release – TechConnect Briefs

Quantifying release of nano- and advanced materials

Brame J., Poda A., Alberts E., Jackson C., Kennedy A., US Army Engineer Research and Development Center, US

The same unique properties of Manufactured Nanomaterials (MNs) and Advanced Materials (AMs) that make them desirable for new product applications may also increase their environmental health and safety (EHS) uncertainty , leading to high risk [...]

Developing a fundamental understanding of polymer nanocomposite photodegradation and CNT release characteristics

Lankone R.S., Wang J., Ranville J.F., Fairbrother D.H., John's Hopkins University, US

As the development, production, and use of polymer nanocomposites continues to rise, so too does the likelihood for exposure of their embedded nanoparticles to humans and the environment following nanoparticle release. The release of carbon [...]

Encapsulation and controlled thermal release of vegetable oils from organic nanoparticles for functional coating applications

Samyn P., Stanssens D., University of Freiburg - Freiburg Institute for Advanced Studies, DE

Nanoparticle pigments of poly(styrene-maleimide) or SMI have been synthesized containing different vegetable oils that favourably can be applied as a barrier resistant coating against water and oil penetration onto paper substrates and regulate its surface [...]

The Study of Surface Accumulated Silica Nanoparticles from “Weathered” Polymer Nanocomposites Using ICP-OES

Rabb S.A., Stanley D., Sung L., Nguyen T., Yu L.L., National Institute of Standards and Technology, US

The impact of nanoparticles on the environment and, more importantly, the human population has been of great interest for the past few years. Release of these nanoparticles from different materials from wear or climate exposure [...]

The Study of Surface Accumulated Silica Nanoparticles from “Weathered” Polymer Nanocomposites Using ICP-OES

Rabb S.A., Stanley D., Sung L., Nguyen T., Yu L.L., National Institute of Standards and Technology, US

The impact of nanoparticles on the environment and, more importantly, the human population has been of great interest for the past few years. Release of these nanoparticles from different materials from wear or climate exposure [...]

Nanoaerosol release characteristics of wallpaper coated with TiO2 nanoparticles in an air-jet simulated test chamber

Bae G.N., Park S.H., Lee S.B., Kim J.B., Korea Institute of Science and Technology, KR

Consumer nanoproducts are interested in public health aspects. In Korea, wallpaper is a popular construction material of housing. Wallpaper is well known to emit various volatile organic compounds and carbonyl compounds. Some wallpaper is coated [...]

Analytical Strategies for a systematic Characterization of Nanoparticle Release from commercial Spray Products for Exposure Quantification and Risk Assessment

Losert S., Hungerbühler K., Lattuada M., Ulrich A., EMPA, CH

The characterization of nanoparticle release from consumer spray products is challenging. Therefore, we developed different analytical methods to determine quantity, morphology, size and elemental distribution for engineered nanoparticles in the original spray suspension and the [...]

Investigation of Silica Nanoparticles Accumulated on the Surface of Polymer Nanocomposites Exposed to UV Radiation Using ICP-OES

Rabb S.A., Yu L.L., Bernard C., Nguyen T., NIST, US

Silica nanoparticles are being utilized to enhance the mechanical performance of polymeric materials used in the automotive and construction industries. However, cumulative effects of UV radiation will degrade the polymeric molecules, resulting in a potential [...]

FreeNano – Test Methods for Release of Pigment-Nanoparticles Into the Environment at the End of Life Cycle

Stintz M., TU Dresden, DE

Several coatings with and without nanoscaled additives and pigments were exposed to artificial aging and weathering, before they experienced a mechanical treatment by sanding with process parameters similar to professional sanding condition. The miniature sanding [...]

Nanoparticle Release from Polymer Nanocomposites Used for Potable Water Infrastructure and Food Packaging: Current Progress & Beyond

Whelton A.J., Duncan T.V., Koontz J.L., Nguyen T., University of South Alabama, US

Engineered nanoparticles (ENP) are increasingly being integrated into polymeric infrastructure and food packaging materials worldwide. ENPs can improve product strength, extend infrastructure service life, and increase a polymer’s antimicrobial resistance and oxygen barrier properties. While [...]