Archive for August, 2006
Surface Analysis of Medical Devices Using Secondary Ion Mass Spectrometry ( SIMS ) and X-Ray Photoelectron Spectroscopy ( XPS ) – Supplier Data by CSM
Background Surfaces of medical devices are of critical importance as they control many clinical properties including the immediate response from the biological host. Medical device developments have benefited greatly from advances in surface analytical tools such as Secondary Ion Mass Spectrometry (Imaging SIMS / ToF SIMS) and X-ray Photoelectron Spectroscopy (XPS). Consequently, the medical [...]
Read Full Post | Make a Comment ( None so far )The Role of Porosity in Reconstructive Surgery and Wound Care
Background The technique of mercury intrusion porosimetry (MIP) is well understood to be of value in the field of bioceramics and rigid high-density polyethylene porous surgical implants. One might be hesitant to use the same pressure-based technique on soft, deformable polymers e.g. polyhydroxyalkanoates (PHAs), chitosan, polylactic acid (PLA), polyglycolic acid (PGA) and their co-polymers [...]
Read Full Post | Make a Comment ( None so far )Magnesia – Forms, Applications and Production Processes
Background Fused Magnesia (MgO) is normally manufactured by the electric arc melting of caustic calcined magnesia, deadburned magnesia or raw magnesite in furnaces at temperatures in excess of 2750°C, producing a refractory product whose altered crystalline structure is such that its characteristics and performance are superior to competing materials. Magnesite Magnesite (MgCO3), the naturally occurring [...]
Read Full Post | Make a Comment ( None so far )Automotive Applications – Surface Analysis Services for the Automotive Industry Offered by CSMA
Background The automotive industry relies on a wide range of materials, ranging from polypropylene body parts to multilayer alloy coatings on engine components, to meet stringent consumer and legal requirements.Driving Forces for New Materials in the Automotive IndustryEnvironmental legislation on VOCs, chlorinated solvents and low-toxicity processes coupled with improved impact safety standards has led to [...]
Read Full Post | Make a Comment ( None so far )Magnesia – Forms, Applications and Production Processes
Background Fused Magnesia (MgO) is normally manufactured by the electric arc melting of caustic calcined magnesia, deadburned magnesia or raw magnesite in furnaces at temperatures in excess of 2750°C, producing a refractory product whose altered crystalline structure is such that its characteristics and performance are superior to competing materials. Magnesite Magnesite (MgCO3), the naturally occurring [...]
Read Full Post | Make a Comment ( None so far )Intel Researchers Create The World’s Fastest Silicon-Based Photonic Device
Intel Researchers have created the world’s fastest silicon-based photonic device. The device could have major implications on corporate data centres and eventually filter down to personal computers and other computing devices.The technology would see data sent between devices in the form encoded beams of light. Conventional systems rely on electrical signals or electrons flowing down [...]
Read Full Post | Make a Comment ( None so far )Darmstadtium ( Ds ) – The 110th Element has Officially been Named Darmstadtium
At the 42nd General Assembly of The International Union of Pure and Applied Chemistry, the 110th element was officially named Darmstadtium, and given the chemical symbol Ds.Darmstadtium’s existence was confirmed in 2001, after having been first synthesised in 1994. It was created by Hofmann et al at the Gessellschaft fur Schswerionenforschung mbH in Darmstadt in [...]
Read Full Post | Make a Comment ( None so far )Diallyl Phthalate – DAP Short Glass Fibre Reinforced
Advantages Good tensile strength, flexural modulus and elongation at break with the best combination of volume resistance and dielectric strength when compared with other modified grades of DAP. Disadvantages As with other glass filled DAP mouldings, can be anisotropic with a tendency to warp. Typical Properties Property Value Density (g/cm3) 1.75 Surface Hardness RM110 [...]
Read Full Post | Make a Comment ( None so far )Diallyl Phthalate – DAP Short Glass Fibre Reinforced; Fire Retardant
Advantages Very good fire retardant characteristics compared with non fire- retarded grades of DAP. Disadvantages Low tensile strength and lowest notched impact strength compared with other filled grades of DAP. Typical Properties Property Value Density (g/cm3). 1.8 Surface Hardness RM110 Tensile Strength (MPa) 55 Flexural Modulus (GPa) 8.5 Notched Izod (kJ/m) 0.3 Linear Expansion (/°C [...]
Read Full Post | Make a Comment ( None so far )Diallyl Phthalate – DAP Mineral Filled
Advantages Better flow and more uniform shrinkage, hence lower warpage than glass reinforced grades of DAP. Disadvantages Low heat distortion temperature and tensile strength compared with other filled grades of DAP. Typical Properties Property Value Density (g/cm3) 1.65 Surface Hardness RM110 Tensile Strength (MPa) 57 Flexural Modulus (GPa) 9.5 Notched Izod (kJ/m) 0.35 Linear [...]
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