The Experts below are selected from a list of 14976 Experts worldwide ranked by ideXlab platform
Blake R. Peterson - One of the best experts on this subject based on the ideXlab platform.
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Silver Bromide Nanoparticle/Polymer Composites: Dual Action Tunable Antimicrobial Materials
Journal of the American Chemical Society, 2006Co-Authors: Varun Sambhy, Blake R. Peterson, Megan M Macbride, Ayusman SenAbstract:We present a simple method of fabricating highly potent dual action antibacterial composites consisting of a cationic polymer matrix and embedded Silver bromide nanoparticles. A simple and novel technique of on-site precipitation of AgBr was used to synthesize the polymer/nanoparticle composites. The synthesized composites have potent antibacterial activity toward both gram-positive and gram-negative bacteria. The materials form good coatings on surfaces and kill both airborne and waterborne bacteria. Surfaces coated with these composites resist biofilm formation. These composites are different from other Silver-containing antibacterial materials both in the ease of synthesis and in the use of a Silver salt nanoparticle instead of elemental Silver or complex Silver Compounds. We also demonstrate the ability to tune the release of biocidal Ag+ ions from these composites by controlling the size of the embedded AgBr nanoparticles. These composites are potentially useful as antimicrobial coatings in a wide va...
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Silver bromide nanoparticle polymer composites dual action tunable antimicrobial materials
Journal of the American Chemical Society, 2006Co-Authors: Varun Sambhy, Megan M Macbride, Blake R. PetersonAbstract:We present a simple method of fabricating highly potent dual action antibacterial composites consisting of a cationic polymer matrix and embedded Silver bromide nanoparticles. A simple and novel technique of on-site precipitation of AgBr was used to synthesize the polymer/nanoparticle composites. The synthesized composites have potent antibacterial activity toward both gram-positive and gram-negative bacteria. The materials form good coatings on surfaces and kill both airborne and waterborne bacteria. Surfaces coated with these composites resist biofilm formation. These composites are different from other Silver-containing antibacterial materials both in the ease of synthesis and in the use of a Silver salt nanoparticle instead of elemental Silver or complex Silver Compounds. We also demonstrate the ability to tune the release of biocidal Ag+ ions from these composites by controlling the size of the embedded AgBr nanoparticles. These composites are potentially useful as antimicrobial coatings in a wide va...
Kyle J. Hazelwood - One of the best experts on this subject based on the ideXlab platform.
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Exposure-related health effects of Silver and Silver Compounds: A review
Annals of Occupational Hygiene, 2005Co-Authors: P. L. Drake, Kyle J. HazelwoodAbstract:A critical review of studies examining exposures to the various forms of Silver was conducted to determine if some Silver species are more toxic than others. The impetus behind conducting this review is that several occupational exposure limits and guidelines exist for Silver, but the values for each depend on the form of Silver as well as the individual agency making the recommendations. For instance, the American Conference of Governmental Industrial Hygienists has established separate threshold limit values for metallic Silver (0.1 mg/m3) and soluble Compounds of Silver (0.01 mg/m3). On the other hand, the permissible exposure limit (PEL) recommended by the Occupational Safety and Health Administration and the Mine Safety and Health Administration and the recommended exposure limit set by the National Institute for Occupational Safety and Health is 0.01 mg/m3 for all forms of Silver. The adverse effects of chronic exposure to Silver are a permanent bluish-gray discoloration of the skin (argyria) or eyes (argyrosis). Most studies discuss cases of argyria and argyrosis that have resulted primarily from exposure to the soluble forms of Silver. Besides argyria and argyrosis, exposure to soluble Silver Compounds may produce other toxic effects, including liver and kidney damage, irritation of the eyes, skin, respiratory, and intestinal tract, and changes in blood cells. Metallic Silver appears to pose minimal risk to health. The current occupational exposure limits do not reflect the apparent difference in toxicities between soluble and metallic Silver; thus, many researchers have recommended that separate PELs be established.
Varun Sambhy - One of the best experts on this subject based on the ideXlab platform.
