Nanocomposites have increased surface area due to nanoparticles, which are much smaller than microparticles. This small size leads to a high surface-to-volume ratio and small distances between fillers, resulting in bulk interfacial material. Nanocomposites demonstrate improved mechanical and optical properties compared to macroscale composites. They are also multiscale systems as nanoparticles can cluster at the micron scale while polymer chains are immobilized at the nanoscale particle surface. Research also shows that adding nanoparticles like carbon nanotubes and clay to polymer thin films increases the effective fraction of slowly relaxing domains, raising the glass transition temperature over films without nanoparticles.
The document discusses adsorption and the Gibbs adsorption equation. It defines adsorption as molecules of a gas or liquid being attracted to and retained on the surface of a solid. Absorption occurs when a substance is uniformly distributed throughout a solid or liquid. The Gibbs adsorption equation relates changes in surface tension to changes in solute concentration at an interface. It shows that the surface excess concentration of a solute is proportional to the negative of the derivative of surface tension with respect to solute activity. The document also lists factors that affect adsorption and describes adsorption isotherms.
This document discusses X-ray diffraction (XRD) spectroscopy and provides examples of applying XRD principles to characterize different materials. It describes the basic principles of how XRD works using Bragg's law and Miller indices to identify crystal planes. Examples are given for characterizing silver nanoparticles, graphite, graphene oxide, and zinc oxide nanoparticles using XRD, including estimating particle sizes from XRD peak widths and identifying functional groups from infrared spectroscopy. References are also provided for further reading.
ZnO nanoparticles were synthesized using various methods and characterized. Their toxicity was then evaluated using two photosynthetic microorganisms, Anabaena flos-aquae and Euglena gracilis. The results showed that nanoparticle size, protective coatings, and hydrolysis ratio affected toxicity. ZnO-TOPO nanoparticles caused cell death in both organisms, while ZnO and ZnO-Brij-76 decreased photosynthetic activity initially but activity increased after 10 days for Anabaena flos-aquae. TEM images showed nanoparticle interactions with cell structures. The study provides insights into how nanoparticle properties influence ecotoxicity.
This document discusses nanotechnology and nanoparticles in pharmacy. It begins by defining nanotechnology as manipulating matter at the atomic scale between 1-1000 nm. In pharmacy, nanoparticles are used to synthesize, characterize, and screen particles at the nano range. The document then discusses various methods of nanoparticle preparation including emulsion polymerization, dispersion polymerization, and interfacial polymerization. It covers advantages and applications of nanoparticles in targeted drug delivery and concludes by discussing pharmaceutical aspects such as purification, freeze drying, and sterilization of nanoparticles.
Surface area and porosimetry analyzer finished installation at universiti tun...Gold APP Instruments Corp.
An engineer from Gold APP Instruments Corporation installed a V-Sorb 4800P high throughput surface area and porosimetry analyzer at Universiti Tun Hussein Onn Malaysia with the help of Mr. Melvin from Crest NanoSolutions. The engineer completed the installation and calibration of the analyzer and separate degasser. They ensured the analyzer was working properly by testing reference materials and providing an introduction and training to UTHM. UTHM expressed satisfaction with the installation and analyzer.
Gold APP Instruments Corporation China is a manufacturer of laboratory analytical instruments located in Beijing, China. They produce instruments for measuring properties of particles, powders, and fibers including BET surface area analyzers, gas pycnometers for measuring true density, and high pressure/temperature gas adsorption analyzers. The document then discusses common static and dynamic methods for determining gas adsorption isotherms, which are key to characterizing materials using BET surface area analysis and other techniques. These include volumetric and gravimetric methods as well as continuous flow techniques.
Nanocomposites have increased surface area due to nanoparticles, which are much smaller than microparticles. This small size leads to a high surface-to-volume ratio and small distances between fillers, resulting in bulk interfacial material. Nanocomposites demonstrate improved mechanical and optical properties compared to macroscale composites. They are also multiscale systems as nanoparticles can cluster at the micron scale while polymer chains are immobilized at the nanoscale particle surface. Research also shows that adding nanoparticles like carbon nanotubes and clay to polymer thin films increases the effective fraction of slowly relaxing domains, raising the glass transition temperature over films without nanoparticles.
