ipl-logo

Linear Polyester Lab Report

421 Words2 Pages

The two polyesters produced in the first part of this experiment are a linear structured polyester with thermoplastic properties, and a cross-linked polyester with thermosetting properties. The linear polyester was produced from the reaction of phthalic anhydride with ethylene glycol. Due to the fact that both of these components have only two functional groups, the polymer chain is linear. As shown in Picture 1 above, the product formed from the reaction is a solid and resulted in a dark color change. The solid structure is form after cooling and the color change represented the presence of a reaction. As shown in Table 1, the linear polymer was not brittle and was not viscous after cooling. The cross-linked polyester with thermosetting properties was produced from phthalic …show more content…

As shown in Table 1, Glyptal was a brittle product with some viscous liquid. In the second part of the experiment, the polyamide Nylon-6,6 was produced. There are two processes used to create high molecular weight polymers, step-growth and chain-growth. These two categories of polymerization can be used to produce nylons. Step-growth and chain-growth both begin with monomers which combine to form oligomers and then polymers. Unlike step-growth, the monomers in chain-growth do not exist as oligomers for a long period of time, but rather combine rapidly to form polymers. If a small molecule byproduct is produced along with the final product, then the polymerization is known as a polycondensation. If no byproduct is produced, then the polymerization is known as polyaddition. In this experiment, polyamide nylon-6,6 was produced and characterized as a step-growth polycondensation that produced water as a byproduct. In order to produce Nylon-6,6, hexamethylenediamine and adipoly chloride reacted in a solution of 20% sodium hydroxide. Adipoly chloride was used rather than dicarboxylic acid because it is more

Show More
Related
167 Words | 1 Pages

Paper airplane lab The phenomena of our paper airplane lab was by adding mass to a paper airplane it affected the time span it flew. The mass that was added in our experiment was paperclips, the manipulative variable or the change. I observed during this experiment how the more mass we added the quicker the plane fell to the ground. To begin, we added no paperclips, thus our plane flew for the longest, at an average time of 2.31 seconds.

Read More
753 Words | 4 Pages

Lab Number One Michael DeMart Lynn University Lab Number One Humanity is the master of innovation with millions of people living in superb living conditions around the world today. But as we examine the past it is evident that millions of people lived in harsh conditions especially those who lived by the arctic circle, for example, the Sami people who live in northern Sweden. A question that arises is how did these people construct their huts to keep warm in the winter months where the outside temperature gets cold as -30 degrees Celsius. So why did these scientists decide to conduct this study?

Read More
1591 Words | 7 Pages

From developing medicines to understanding rare elements, the scientific method has been the used to perform experiments in a concise manner. The experiments may have varied through the centuries, but the act of creating and testing a hypothesis continues to stand as a pillar for the scientific method. The main purpose of this lab was to demonstrate the steps taken to use a hypothesis through testing 2.5% ferric chloride and its effect on seven different compounds.1 The results showed that 2.5% ferric chloride had a visible chemical reaction with compounds containing a phenol functional group. The chemical reaction was noted via a color change from a dark yellow to different shades of blue/purple.

Read More
945 Words | 4 Pages

Introduction Physarum is a yellow colored single celled organism that holds a large amount of nuclei and can release tubes while it finds food (Costello, 2013). The physarum also enjoys cool damp areas that are wet where it feasts food such as dead matter, bacteria, and oat flakes (Miranda, 2013). Physarum’s growth can be affected by exposure to mold, light, and weather inclements. The physarum reacts to different types of stimuli which can also affect its growth. The physarum can be affected by sound, light, and electrical activity because of when it forages, it releases electrical activity that produces its reactions (Miranda, 2011).

Read More
488 Words | 2 Pages

Major unknown #202 was given out by the instructor, and the unknown bacterium was streaked out on a Trypticase Soy Agar tube and plate to inoculating the bacterium and incubating. After incubated and grown the morphology was observed and several Gram stains were performed to determinate if the bacterium were gram positive or negative, and the morphology of the bacterium. The Gram Stain of my major unknown #202 was determinate to be Gram negative bacilli, and was double checked by the Gram check slide. Also I noticed that my bacterium was a facultative anaerobe and according to my results of endospore test, my bacterium has not endospores. So according to the list of possible major unknowns provided by the instructor, I narrow my bacterium thru

Read More
2488 Words | 10 Pages

Abstract Much of the biological study depends on specie identification, yet many of the taxonomic identifications are flawed. Many scientists are convinced that in order to create best identification is to use DNA barcoding. Few established genes that are globally accepted are rbcL and Matk in chloroplast for plants and Co1 mitochondrial DNA for animals. In order to prove this, we will perform a study where we receive an Unknown sample and by extracting the DNA from that unknown and creating more copies we will perform gel electrophoresis where we will sequencing the gene of the unknown and identify the sample using phylogenetics, Further more we will identify the taxonomy.

