life cycle – TechConnect Briefs

Release of Carbon Nanotubes from Nano-polymer Composites during Environmental Aging

Sahle-Demessie E., Han C., Zhao A., Wang J., Grecsek H., U.S. Environmental Protection Agency, US

Over the past two decades there has been a significant increase in commercial products incorporating engineered nanomaterials (ENM) that are now are used in electronic, cosmetics, automotive and medical products and in environmental applications. Although [...]

Life cycle considerations for engineered nanomaterials: A case study for nano-enabled coatings on drywall

Sayes C.M., Rothrock G.D., Norton C.A., West C.S., RTI International, US

Engineered nanomaterials are being incorporated into elements of the building industry. Advantages such as increased resistance to ultraviolet damage, wear and fouling of construction materials are relevant to coatings. Particles engineered at the nanometer size [...]

Life cycle considerations for engineered nanomaterials: A case study for nano-enabled coatings on drywall

Sayes C.M., Rothrock G.D., Norton C.A., West C.S., RTI International, US

Engineered nanomaterials are being incorporated into elements of the building industry. Advantages such as increased resistance to ultraviolet damage, wear and fouling of construction materials are relevant to coatings. Particles engineered at the nanometer size [...]

Nanomaterials as Nanocomposite Fillers: Cytotoxicity at Different Stages of Their Life Cycle

Mas del Molino E., Vilar G., Janer G., Fernández-Rosas E., Vázquez-Campos S., LEITAT Technological Center, ES

Since the production and utilities of NM have been growing exponentially we have decided to perform cell viability tests and mechanistic assays using different cell lines to assess the potential cytotoxicity of raw MWCNT, hydrophilic [...]

Direct Evidence of Nanoparticle Release from Epoxy Nanocomposites Exposed to 295 nm-400 nm UV Radiation

Nguyen T., Pellegrin B., Stutzman P., Shapiro A., Byrd E., Gu X., Chin J., NIST, US

Nanoparticles are increasingly used for enhancing multiple properties of polymers in many industries including construction, automobile, and aerospace. However, recent research suggests that nanoparticles might have negative effects on the environments and health safety. Since [...]

Network Aggregation of CNT at the Surface of Epoxy/MWCNT Composite Exposed to UV Radiation

Nguyen T., Pellegrin B., Mermet L., Shapiro A., Gu X., Chin J., NIST, US

CNTs are increasingly incorporated in polymers to enhance their mechanical and other properties. However, organic polymers are prone to degrade under UV radiation. Therefore, CNTs in a polymer nanocomposite will eventually be released into the [...]

Safe nanotextiles from a life cycle perspective

Som C., Halbeisen M., Koehler A., Heuberger M., Empa Materials Science and Technology, CH

The industry aims at taking advantage of the opportunities of new nanomaterials while producing safe products. A dose-effect relationship of the engineered nanoparticles is not clearly established yet. From this viewpoint, the product is only [...]

Integrating the Triple Bottom Line of Sustainability with Life Cycle Environmental Assessments for Military Non-Lethal Technologies

Saulters O., Green R., Kansas State University, US

The Non-lethal Environmental Evaluation and Remediation Consortium, comprised of M2 Technologies, Kansas State University, and CABEM Technologies, performs environmental research, training, assessment, and product development for the Department of Defense. The NEER Consortium addresses complex [...]