Methods evaluation for assessing release of manufactured nanomaterials from polymers, consistent with the NanoGRID framework : Advanced and Additive Materials : Sustainability for Army Acquisitions

Abstract

The U.S. Army Engineer Research and Development Center (ERDC) solves the nation's toughest engineering and environmental challenges. ERDC develops innovative solutions in civil and military engineering, geospatial sciences, water resources, and environmental sciences for the Army, the Department of Defense, civilian agencies, and our nation's public good. Find out more at www.erdc.usace.army.mil. To search for other technical reports published by ERDC, visit the ERDC online library at https://erdc-library.erdc.dren.mil.

Frameworks for screening and risk management of chemicals and advanced materials: A critical review

“…Within the context of hazard and toxicity, the NanoGRID framework specifically focuses on ecotoxicity and addresses the unique physicochemical properties associated with ENMs. Although the current adaptation of the framework tool does not address human receptors, there are plans to incorporate those data in future versions (Haber et al, 2019). For exposure potential, the NanoGRID framework focuses on usage patterns and predicting environmental concentrations at various stages of the ENM life cycle.…”

Morphologic alterations across three levels of biological organization following oral exposure to silver-polymer nanocomposites in Japanese medaka (Oryzias latipes)

“…33 Nanomaterials released over a product's lifetime comprise only part of the equation for potential exposure and toxicity of nanocomposites. Particles released during machining (e.g., abrading, cutting), environmental degradation and/or aging of products are largely composed of the polymer matrix 4,[34][35][36] and, in the case of plastic nanocomposites, often in the form of microplastics (MPs). 37 Glycol-modified polyethylene terephthalate (PETG, (C 10 H 8 O 4 ) n ) is one such polymer widely used for applications such as 3D printing due to its transparency, higher thermal resistance, durability, and high elastic modulus.…”