THEORETICAL STUDY ON MICROWAVE ASSISTED BONDING OF POLYMER BASED MICROFLUIDIC DEVICES By KASI BALAMURUGAN MANI A thesis submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN MECHANICAL ENGINEERING WASHINGTON STATE UNIVERSITY School of Mechanical and Materials Engineering May 2013 To the Faculty of Washington State University: The members of the Committee appointed to examine the thesis of KASI BALAMURUGAN MANI‚ find it satisfactory and recommend that it
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at different temperatures. It is also the process in which the solid to be crystallized is dissolved to either a hot solvent or a hot solvent mixture and is cooled in a solution.In this experiment‚ acetanilide‚ the crude product of acetylation of aniline and acetic anhydride‚ was used as the pure organic compound. Crude acetanilide underwent crystallization process using the preferred recrystallizing solvent‚ water. The crystallization process was when crude acetanilide was placed in hot water bath
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Recrystallization Abstract: Technical grade aniline was reacted with acetic anhydride to give acetanilide a dark brown color‚ due to the presence of impurities. Crystallization of the crude product from water was combined with decolorization with activated carbon‚ furnished pure acetanilide as white flakes‚ melting point 112-115°C‚ yield 70.3%. Experimental: 2 grams of technical grade aniline and 15ml water were placed in a 125ml Erlenmeyer flask. Then‚ 2.5ml of acetic anhydride was
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To get to aniline‚ tin metal acts as a reducing agent and is oxidized to SnCl4. The purification of crude aniline is done by distillation and extraction. Aniline can be converted to acetanilide by acetylation reaction using acetic anhydride with sodium acetate. This step protects the amine functional group from doing unwanted reactions
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Desquitado‚ John Carlos M. Drapesa‚ Arianne Valerie B. Escritor‚ Elisha Ellis R. Esteva Group 4 2B Medical Technology Organic Chemistry Laboratory ABSTRACT In this experiment‚ acetanilide was used as the pure organic compound. Acetylation of aniline and acetic anhydride yields the crude product or crude acetanilide. The crude acetanilide was purified by dissolving it in hot water and then the solution was cooled slowly by placing in an ice bath. The yielded crystals were pure acetanilide since
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members were asked to prepare the water bath‚ ice bath and a fluted filter paper while others were tasked to weigh the filter papers in advance so that the experiment will flow smoothly. The formation of crude acetanilide was due to the acetylation of aniline and acetic anhydride. The recrystallizing solvent dissolved the acetic acetanilide and was heated in a water bath. Crystals started to form after cooling the solutions in an ice bath. Pure acetanilide was the product after the second crystrallization
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Recrystallization is a technique used to purify organic solids. This method involves dissolving of a solute in a solvent and inciting the solute to produce a precipitate from a solution. In this experiment‚ acetic anhydride was added to the mixture of 2mL aniline and 20mL of distilled water. The mixture was cooled in an ice bath and filtered through filter paper resulting to the crude acetanilide. The pure acetanilide was then produced by the filtered solution of crude acetanilide and recrystallizing solvent
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distillation ______6. It is a preparation of soap‚ tragacanth‚ and glycerin to soften the skin f. chemotherapy ______7 . Compounds which fasten dyes g. lanolin ______8. Wool grease from sheep h. mordants ______9. Study of fighting diseases-causing germs using chemicals which attack only the germs i. sulfa drugs ______10. A perspiration deodorant which consist of talcum‚ cornstarch and salicylic acid j. aniline k. lipstick II
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Recrystallization is the primary method for purifying solid organic compounds through the differences in solubility at different temperatures. In this experiment‚ a suitable solvent was first determined. Acetanilide was produced by acetylation of aniline with acetic anhydride. The crude acetanilide was dissolved in a solvent in a heating water bath. The hot solution was filtered and the filtrate‚ cooled slowly in an ice bath as crystals started forming out. As the compound crystallizes from the solution
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Sulfa Drugs: Preparation of Sulfanilamide Introduction The purpose of this experiment is to prepare sulfanilamide from p-Acetamidobenzenesulfonyl chloride. This will be done using reflux‚ vacuum filtration‚ and melting point determination. Experiment Scheme6 Figure 1. Reaction equation.6 A hot water bath was prepared in a fume hood using a 250-mL beaker. 2.5 g of p-acetamidobenzenesulfonyl chloride was placed into a 50 mL Erlenmeyer flask and 11 mL of dilute ammonium hydroxide solution
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