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Nonionic detergents are characterized by their uncharged hydrophilic head groups. Typical non-ionic detergents are based on polyoxyethylene or a glycoside. Common examples of the former include Tween, Triton, and the Brij series. These materials are also known as ethoxylates or PEGylates and their metabolites, nonylphenol. Glycosides have a sugar as an uncharged hydrophilic head group. Examples include octylthioglucoside and maltosides. The detergents of the HEGA and MEGA series are similar and have a sugar alcohol as the top group. Bile acids, such as deoxycholic acid (DOC), are anionic cleansers produced by the liver to aid in the digestion and absorption of fats and oils. Soap is known to have been used as a surfactant to wash clothes since the Sumerian period in 2,500 BC. J.-C. [8] In ancient Egypt, soda was used as a washing additive.

Im 19. In the nineteenth century, synthetic surfactants began to emerge, for example from olive oil. [9] Sodium silicate (glass of water) was used to make soap in the United States in the 1860s,[10] and in 1876, Henkel sold a sodium silicate product that could be used with soap and marketed as a „universal detergent“ in Germany. The soda was then mixed with sodium silicate to make the first branded detergent whitening soda in Germany. [11] In 1907, Henkel also added sodium perborate to bleach to launch the first „self-acting“ detergent, Parsley, to eliminate tedious rubbing from hand laundry. [12] The word detergent is derived from the Latin adjective detergent, from the verb detergent, which means to wipe or polish. Detergent is a surfactant or mixture of surfactants with cleaning properties in dilute solutions. [1] Traditionally, however, detergent is used as a synthetic detergent as opposed to soap (a salt of the natural fatty acid), although soap is also a detergent in the strict sense.

[2] In the domestic context, the term detergent refers to household cleaning products such as detergents or dishwashing detergents, which are actually a complex mixture of different compounds, not all of which are detergents themselves. Cationic detergents are similar to anionic detergents, but quaternary ammonium replaces the hydrophilic anionic sulfonate group. The center of ammonium sulfate is positively charged. [7] Cationic surfactants generally contain a poor detergent. I use 1/2 cup of vinegar instead of laundry detergent, and add 1/2 cup of baking soda to the filler. Britannica.com: Encyclopedia article on detergent „detergent“. Merriam-Webster.com Dictionary, Merriam-Webster, www.merriam-webster.com/dictionary/detergent. Retrieved 12 October 2022. Typical anionic detergents are alkylbenzenesulfonates. The alkylbenzene content of these anions is lipophilic and sulfonate hydrophilic. Two varieties have been popularized, those with branched alkyl groups and those with linear alkyl groups. The former have been largely abandoned in economically advanced societies because they are not very biodegradable.

[7] A detergent is a surfactant or mixture of surfactants with purifying properties in dilute solutions. [1] There are a variety of detergents, a common family are alkylbenzene sulfonates, which are soap-like compounds that are more soluble in hard water, as polar sulfonate (from detergents) is less likely than polar carboxylate (from soap) to bind to calcium and other ions in hard water. Detergents are a group of compounds with an amphiphilic structure, with each molecule having a hydrophilic (polar) head and a long hydrophobic (non-polar) tail. The hydrophobic part of these molecules may be straight or branched chain hydrocarbons, or it may have a steroidal structure. The hydrophilic part is more diverse, they can be ionic or nonionic and can range from a simple or relatively complex structure. [4] Detergents are surfactants because they can reduce the surface tension of water. Their dual nature makes it easy to mix hydrophobic compounds (such as oil and grease) with water. Since the air is not hydrophilic, detergents are also foaming agents to varying degrees. Detergent – and beer – bottles are soaked as weights. Examples of everyday detergents are cleaners and fabric softeners, all-purpose cleaners and mixes for soaking (pre-washing), rinsing or bleaching. Detergents can also be biocidal, e.g.

disinfectants, bleach. For more information, see Biocidal detergents. One of the biggest applications of detergents is home and store cleaning, including dishwashing and laundry. These detergents are typically available as powders or concentrated solutions, and formulations of these detergents are often complex mixtures of a variety of chemicals and surfactants, reflecting the diverse application requirements and highly competitive consumer market. These detergents may contain the following components:[21] Amphoteric or zwitterionic detergents have zwitteric ions in a certain pH range and have zero net charge resulting from the presence of the same number of +1 and -1 charged chemical groups. Examples include CHAPS. A detergent is a surfactant or mixture of surfactants that has cleaning properties in solution diluted with water. A detergent is similar to soap, but with a general structure R-SO4-, Na+, where R is a long-chain alkyl group. Like soaps, laundry detergents are amphiphilic, meaning they have both hydrophobic and hydrophilic ranges. Most detergents are akylbenzene fulfonates.