The document discusses adsorption and the Gibbs adsorption equation. It defines adsorption as molecules of a gas or liquid being attracted to and retained on the surface of a solid. Absorption occurs when a substance is uniformly distributed throughout a solid or liquid. The Gibbs adsorption equation relates changes in surface tension to changes in solute concentration at an interface. It shows that the surface excess concentration of a solute is proportional to the negative of the derivative of surface tension with respect to solute activity. The document also lists factors that affect adsorption and describes adsorption isotherms.
This document discusses X-ray diffraction (XRD) spectroscopy and provides examples of applying XRD principles to characterize different materials. It describes the basic principles of how XRD works using Bragg's law and Miller indices to identify crystal planes. Examples are given for characterizing silver nanoparticles, graphite, graphene oxide, and zinc oxide nanoparticles using XRD, including estimating particle sizes from XRD peak widths and identifying functional groups from infrared spectroscopy. References are also provided for further reading.
ZnO nanoparticles were synthesized using various methods and characterized. Their toxicity was then evaluated using two photosynthetic microorganisms, Anabaena flos-aquae and Euglena gracilis. The results showed that nanoparticle size, protective coatings, and hydrolysis ratio affected toxicity. ZnO-TOPO nanoparticles caused cell death in both organisms, while ZnO and ZnO-Brij-76 decreased photosynthetic activity initially but activity increased after 10 days for Anabaena flos-aquae. TEM images showed nanoparticle interactions with cell structures. The study provides insights into how nanoparticle properties influence ecotoxicity.
This document discusses nanotechnology and nanoparticles in pharmacy. It begins by defining nanotechnology as manipulating matter at the atomic scale between 1-1000 nm. In pharmacy, nanoparticles are used to synthesize, characterize, and screen particles at the nano range. The document then discusses various methods of nanoparticle preparation including emulsion polymerization, dispersion polymerization, and interfacial polymerization. It covers advantages and applications of nanoparticles in targeted drug delivery and concludes by discussing pharmaceutical aspects such as purification, freeze drying, and sterilization of nanoparticles.
Surface area and porosimetry analyzer finished installation at universiti tun...Gold APP Instruments Corp.
An engineer from Gold APP Instruments Corporation installed a V-Sorb 4800P high throughput surface area and porosimetry analyzer at Universiti Tun Hussein Onn Malaysia with the help of Mr. Melvin from Crest NanoSolutions. The engineer completed the installation and calibration of the analyzer and separate degasser. They ensured the analyzer was working properly by testing reference materials and providing an introduction and training to UTHM. UTHM expressed satisfaction with the installation and analyzer.
Gold APP Instruments Corporation China is a manufacturer of laboratory analytical instruments located in Beijing, China. They produce instruments for measuring properties of particles, powders, and fibers including BET surface area analyzers, gas pycnometers for measuring true density, and high pressure/temperature gas adsorption analyzers. The document then discusses common static and dynamic methods for determining gas adsorption isotherms, which are key to characterizing materials using BET surface area analysis and other techniques. These include volumetric and gravimetric methods as well as continuous flow techniques.
Gold APP Instruments Corporation China is located in Beijing, China and is a manufacturer of laboratory analytical instruments. They produce instruments such as BET surface area analyzers, gas pycnometers, and high pressure gas adsorption analyzers. These instruments are used to analyze properties of particles, powders, and fibers, including surface area, pore size, pore volume, and pore size distribution. The document also provides background information on isosteric heat of adsorption, which is a measurement of the heat released during adsorption important for understanding adsorption kinetics.
Gold APP Instruments Corporation China is located in Beijing and specializes in manufacturing laboratory analytical instruments for measuring properties of particles, powders, and fibers. They produce BET surface area analyzers, gas pycnometers, and high pressure gas adsorption analyzers. The document discusses adsorption equilibrium, which is reached when an adsorbent and adsorbate contact each other. It defines adsorption isotherms, isobars, and isosteres which relate the equilibrium uptake of an adsorbate to temperature and pressure changes. Adsorption isotherms are important for designing adsorption processes and determining required adsorbent amounts.
