 |
|
Sandia researchers develop unique 'surfactant' material
June 08, 2005LIVERMORE, Calif.-A unique class of materials developed by researchers at Sandia National Laboratories in Livermore, Calif., may prove useful in textile manufacturing, biomedical diagnostics, and other applications requiring the modification of surface properties of liquids or solids.
Sandia's cleavable (easily separated) surface active agent (or, "surfactant"), based on Diels-Alder chemistry, differs from other surfactants in that it can be thermally degraded and easily removed in an inexpensive, environmentally harmless manner.
Scott Vaupen, a business development associate at Sandia, said commercially available thermally cleavable surfactants would enable industrial practices where it is desirable to diminish foaming or surface-active properties over time, in drug delivery, and where biodegradability is a primary concern. "They could prove useful in diverse fields as textile processing, electronics fabrication, sample management, wastewater processing, cleavable phase transfer reagents, and other applications," said Vaupen.
Traditional surfactants are difficult to remove from processes in which they are employed. Some surfactant systems require the invasive addition of an acid or base to separate the surfactant into fragments in order to eliminate surface active properties. Such invasive use of additional reagents usually necessitates costly post-treatment of the system in order to achieve acceptable downstream processing conditions.
Sandia's materials are the first known examples of a surfactant that can be thermally degraded in a benign manner. Five anionic surfactants are available which incorporate hydrophilic and hydrophobic segments that covalently degrade at elevated temperatures. The surfactants behave like classic surface active agents, and form micelles after reaching certain concentrations in water. Upon separation, the surfactants lose all surface-active behavior.
Surfactants, when used in small quantities, reduce surface tension in a fluid or the interfacial tension between two immiscible fluids, such as oil and water. They can be particularly useful in accomplishing the wetting or penetration of solids by aqueous liquids and serve in the manner of detergent, emulsifying, or dispersing agents. They are more effective than soap in certain situations and are used for such purposes as cleaning, wetting, and dispersing.
For information regarding possible collaboration towards commercialization or licensing opportunities, contact Scott Vaupen at (925) 294-2322, sbvaupe@sandia.gov.
DOE/Sandia National Laboratories
Traditional surfactants are difficult to remove from processes in which they are employed. Some surfactant systems require the invasive addition of an acid or base to separate the surfactant into fragments in order to eliminate surface active properties. Such invasive use of additional reagents usually necessitates costly post-treatment of the system in order to achieve acceptable downstream processing conditions.
Sandia's materials are the first known examples of a surfactant that can be thermally degraded in a benign manner. Five anionic surfactants are available which incorporate hydrophilic and hydrophobic segments that covalently degrade at elevated temperatures. The surfactants behave like classic surface active agents, and form micelles after reaching certain concentrations in water. Upon separation, the surfactants lose all surface-active behavior.
Surfactants, when used in small quantities, reduce surface tension in a fluid or the interfacial tension between two immiscible fluids, such as oil and water. They can be particularly useful in accomplishing the wetting or penetration of solids by aqueous liquids and serve in the manner of detergent, emulsifying, or dispersing agents. They are more effective than soap in certain situations and are used for such purposes as cleaning, wetting, and dispersing.
For information regarding possible collaboration towards commercialization or licensing opportunities, contact Scott Vaupen at (925) 294-2322, sbvaupe@sandia.gov.
DOE/Sandia National Laboratories
Surfactants Current Events and Surfactants News RSSBerkeley Researchers Find New Route to Nano Self-Assembly
If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important advance towards this goal has been achieved by researchers with the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) who have found a simple and yet powerfully robust way to induce nanoparticles to assemble themselves into complex arrays.
Growth Spurts: Berkeley Lab Researchers Record First Real-Time Direct Observations of Nanocrystal Growth in Solution
The veil is being lifted from the once unseen world of molecular activity. Not so long ago only the final products were visible and scientists were forced to gauge the processes behind those products by ensemble averages of many molecules.
Pluronic L-81 is a potential anti-diabetic drug?
Pluronic surfactants are synthetic copolymers based on ethylene oxide and propylene oxide.
UCLA researchers develop new method for producing transparent conductors
Researchers at UCLA have developed a new method for producing a hybrid graphene-carbon nanotube, or G-CNT, for potential use as a transparent conductor in solar cells and consumer electronic devices.
Respiratory risk from hospital cleaning fluids
Cleaning fluids used in hospitals may pose a health risk to both staff and patients. A pilot study published in BioMed Central's open access journal Environmental Health has found that potentially hazardous chemicals are contained in a selection of agents used in several different hospitals.
Shades of 1918? New study compares avian flu with a notorious killer from the past
In the waning months of the First World War, a lethal virus known as the Spanish flu (influenza A, subtype H1N1), swept the United States, Europe and Asia in three convulsive waves.
Nanoemulsion potent against superbugs killing cystic fibrosis patients
University of Michigan scientists report highly encouraging evidence that a super-fine oil-and-water emulsion, already shown to kill many other microbes, may be able to quell the ravaging, often drug-resistant infections that cause nearly all cystic fibrosis deaths.
Household chemicals may be linked to infertility
Researchers at the UCLA School of Public Health have found the first evidence that perfluorinated chemicals, or PFCs - chemicals that are widely used in everyday items such as food packaging, pesticides, clothing, upholstery, carpets and personal care products - may be associated with infertility in women.
