer was harder to achieve than we thought. Our goal was to have our polymer have the physical characteristics of being thick, rubbery, moldable, strong and not slimy, but throughout the plan, we had to change our goal many times. I found this project quite interesting because we got to learn the characteristics of each of the polymers, what they are useful for our design and what was not. Our first prototype was stretchy, and kind of moldable, but it was too slimy, too sticky, too thin and it didn’t hold its shape. So for the second prototype, we decreased 5 g of the amount of PVA glue, added 2g of guar gum to make it less slimy and rubberier.  The observations we saw was that the polymer was more moldable and not as slimy, but it still needed to be less sticky and rubberier. So for the third prototype we increased the amount, of guar gum by 2g, and also added 5gs of solid cornstarch to make the polymer, even more, rubberier and less sticky. Our third prototype met all of our goals with just a few improvements needed to we chose our third prototype as our final polymer design. This is how we made our third prototype; we started with using the recipe of stretch – tastic slime, then we decreased 5 g of the amount of PVA glue to make the polymer less gooey and slimy, then added 2g of guar gum to make the polymer thicker and rubberier, and in the end we rolled 5gs of solid cornstarch, and 2 more grams of gaur gum on the polymer to make it even thicker and stronger. Our final product was our third prototype, and it was most effective for meeting our goal because of how strong, thick, rubbery, moldable, and not slimy it was. It was the only one out of our 3 prototypes that met all of our altered standers.