Gold APP Instruments Corporation China is located in Beijing, China and is a manufacturer of laboratory instruments for measuring properties of particles, powders, and fibers. The document provides details on outgassing procedures that should be followed when using adsorption instruments to obtain reproducible isotherm measurements and determine surface area and porosity. It recommends outgassing samples at the maximum temperature that does not alter the material, to a residual pressure of 10 mPa, and monitoring the outgassing process to ensure complete removal of physisorbed species from the surface. Care must be taken to avoid conditions that could decompose or irreversibly change the material.
Gold APP Instruments Corporation China is located in Beijing and manufactures laboratory instruments for measuring properties of particle, porous, powder, and fiber materials. The document provides details on outgassing procedures that should be followed when determining adsorption isotherms to ensure reproducible results. It explains that all physisorbed species must be removed from the surface of an adsorbent through outgassing, usually by exposure to high vacuum at elevated temperature. Factors like temperature, pressure change over the adsorbent, and residual pressure must be carefully controlled depending on the adsorption system.
Gold APP Instruments Corporation China is a professional researcher and manufacturer of laboratory and analytical instruments located in Beijing, China. Their instruments include BET surface area analyzers, surface area and pore size analyzers, gas pycnometers, and high pressure gas adsorption analyzers. They use these instruments to analyze properties of porous materials such as surface area, pore size, pore volume, and pore size distribution through methods like BET surface area, Langmuir surface area, t-plot, BJH pore size, and others.
Gold APP Instruments Corporation China is located in Beijing, China and provides instruments for measuring properties of particle, porous, powder and fiber materials. Their contact information and website are listed. The document then discusses some of the complexities and uncertainties involved in using physisorption methods to compute mesopore size distributions from isotherms, noting assumptions made about pore geometry and the effects of multilayer adsorption. It acknowledges that pore size distribution curves may not always accurately depict real pore structures due to these factors. Finally, it introduces Gold APP Instruments as a manufacturer of laboratory instruments for measuring surface area, pore size, and other material properties using various gas adsorption methods.
Gold APP Instruments Corporation China is a professional researcher and manufacturer of laboratory and analytical instruments located in Beijing, China. They specialize in instruments for measuring surface area, pore size, and density of particle, porous, powder, and fiber materials. These instruments include BET surface area analyzers, surface area and pore size analyzers, gas pycnometers for true density analysis, and high pressure/temperature gas adsorption analyzers. Gold APP also provides sample preparation degassing equipment.
Gold APP Instruments Corporation China is a professional researcher and manufacturer of laboratory and analytical instruments located in Beijing, China. They specialize in instruments for measuring surface area, pore size, and density of particle, porous, powder, and fiber materials. These instruments include BET surface area analyzers, surface area and pore size analyzers, gas pycnometers for true density analysis, and high pressure/temperature gas adsorption analyzers. Gold APP also provides sample preparation degassing equipment.
Gold APP Instruments is a Beijing-based company that develops, produces, and sells scientific instruments for surface area and pore size analysis. It has a reputation for high-quality products and excellent customer service. In 2013, Iowa State University visited Gold APP Instruments' headquarters and laboratories, and spoke positively about the company's software, hardware, and technical achievements. Iowa State University expressed interest in strengthening its technical cooperation with Gold APP Instruments.
Gold app instruments china successfully supplied surface area and porosity an...Gold APP Instruments Corp.
Gold APP Instruments is a Chinese company located in Beijing that develops and manufactures gas sorption analyzers. It supplies surface area and porosity analyzers for materials characterization across various industries. In 2014, Gold APP Instruments successfully supplied its V-Sorb 2800P analyzer to the National Research Institute for Chemical Technology in Nigeria, expanding its presence in the African market. The V-Sorb 2800P uses static volumetric adsorption to measure surface area and pore size parameters of nanomaterials.
Gold APP Instruments Corporation China is located in Beijing, China and is a manufacturer of laboratory analytical instruments. They produce instruments such as BET surface area analyzers, gas pycnometers, and high pressure gas adsorption analyzers. These instruments are used to analyze properties of particles, powders, and fibers, including surface area, pore size, pore volume, and pore size distribution. The document also provides background information on isosteric heat of adsorption, which is a measurement of the heat released during adsorption important for understanding adsorption kinetics.
