By Drew Myers
A basic advent to surfactants, floor job, and surfactant functions vital advances within the instruments on hand for learning the job of surfactants has considerably elevated clinical realizing of interfaces on the molecular point. even if, there's nonetheless a lot to be discovered. during this 3rd variation of the profitable vintage, writer and specialist Drew Myers combines the most recent details on hand within the box of surfactants along with his unique, available textual content at the topic. Now absolutely up to date to mirror fresh advancements in operating with surfactants in either version and useful structures, the 3rd version of Surfactant technological know-how and expertise presents a pretty good creation to the sector of surfactant technology. Written particularly for rookies and nonspecialists who would favor a realistic yet no longer unavoidably complete wisdom of the sphere, this transparent, cogent textual content conveys the main primary and important strategies of surfactant motion and alertness. New chapters convey readers brand new on present organic and scientific functions of surfactants, in addition to functions in foodstuff technology, cosmetics, and different components. as well as new chapters, Surfactant technological know-how and know-how comprises illustrative difficulties on the finish of every bankruptcy. those difficulties clarify options mentioned and stimulate inventive suggestions at the a part of the reader. A priceless bibliography of supplementary assets for readers who hope extra element has additionally been incorporated. Surfactant technology and know-how, 3rd version is a useful source for floor and polymer chemists, chemical and commercial engineers, and quite a lot of chemistry scholars.
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Surfactants that can be either cationic or anionic depending on the pH or other solution conditions, including those that are zwitterionic—possessing permanent charges of each type. Anionic surfactants. Surfactants that carry a negative charge on the surface-active portion of the molecule. Bicontinuous phases. Surfactant aggregate structures related to liquid crystalline phases or mesophases that exhibit bicontinuous (two interwoven continuous phases) behavior. The most common is the cubic bicontinuous structure, often referred to today as ‘‘cubosome,’’ although other structures are possible.
Lipophilic (‘‘fat-loving’’). A general term used to describe materials that have a high afﬁnity for fatty or organic solvents; essentially the opposite of hydrophilic. Lipophobic (‘‘fat-hating’’). The opposite of lipophilic; that is, materials preferring to be in more polar or aqueous media; the major exceptions are the ﬂuorocarbon materials, which may be both lipophobic and hydrophobic. London forces. Forces arising from the mutual perturbation of the electron clouds of neighboring atoms or molecules; generally weak (%8 kJ/mol), decreasing approximately as the inverse sixth power of the distance between the interacting units.
In this context, the carboxylic acid group, while seldom considered as such in acid–base theory, is classiﬁed as a strong acid. ) but have an additive effect so that increasing their number in a molecule increases the magnitude of their solubilizing effect. 1. ). The list is in no way complete, but the great majority of surfactants available commercially fall into one of those classes. It is possible, and sometimes even advantageous, to combine two or more of the functionalities described above to produce materials with properties superior to those of a monofunctional material.
Surfactant Science and Technology by Drew Myers