Read More
1116 Words | 5 Pages

Feasibility of Group 5’s Paper Airplane Introduction Purpose The purpose of this report is to determine the feasibility of using the paper airplane created from group 5’s instructions in the Iowa State paper airplane competition. Problem Jackson hopes to win the annual Iowa State paper airplane competition and must determine the best paper airplane to use.

Read More
696 Words | 3 Pages

The experiment that we performed was polymerase chain reaction. We performed it to find what sample matched the unknown sample of DNA that we found at the crime scene. The hypothesis was one of the samples would match the unknown sample. We compared the three known samples against the unknown sample of DNA.

Read More
1092 Words | 5 Pages

SCIENCE 165-516 Absorption of water by two different paper towels experiment MIRA ALI 201412954 SUBMITTED TO : MRS. VIDHYA SUNIL Introduction: My experiment is about investigating the absorption ability of two types of paper towels in the water, there are many brands of paper towels available , each claiming to be the best , how do we prove or disprove these claims ? Paper towels are very useful when it comes to cleaning , in addition paper towels are used to dry your hands and wipe tables , so we must know which good brand we must use. Paper towels contains small spaces that both liquid and air can pass through.

Read More
162 Words | 1 Pages

The lab was performed using the thermometer, the graduated cylinder, the scale, the pipet, and many more lab equipment. There were four separate parts. The first part of the experiment consists of examining the meter stick, and using the meter stick to measure the length and width of the lab notebook. The second part of the experiment consists of observing the graduated cylinder. You had to fill it with water and estimate the closest value to the measurement on the side of the graduated cylinder.

Read More
716 Words | 3 Pages

All procedures for this lab was obtained from the Marshall University BSC 121 Principles of Biology for Majors Laboratory Manual (Weinstein, 2015). On September 22, students in biology 121 section 101 obtained nine pots to plant their respected peas. Once the pots were obtained, students placed paper towels in the bottom of the plots to keep the vermiculite from falling out. When the paper towels were placed in the pots, they were then filled up ¾ of the way full with vermiculite, and were watered adequately. Four shallow holes were then created with a finger, and were filled with peas.

Read More
314 Words | 2 Pages

The purpose of this lab was to familiarize the students with the Scientific Method. The Scientific Method is a set of rules that Scientists from all different fields use to create and develop theories. The basic steps of the Scientific Method are: to first observe and gather data, then create a critical question, next form a hypothesis, then create and conduct an experiment multiple times, next you will evaluate the results and or reject the hypotheses, finally if your hypothesis is correct you will publish your results. We used these steps to determine what the inner workings inside a particular black box. Our TA began by showing the class a particular black box.

Read More
366 Words | 2 Pages

Experiments are performed all around us every day. Whether they’re done to find out if a cancer curing medicine works or to find out how fast water evaporates at certain temperatures. However, what separates a simple experiment from a professionally done experiment is the use of the scientific method. The scientific method is a series of organized steps which an experiment is done. The scientific method helps you plan, predict, research and conclude your findings.

Read More
718 Words | 3 Pages

The purpose of this experiment was to determine the identity of isolated separated compounds using thin layer chromatography and column chromatography methods. In part A, four TLC were ran once each with ethyl acetate, hexane, toluene, DCM as solvent to separate a mixture. The stock solution is a mixture of benzophenone, biphenyl, and diphenyl methanol. The last trial include the comparison with the standard using the best solvent.

Read More
929 Words | 4 Pages

In biology, one way or another everything is related or connected. Cells are the power of all living things and without them life would be relatively short or there would be no life at all. When biologist think of cells they think of the process of how cells functions and what stages they go through. The cells that go through meiosis are the sex cells that produce the sperm and the egg. Using the basic knowledge of the meiosis cell cycle scientist used that as their background knowledge to perform experiments that they had questions over genetics, cells, DNA, or how life functions.

Read More

More about Linear Polyester Lab Report

Open Document