Table 4. This is the main polymer family most widely used as the raw material (cont.)
Polyamide
Held by amide links (repeating units of amide) - wears resistance
- good fatigue strength
- good sliding properties Nylon
- clothing
- carpets
Kevlar
- bulletproof vest
- boat construction
Polyethylene
Resin made from the polymerization of ethylene - antioxidant
- good toughness
- high density - packaging
- piping
- containers
- bags
Mayer (1993) suggested a design solutions to minimize mass or cost of fiber uses. In his design, he stated that for every complex loading to be made, the designer need to work closely to the fabricator and material supplier. He used the terms of “Mass versus Cost” since he considered the engineer or the designer always have particular matter to do with the budget or
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Polymerization of propylene through the catalyst. The common and usual catalyst used is Ziegler-Natta catalyst which it is a transition metal catalyst in the polypropylene and titanium industry (Malpass & Band, 2012).
Figure 2: The reaction of propylene in assist of catalyst (Malpass and Band, 2012) Again, according to Malpass and Band (2012), the polypropylene is preparedly in such uncertain range composition because different in the microstructure, monomers and have a series of molecular weight. It is determined by the selective catalyst, the adequate conditions in polymerization and optional process. Further view by van der Ven (1990) of how polymerization of propylene through Ziegler-Natta catalyzed. The reaction is consist of three steps:
i. Active centre formation –
Usually, a chloride which is in the surface of titanium is alkylated by the co-catalyst which then triggered a titanium carbon (active center). There is a few aluminum species which is in complex series involve in the process in the present of electron donor. Figure 3: Reaction by active center formation (Malpass and Band,
In order to begin this experiment, first one must find the balanced chemical equation for the reaction which occurs between the aluminum and copper (II) chloride. This balanced equation being 2Al(s)+3CuCl2 (aq)3Cu(s)+2AlCl3 (aq). After finding this equation, one must use the process of stoichiometry in order to find how many grams of aluminum are needed in order to produce 0.15 grams of copper. In this experiment, the purpose was to produce between 0.1 and 0.2 grams of copper, so one should attempt to produce 0.15 grams of copper seeing as it is the average of those two numbers. The first step in the stoichiometric process which one has to complete is finding how many grams of copper are in one mole of copper.
We discussed how Jeremy handles product costs . The inventory method uses a straight cost
Marissa De la Paz 29 October 2015 Landstrom T/R, 8am Experiment 13B: Phenyl Grignard Addition to Benzophenone The objective of this experiment is to first generate a Grignard reagent, then use that to synthesize triphenylmethanol. The Grignard reagent is necessary to create a new C—C bond. The formation of triphenylmethanol is broken down in several steps.
Usually, budgeting is based on tangible cost of products purchased but during this project the main costing was based on man hours. Even the cost benefit analysis of the project was based on man hours involved in the current implementation versus what it would be with the new system in place. - Formative and Summative Assessment – Quality Assurance was a new concept that I learned is critical to the successful implementation of the project. I was not entirely satisfied with this part of the project because there is always scope for more quality control measures but the project was limited by time and cost. For example, peer reviews of code could have help bring up the quality of the coding practices of developers but there was no time to implement that in this project.
Being reasonable and taking all parts of representative costs into thought is a piece of how to figure the rate of compensations in your business spending plan. A business by and large
This is 24 year old white female who is here to establish PCP and complaining of sore throat, ear pain, and left armpit lymphnode enlargement. Patient is resident at Lovlady Center. She has history of IV drug use, no history of tobacco use. Patient reports past 3 days, intermitten fever, pain in her throat and right ear. She also reports enlarged lymphnode under her arm.
The two factors that demonstrate that the traditional system may produce estimates that are different than that of the unit cost are high overheads and indirect cost
When an individual is presented with PFPS, Petersen and others in 2013 stated that there are various treatments that are utilized to decrease the pain. The treatments that have been tested and proven to reduce pain in their own degree are the usage of knee braces, taping techniques, icing, foot orthotics, and physical rehabilitation (Petersen, 2013). Before taking extensive precaution on PFPS, initial treatment is suggested which is composed of rest, icing, compression, and elevation of the knee. According to Witvrouw, Werner, Mikkelsen, Van Tigglen, Vanden Berghe, and Cerulli in 2005, when icing, it is recommended to retain the bag on the knee for a time of 10 to 20 minutes. This will allow for any inflammation of the knee to become reduced.
To begin building the houses that he does, he had to have asked himself something along the lines of “How can I use this to build a house?” or “What can I build with this?”. Those are both very big questions. He had to break those down and ask more questions about how he could use all the materials, and where he could use them at
In the 1840s, Friedrich Schönbein accidently discovered that cotton soaked in nitric and sulfuric acid can explode when exposed to heat. This property of “guncotton” results from the fact that the protons on the various alcohol groups of cellulose were converted into NO2 groups, in a process known as nitration. This discovery would inspire the search for similar ways to manufacture explosives. It is extremely fascinating and noteworthy to compare how similar the synthesis of TNT (trinitrotoluene) is to the way Schönbein accidently formed guncotton. If you were to start with toluene as your starting material, you can follow similar steps taken by Schönbein to synthesize TNT.
PALLADIUM-CATALYZED CROSS COUPLING REACTION IN ORGANIC SYNTHESIS The formation of new carbon-carbon bonds is of central importance in organic chemistry and a prerequisite for all life on earth. Through the assembly of carbon atoms into chains, complex molecules, e.g. molecules of life, can be created. The importance of the synthesis of carbon-carbon bonds is reflected by the fact that Nobel Prizes in Chemistry have been given to this area many times: the Grignard reaction (1912), the Diels-Alder reaction (1950), the Wittig reaction (1979), and olefin metathesis to Y. Chauvin, R. H. Grubbs, and R. R. Schrock (2005) and Richard F. Heck , Ei-ichi Negishi, Akira Suzuki (2010) for the development of methods for palladium-catalyzed formation of carbon-carbon
Generally speaking, Friedel-Craft acylation could be useful in a practical application such as industrial chemistry. Using this reaction mechanism can create plastic, synthetic rubber and ethylbenzene, which can eventually lead to polystyrene (Chemical Technology). This reaction can also synthesize high-octane gasoline, commonly referred to as “premium gas.” Therefore, the products generated from Friedel-Crafts acylation are significant because they are used in everyday
Therefore, their anticipated budget will be $120000 million dollars. This in turn will affects the raw materials budget because they need to buy components which is sufficient to manufacture 3 million bikes and obviously a little more to be in safer position. Based on their sales budget, they would be allocating resources and making sure that there is no wastage of resources. In the same way, Sales budget will affect the other budget too. If the level of sales is high, Raw material Requirement will also be high which in turn will require more labor to process and manufacture this product.
Do you think Alice Thornton’s proposal to decentralize the rules and procedures of Cosmo Plastics will work? Alice proposal of decentralizing the rules and procedures in Cosmo Plastics has a bigger chance of working out in a big company with different departments and great number of employees, because then daily operations and decision-making are divided into different authorities in the organization from the top managements, to the middle and lower level managements. Especially when you have this flexibility in work hours, because some departments in the company need constant attention and discipline from the side of employees, decentralizing is needed to divide the controlling process. On another scale, small groups will be formed, employees