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Polymers Formation of formaldehyde copolymers, nylon rope, high and low density polyethylene, combustion of polyethylene and polystyrene, Beilstein test, formation of solid latex, cleaning oil spills, slime, solid foams, super absorbent polymer, formation of polyurethane foam under normal and micro gravity, and construction of a rod climbing apparatus are demonstrated.
Solutions : GeneralSurfactants (20 Variations)
You can make homemade soap by combining a fat (tallow, lard, vegetable oil, etc.) with a source of alkali (lye). What is the purpose of the fat in soap?
Biochemistry : LipidRole (10 Variations) Which aspect of the structure of a phospholipid is most directly responsible for its role as a source of some vitamins?
A Lab Experience To Illustrate the Physicochemical Principles of DetergencyJ. A. Poce-Fatou, M. Bethencourt-Núñez, C. Moreno, F. J. Moreno-Dorado, and J. J. Pinto-Ganfornina This article presents a lab to study the role of a surfactant and builder in laundry detergent efficiency as determined through measurements of the diffuse reflectances of polyester samples impregnated with linseed oil. Poce-Fatou, J. A.; Bethencourt-Núñez, M.; Moreno, C.; Moreno-Dorado, F. J.; Pinto-Ganfornina, J. J. J. Chem. Educ.2008, 85, 266.
Aqueous Solution Chemistry |
Consumer Chemistry |
Laboratory Equipment / Apparatus |
Micelles |
Surface Science |
Thermodynamics
Analysis of the Thickening Agents in Automotive Greases by GC–MSDavid Mayotte, Craig J. Donahue, and Cheryl A. Snyder Describes a laboratory procedure for the identification of the thickening agents in lubricating greases by GCMS. Mayotte, David; Donahue, Craig J.; Snyder, Cheryl A. J. Chem. Educ.2006, 83, 902.
Applications of Chemistry |
Consumer Chemistry |
Gas Chromatography |
Industrial Chemistry |
Mass Spectrometry |
Separation Science |
Fatty Acids
Making Usable, Quality Opaque or Transparent SoapSuzanne T. Mabrouk First-year and organic chemistry students will learn the chemistry of soap by making some of the eleven described formulations, which produce usable, quality bars of soap. Opaque and transparent soaps are made in two and three hours, respectively. With an introduction to formulation chemistry, organic chemistry students can devise a formulation to synthesize their own opaque soap. Many of the formulations use commonly-available fats and oils, while some formulations incorporate specialty fats and oils for therapeutic purposes, for example, to relieve dry skin or itching. Mabrouk, Suzanne T. J. Chem. Educ.2005, 82, 1534.