Detergents tend to be more soluble in hard water than soap because the sulfonate in the detergent does not bind calcium and other ions in hard water as easily as the carboxylate in soap. Synthetic detergents were developed in Germany during World War I. An alkyl sulfate surfactant was formulated because the Allied blockade of Germany in 1917 caused a shortage of ingredients for soap production. The word „detergent“ comes from the Latin word „detergent“, which means „to wipe“. Before the invention of detergent, soda ash or sodium was most often used for washing dishes and clothes. In the United States, the first liquid dishwasher detergent was produced in the 1930s, while in Europe, the first detergent for this purpose (Teepol) was produced in 1942. Detergents were used around the same time, although they are available in both solid and liquid form. Dishwashing and laundry detergents contain many other compounds, usually enzymes, bleaches, fragrances, dyes, fillers, and (for laundry detergents) optical brighteners. Additives are necessary because detergents struggle to remove denatured dyes, pigments, resins and proteins.

Test detergents for biology tend to be pure forms of surfactants. Detergents work best in an alkaline pH. The properties of detergents depend on the molecular structure of the monomer. Foaming capacity can be determined by the head group, for example, anionic surfactants are highly foaming, while nonionic surfactants can be non-foaming or weakly foaming. [5] Over the years, many types of detergents have been developed for various purposes, such as low-brew detergents for use in front-loading washing machines, heavy-duty laundry detergents for grease and dirt removal, all-purpose laundry detergents, and specialty laundry detergents. [14] [18] They are used in various non-laundry products, such as dishwashing detergents, shampoos, toothpastes, industrial cleaners, lubricants and fuels, to reduce or prevent the formation of sludge or deposits. [19] Laundry detergents may be formulated with bleach, fragrances, dyes and other additives. However, the use of phosphates in laundry detergents has raised concerns about nutrient pollution and calls for changes in detergent formulation. [20] Concerns have also been raised about the use of surfactants such as branched alkylbenzene sulfonate (tetrapropylebenzenesulfonate), which remains in the environment, resulting in their replacement with more biodegradable surfactants, such as linear alkylbenzene sulfonate. [15] [17] Developments over the years have included the use of enzymes, phosphate substitutes such as zeolite A and NTA, TAED as a bleach activator, sugar-based surfactants that are biodegradable and gentler on the skin, and other environmentally friendly products, as well as dosage form changes such as tablets, gels and pods.

[21] [22] If severe stains are present, you can use a mild detergent and soak the blanket in cold water for 10 to 15 minutes. Reagent-containing cleaning agents are used to isolate and purify integral membrane proteins in biological cells. [24] Solubilization of cell membrane bilayers requires a cleaning agent that can penetrate the inner membrane monolayer. [25] Advances in detergent purity and sophistication have facilitated the structural and biophysical characterization of key membrane proteins such as ion channels and disrupting membrane by binding lipopolysaccharide[26], transporters, signaling receptors, and photosystem II. [27] Detergent molecules aggregate to form micelles, making them water-soluble. The hydrophobic group of the detergent is the main driving force of the formation of micelles, its aggregation forms the hydrophobic core of the micelles. Micellis can remove fat, protein or dirt particles. The concentration at which micelles begin to form is the critical micellar concentration (CMC), and the temperature at which micelles continue to aggregate to separate the solution into two phases is the cloud point when the solution becomes cloudy and cleanability is optimal. [4] However, if you wash your garment with laundry detergent, you should reapply DWR immediately, he advises. The biggest application of detergents is cleaning.

2022-12-08T16:12:50+01:008. Dezember 2022|Allgemein|
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