'2-faced' bioacids put a new face on carbon nanotube self-assembly
Nanotubes, the tiny honeycomb cylinders of carbon atoms only a few nanometers wide, are perhaps the signature material of modern engineering research, but actually trying to organize the atomic scale rods is notoriously like herding cats.
Scientists show gene mutation may cause immature lungs in newborns
Scientists have identified a gene critical to lung maturation in newborns and the production of surfactant, which lines lung tissues and prevents the lungs from collapsing.
More Surfactants Current Events and Surfactants News Articles
 |
Surfactants: A Practical Handbook by K. Robert Lange (Editor) |
 |
Tenside Surfactants Detergents by Carl Hanser Verlag Gmbh & Co |
 |
Applied Surfactants: Principles and Applications by Tharwat F. Tadros (Author) While currently available titles either focus on the basics or on very specific subtopics, this text meets the need for a comprehensive survey of surfactants and their properties, with a strong emphasis on applications and their correlation to the fundamentals. The author covers their classification, physical properties, phase behavior, adsorption, effects - such as wetting, spreading and adhesion - as well as industrial applications in personal care and cosmetics, pharmaceuticals, agrochemicals and food products. Professor Tadros is a well-known expert on the topic of surfactants, with much experience in colloid science. Here, he uses his industrial experience to close the gap between fundamentals of surfactants and their relevance and applications in practice. |
 |
Earth Friendly Products Shower Kleener Made with Tea Tree Oil, 22 Ounces (Pack of 12) by Earth Friendly Products With Tea Tree Oil. Earth Friendly Products® Shower Kleener is pleasantly scented, biodegradable, non-toxic and easy-to-use. It helps eliminate and prevent hard water stains and soap scum. Because natural ingredients are used, color and body may vary. Not tested on animals. No animal ingredients.Thank you for using our products. Made in the USA. |
 |
Wet Betty ORGANIC Surfactant - 1L by Advanced Nutrients For an advanced, completely organic surfactant, choose Wet Betty. This non-ionic product contains only the highest quality ingredients and has been scientifically tested to ensure that you receive the best results possible. By providing comprehensive nutrition and bio-catalytic agents directly to plant roots, Wet Betty boosts plant health, increases water and nutrient absorption, and promotes incredible harvests.* Can increase yields 3-6% all on its own * Prevents growth of many foliar pathogens* Promotes stress resistance and the absorption of water and nutrients* Contains naturally-occurring steroidal and triterpenoid saponins * Requires a low application rateThis slick and superior product is easy to use. First shake well and then simply add 1-2 ml of Wet Betty per litre to your final... |
|
Procter & Gamble Manual Pot and Pan Detergent, Grease Cutting, High Surfactant, 5 Gal Pail, 1/CT by Procter & Gamble Procter & Gamble Manual Pot and Pan Detergent, Grease Cutting, High Surfactant, 5 Gal Pail, 1/CT Pot and pan detergent for hand dishwashing gets dishes virtually spotless and removes stubborn grease. With grease cutting ingredients and long lasting suds that reduces sink changeoverHigh surfactant formula seeks out greasy soil, cuts through it, surrounds the removed soil, and lifts it out of the way. Global Product Type: Cleaners & Detergents-Dishwashing; Cleaner/Detergent Type: Dishwashing; Application: Hand Dishwashing; Applicable Material: Ceramic; Glass; Plastic; Stainless Steel. SKU: PAG02611 - Sold as 1 EA | |
 |
FERTILIZER INJECTABLE 11-22-22 W SURFACTANT BACT by AM LEONARD What is Mycorrhizae? An essential part of your plant's food chain, these naturally occurring organisms help break down nutrients into 51bites51 your plant's roots can absorb. With their uptake greatly enhanced, root growth is accelerated, and trees and plants grow stronger and handle stress better. Planting mixes and disturbed landscapes often have very little or no beneficial mycorrhizae fungi.PHC for Trees Injectable and Drench - Provide your trees with both short-term and long-term nutrients. Water soluble formula with N-P-K fertilizers to boost soil fertility. Adds mycorrhizae and beneficial bacteria, plus an organic nutrient complex. Use a soil injector to put it right at the roots, or mix with water and pour over root zone as a drench. See application rates on package, generally, 8... |
|
Manual Pot and Pan Detergent, Grease Cutting, High Surfactant, 5 Gal Pail, 1/CT by PROCTER & GAMBLE Pot and pan detergent for hand dishwashing gets dishes virtually spotless and removes stubborn grease. With grease cutting ingredients and long lasting suds that reduces sink changeoverHigh surfactant formula seeks out greasy soil, cuts through it, surrounds the removed soil, and lifts it out of the way. Cleaner/Detergent Type: Dishwashing; Global Product Type: N/A; Application: Hand Dishwashing; Applicable Material: Ceramic; Glass; Plastic; Stainless Steel. | |
 |
NS128 Non-Ionic Surfactant, One Gallon by A.M. Leonard |
![Diminishing Returns [Explicit]](http://ecx.images-amazon.com/images/I/41KF3BBYcoL._SL160_.jpg) |
Diminishing Returns [Explicit] The Surfactants (Primary Contributor) |
| © 2009 BrightSurf.com |