By Bengt Kronberg, Visit Amazon's Krister Holmberg Page, search results, Learn about Author Central, Krister Holmberg, , Bjorn Lindman
This booklet offers the reader an creation to the sector of surfactants in resolution in addition to polymers in answer. beginning with an advent to surfactants the e-book then discusses their environmental and wellbeing and fitness facets. bankruptcy three seems at basic forces in floor and colloid chemistry. bankruptcy four covers self-assembly and five section diagrams. bankruptcy 6 experiences complicated self-assembly whereas bankruptcy 7 appears to be like at advanced behaviour. Chapters eight to ten disguise polymer adsorption at sturdy surfaces, polymers in answer and floor lively polymers, respectively. Chapters eleven and 12 speak about adsorption and floor and interfacial stress, whereas Chapters thirteen- sixteen care for combined surfactant platforms. bankruptcy 17, 18 and 19 handle microemulsions, colloidal balance and the rheology of polymer and surfactant options. Wetting and wetting brokers, hydrophobization and hydrophobizing brokers, strong dispersions, surfactant assemblies, foaming, emulsions and emulsifiers and microemulsions for soil and oil elimination whole the assurance in chapters 20-25.
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Extra info for Surface Chemistry of Surfactants and Polymers
This autocatalytic degradation of a surfactant such as SDS is well known among those who formulate surfactant-containing products and has often been regarded as a substantial disadvantage with this specific surfactant. The general attitude used to be that weak bonds in a surfactant may cause handling and storage problems and should, therefore, be avoided. For a couple of decades, environmental concern has been one of the main driving forces for the development of new surfactants and their rate of biodegradation is a major issue.
The best surfactants often have very low cloud points. The role of the hydrotrope in such formulations is to bring the cloud point to above working temperature. Cumene sulfonate and similar compounds are efficient in doing so but hydrophilic surfactants, such as shortchain alkyl phosphates and hydrophilic alkyl glucosides, are often even more efficient. The hydrophilic surfactant in such a formulation is usually termed a cosurfactant but it clearly acts as a hydrotrope. 4, the cosurfactant needs to be fine-tuned for the specific application.
Polyol-based nonionics exhibit the normal temperature dependence, that is, their solubility in water increases with temperature. 8 Base catalyzed ethoxylation of a fatty alcohol, R–OH Hence, a considerable amount of unethoxylated alcohol will remain in the reaction ixture, also with relatively long ethoxylates. This is sometimes a problem and consideram ble efforts have been made to obtain a narrower homologue distribution. The distribution can be affected by the choice of ethoxylation catalyst and it has been found that alkaline earth hydroxides, such as Ba(OH)2 and Sr(OH)2, give a much narrower distribution than KOH, probably due to some coordination mechanism.
Surface Chemistry of Surfactants and Polymers by Bengt Kronberg, Visit Amazon's Krister Holmberg Page, search results, Learn about Author Central, Krister Holmberg, , Bjorn Lindman