Gold APP Instruments Corporation China is located in Beijing and specializes in manufacturing laboratory analytical instruments for measuring properties of particles, powders, and fibers. They produce BET surface area analyzers, gas pycnometers, and high pressure gas adsorption analyzers. The document discusses adsorption equilibrium, which is reached when an adsorbent and adsorbate contact each other. It defines adsorption isotherms, isobars, and isosteres which relate the equilibrium uptake of an adsorbate to temperature and pressure changes. Adsorption isotherms are important for designing adsorption processes and determining required adsorbent amounts.
Gold APP Instruments Corporation China is located in Beijing, China and is a manufacturer of laboratory instruments for measuring properties of particles, powders, and fibers. The document provides details on outgassing procedures that should be followed when using adsorption instruments to obtain reproducible isotherm measurements and determine surface area and porosity. It recommends outgassing samples at the maximum temperature that does not alter the material, to a residual pressure of 10 mPa, and monitoring the outgassing process to ensure complete removal of physisorbed species from the surface. Care must be taken to avoid conditions that could decompose or irreversibly change the material.
Gold APP Instruments Corporation China is located in Beijing and manufactures laboratory instruments for measuring properties of particle, porous, powder, and fiber materials. The document provides details on outgassing procedures that should be followed when determining adsorption isotherms to ensure reproducible results. It explains that all physisorbed species must be removed from the surface of an adsorbent through outgassing, usually by exposure to high vacuum at elevated temperature. Factors like temperature, pressure change over the adsorbent, and residual pressure must be carefully controlled depending on the adsorption system.
Gold APP Instruments Corporation China is a professional researcher and manufacturer of laboratory and analytical instruments located in Beijing, China. Their instruments include BET surface area analyzers, surface area and pore size analyzers, gas pycnometers, and high pressure gas adsorption analyzers. They use these instruments to analyze properties of porous materials such as surface area, pore size, pore volume, and pore size distribution through methods like BET surface area, Langmuir surface area, t-plot, BJH pore size, and others.
Gold APP Instruments Corporation China is located in Beijing, China and provides instruments for measuring properties of particle, porous, powder and fiber materials. Their contact information and website are listed. The document then discusses some of the complexities and uncertainties involved in using physisorption methods to compute mesopore size distributions from isotherms, noting assumptions made about pore geometry and the effects of multilayer adsorption. It acknowledges that pore size distribution curves may not always accurately depict real pore structures due to these factors. Finally, it introduces Gold APP Instruments as a manufacturer of laboratory instruments for measuring surface area, pore size, and other material properties using various gas adsorption methods.
Gold APP Instruments Corporation China is a professional researcher and manufacturer of laboratory and analytical instruments located in Beijing, China. They specialize in instruments for measuring surface area, pore size, and density of particle, porous, powder, and fiber materials. These instruments include BET surface area analyzers, surface area and pore size analyzers, gas pycnometers for true density analysis, and high pressure/temperature gas adsorption analyzers. Gold APP also provides sample preparation degassing equipment.
Gold APP Instruments Corporation China is a professional researcher and manufacturer of laboratory and analytical instruments located in Beijing, China. They specialize in instruments for measuring surface area, pore size, and density of particle, porous, powder, and fiber materials. These instruments include BET surface area analyzers, surface area and pore size analyzers, gas pycnometers for true density analysis, and high pressure/temperature gas adsorption analyzers. Gold APP also provides sample preparation degassing equipment.
Gold APP Instruments is a Beijing-based company that develops, produces, and sells scientific instruments for surface area and pore size analysis. It has a reputation for high-quality products and excellent customer service. In 2013, Iowa State University visited Gold APP Instruments' headquarters and laboratories, and spoke positively about the company's software, hardware, and technical achievements. Iowa State University expressed interest in strengthening its technical cooperation with Gold APP Instruments.
Gold app instruments china successfully supplied surface area and porosity an...Gold APP Instruments Corp.
Gold APP Instruments is a Chinese company located in Beijing that develops and manufactures gas sorption analyzers. It supplies surface area and porosity analyzers for materials characterization across various industries. In 2014, Gold APP Instruments successfully supplied its V-Sorb 2800P analyzer to the National Research Institute for Chemical Technology in Nigeria, expanding its presence in the African market. The V-Sorb 2800P uses static volumetric adsorption to measure surface area and pore size parameters of nanomaterials.