翻訳と辞書 Words near each other ・ Ammonium fluoride ・ Ammonium fluorosilicate ・ Ammonium formate ・ Ammonium fumarate ・ Ammonium heptamolybdate ・ Ammonium hexachloroiridate ・ Ammonium hexachloroplatinate ・ Ammonium hexafluoroaluminate ・ Ammonium hexafluorophosphate ・ Ammonium hydrosulfide ・ Ammonium hydroxide ・ Ammonium iodide ・ Ammonium iron(II) sulfate ・ Ammonium iron(III) sulfate ・ Ammonium lactate ・ Ammonium lauryl sulfate ・ Ammonium malate ・ Ammonium metavanadate ・ Ammonium molybdate ・ Ammonium nitrate ・ Ammonium nitrate disasters ・ Ammonium nitrite ・ Ammonium nonanoate ・ Ammonium orthomolybdate ・ Ammonium oxalate ・ Ammonium paratungstate ・ Ammonium perchlorate ・ Ammonium perchlorate composite propellant ・ Ammonium perfluorononanoate ・ Ammonium permanganate Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Ammonium lauryl sulfate ： ウィキペディア英語版 Ammonium lauryl sulfate | Section2 = }} Ammonium lauryl sulfate (ALS) is the common name for ammonium dodecyl sulfate (CH3(CH2)10CH2OSO3NH4). The dodecyl signifies the presence of a 12-member carbon chain in the molecular backbone which allows the molecule to bond with non-polar portions of molecules while the highly polar sulfate head allows the molecule to bond with polar molecules such as water. ALS is classified as an alkyl sulfate and is an anionic surfactant found primarily in shampoos and body-wash as a foaming agent. Lauryl sulfates are very high-foam surfactants that disrupt the surface tension of water in part by forming micelles around the highly polar water molecules at the surface-air interface. ==Action in solution== Like many surfactants, ammonium lauryl sulfate makes a good base for cleaners because of the way it disrupts hydrogen bonding in water. (It is hydrogen bonding that is the primary contributor to the high surface tension of water.) In aqueous (water-based) solutions, the lauryl sulfate anions and the ammonium cations dissociate from each other. Above the critical micelle concentration, the anions then align themselves into a micelle, in which they form a sphere with the polar, hydrophilic heads of the sulfate portion on the outside (surface) of the sphere and the nonpolar, hydrophobic tails pointing inwards towards the center. The water molecules around the micelle in turn arrange themselves around the polar heads, which disrupts their ability to hydrogen bond with other nearby water molecules. The overall effect of these micelles is a reduction in surface tension of the solution, which affords a greater ability to penetrate or "wet out" various surfaces, including porous structures like cloth, fibers, and hair. Accordingly, this allows the solution to more readily dissolve soils, greases, etc. in and on such substrates. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ammonium lauryl sulfate」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.