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Silver Bromide Nanoparticle/Polymer Composites: Dual Action Tunable Antimicrobial Materials
Journal of the American Chemical Society, 2006Co-Authors: Varun Sambhy, Blake R. Peterson, Megan M Macbride, Ayusman SenAbstract:We present a simple method of fabricating highly potent dual action antibacterial composites consisting of a cationic polymer matrix and embedded Silver bromide nanoparticles. A simple and novel technique of on-site precipitation of AgBr was used to synthesize the polymer/nanoparticle composites. The synthesized composites have potent antibacterial activity toward both gram-positive and gram-negative bacteria. The materials form good coatings on surfaces and kill both airborne and waterborne bacteria. Surfaces coated with these composites resist biofilm formation. These composites are different from other Silver-containing antibacterial materials both in the ease of synthesis and in the use of a Silver salt nanoparticle instead of elemental Silver or complex Silver Compounds. We also demonstrate the ability to tune the release of biocidal Ag+ ions from these composites by controlling the size of the embedded AgBr nanoparticles. These composites are potentially useful as antimicrobial coatings in a wide va...
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Silver bromide nanoparticle polymer composites dual action tunable antimicrobial materials
Journal of the American Chemical Society, 2006Co-Authors: Varun Sambhy, Megan M Macbride, Blake R. PetersonAbstract:We present a simple method of fabricating highly potent dual action antibacterial composites consisting of a cationic polymer matrix and embedded Silver bromide nanoparticles. A simple and novel technique of on-site precipitation of AgBr was used to synthesize the polymer/nanoparticle composites. The synthesized composites have potent antibacterial activity toward both gram-positive and gram-negative bacteria. The materials form good coatings on surfaces and kill both airborne and waterborne bacteria. Surfaces coated with these composites resist biofilm formation. These composites are different from other Silver-containing antibacterial materials both in the ease of synthesis and in the use of a Silver salt nanoparticle instead of elemental Silver or complex Silver Compounds. We also demonstrate the ability to tune the release of biocidal Ag+ ions from these composites by controlling the size of the embedded AgBr nanoparticles. These composites are potentially useful as antimicrobial coatings in a wide va...
Gregg Silver - One of the best experts on this subject based on the ideXlab platform.
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Silver as biocides in burn and wound dressings and bacterial resistance to Silver Compounds
Journal of Industrial Microbiology and Biotechnology, 2006Co-Authors: Simon Silver, L T Phung, Gregg SilverAbstract:Silver products have been used for thousands of years for their beneficial effects, often for hygiene and in more recent years as antimicrobials on wounds from burns, trauma, and diabetic ulcers. Silver sulfadiazine creams (Silvazine and Flamazine) are topical ointments that are marketed globally. In recent years, a range of wound dressings with slow-release Ag Compounds have been introduced, including Acticoat, Actisorb Silver, Silverlon, and others. While these are generally accepted as useful for control of bacterial infections (and also against fungi and viruses), key issues remain, including importantly the relative efficacy of different Silver products for wound and burn uses and the existence of microbes that are resistant to Ag+. These are beneficial products needing further study, although each has drawbacks. The genes (and proteins) involved in bacterial resistance to Ag have been defined and studied in recent years.
P. L. Drake - One of the best experts on this subject based on the ideXlab platform.
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Exposure-related health effects of Silver and Silver Compounds: A review
Annals of Occupational Hygiene, 2005Co-Authors: P. L. Drake, Kyle J. HazelwoodAbstract:A critical review of studies examining exposures to the various forms of Silver was conducted to determine if some Silver species are more toxic than others. The impetus behind conducting this review is that several occupational exposure limits and guidelines exist for Silver, but the values for each depend on the form of Silver as well as the individual agency making the recommendations. For instance, the American Conference of Governmental Industrial Hygienists has established separate threshold limit values for metallic Silver (0.1 mg/m3) and soluble Compounds of Silver (0.01 mg/m3). On the other hand, the permissible exposure limit (PEL) recommended by the Occupational Safety and Health Administration and the Mine Safety and Health Administration and the recommended exposure limit set by the National Institute for Occupational Safety and Health is 0.01 mg/m3 for all forms of Silver. The adverse effects of chronic exposure to Silver are a permanent bluish-gray discoloration of the skin (argyria) or eyes (argyrosis). Most studies discuss cases of argyria and argyrosis that have resulted primarily from exposure to the soluble forms of Silver. Besides argyria and argyrosis, exposure to soluble Silver Compounds may produce other toxic effects, including liver and kidney damage, irritation of the eyes, skin, respiratory, and intestinal tract, and changes in blood cells. Metallic Silver appears to pose minimal risk to health. The current occupational exposure limits do not reflect the apparent difference in toxicities between soluble and metallic Silver; thus, many researchers have recommended that separate PELs be established.