Nanomaterials Release from Nano-Enabled Products

Vílchez, Alejandro; Fernández-Rosas, Elisabet; González-Gálvez, David; Vázquez‐Campos, Socorro

doi:10.1007/698_2015_409

Cited by 5 publications

(4 citation statements)

References 114 publications

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“…At present, no more than 80 studies have been published investigating the release of NMs from solid matrices. − Only half of the published studies had control raw samples and/or replicate testing. Weathering scenarios have not been widely explored (less than 20 papers), though long-term photochemical exposure is one of the most relevant processes leading to polymer degradation.…”

Section: Introductionmentioning

confidence: 99%

Influence of Nanomaterial Compatibilization Strategies on Polyamide Nanocomposites Properties and Nanomaterial Release during the Use Phase

Fernández-Rosas

Vilar

Janer

et al. 2016

Environ. Sci. Technol.

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The incorporation of small amounts of nanofillers in polymeric matrices has enabled new applications in several industrial sectors. The nanofiller dispersion can be improved by modifying the nanomaterial (NM) surface or predispersing the NMs to enhance compatibility. This study evaluates the effect of these compatibilization strategies on migration/release of the nanofiller and transformation of polyamide-6 (PA6), a thermoplastic polymer widely used in industry during simulated outdoors use. Two nanocomposites (NCs) containing SiO2 nanoparticles (NPs) with different surface properties and two multiwalled carbon nanotube (MWCNT) NCs obtained by different addition methods were produced and characterized, before and after accelerated wet aging conditions. Octyl-modified SiO2 NPs, though initially more aggregated than uncoated SiO2 NPs, reduced PA6 hydrolysis and, consequently, NM release. Although no clear differences in dispersion were observed between the two types of MWCNT NCs (masterbatch vs direct addition) after manufacture, the use of the MWCNT masterbatch reduced PA6 degradation during aging, preventing MWCNT accumulation on the surface and further release or potential exposure by direct contact. The amounts of NM released were lower for MWCNTs (36 and 108 mg/m2) than for SiO2 NPs (167 and 730 mg/m2), being lower in those samples where the NC was designed to improve the nanofiller–matrix interaction. Hence, this study shows that optimal compatibilization between NM and matrix can improve NC performance, reducing polymer degradation and exposure and/or release of the nanofiller.

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Section: Introductionmentioning

confidence: 99%

Influence of Nanomaterial Compatibilization Strategies on Polyamide Nanocomposites Properties and Nanomaterial Release during the Use Phase

Fernández-Rosas

Vilar

Janer

et al. 2016

Environ. Sci. Technol.

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“…Furthermore, up to now, nano-ecotoxicity studies have been performed using pristine ENM/Ps rather than commercial formulations as NEPs, with the latter being mostly likely to end up into water bodies across their lifecycle ( Mitrano et al, 2015 ; Pourzahedi et al, 2017 ; Salieri et al, 2018 ; Potter et al, 2019 ). In particular, NEPs in liquid formulations could more easily dissolve NPs in water and reach aquatic organisms ( Vílchez et al, 2016 ; Nowack and Mitrano, 2018 ).…”

Section: Environmental Behavior Of Silver Nanoparticlesmentioning

confidence: 99%

Building the Bridge From Aquatic Nanotoxicology to Safety by Design Silver Nanoparticles

Corsi

Desimone

Cazenave

2022

Front. Bioeng. Biotechnol.

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Nanotechnologies have rapidly grown, and they are considered the new industrial revolution. However, the augmented production and wide applications of engineered nanomaterials (ENMs) and nanoparticles (NPs) inevitably lead to environmental exposure with consequences on human and environmental health. Engineered nanomaterial and nanoparticle (ENM/P) effects on humans and the environment are complex and largely depend on the interplay between their peculiar properties such as size, shape, coating, surface charge, and degree of agglomeration or aggregation and those of the receiving media/body. These rebounds on ENM/P safety and newly developed concepts such as the safety by design are gaining importance in the field of sustainable nanotechnologies. This article aims to review the critical characteristics of the ENM/Ps that need to be addressed in the safe by design process to develop ENM/Ps with the ablility to reduce/minimize any potential toxicological risks for living beings associated with their exposure. Specifically, we focused on silver nanoparticles (AgNPs) due to an increasing number of nanoproducts containing AgNPs, as well as an increasing knowledge about these nanomaterials (NMs) and their effects. We review the ecotoxicological effects documented on freshwater and marine species that demonstrate the importance of the relationship between the ENM/P design and their biological outcomes in terms of environmental safety.

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“…To date, most nano-ecotoxicity studies have been performed using bare ENMs but it is known that they are actually released into the environment across their lifecycle (from production to usage and disposal) as NEPs [ 10 , 200 , 201 ]. The high potential for environmental exposure results particularly predominant for those NEPs in which ENMs are suspended in a liquid solution [ 202 ] since they can diffuse more easily in the aquatic environment and reach biological targets by causing toxicity [ 10 , 203 , 204 ].…”

Section: Gaps To Be Filledmentioning

confidence: 99%

Eco-Interactions of Engineered Nanomaterials in the Marine Environment: Towards an Eco-Design Framework

et al. 2021

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Marine nano-ecotoxicology has emerged with the purpose to assess the environmental risks associated with engineered nanomaterials (ENMs) among contaminants of emerging concerns entering the marine environment. ENMs’ massive production and integration in everyday life applications, associated with their peculiar physical chemical features, including high biological reactivity, have imposed a pressing need to shed light on risk for humans and the environment. Environmental safety assessment, known as ecosafety, has thus become mandatory with the perspective to develop a more holistic exposure scenario and understand biological effects. Here, we review the current knowledge on behavior and impact of ENMs which end up in the marine environment. A focus on titanium dioxide (n-TiO2) and silver nanoparticles (AgNPs), among metal-based ENMs massively used in commercial products, and polymeric NPs as polystyrene (PS), largely adopted as proxy for nanoplastics, is made. ENMs eco-interactions with chemical molecules including (bio)natural ones and anthropogenic pollutants, forming eco- and bio-coronas and link with their uptake and toxicity in marine organisms are discussed. An ecologically based design strategy (eco-design) is proposed to support the development of new ENMs, including those for environmental applications (e.g., nanoremediation), by balancing their effectiveness with no associated risk for marine organisms and humans.

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Nanomaterials Release from Nano-Enabled Products

Cited by 5 publications

References 114 publications

Influence of Nanomaterial Compatibilization Strategies on Polyamide Nanocomposites Properties and Nanomaterial Release during the Use Phase

Influence of Nanomaterial Compatibilization Strategies on Polyamide Nanocomposites Properties and Nanomaterial Release during the Use Phase

Building the Bridge From Aquatic Nanotoxicology to Safety by Design Silver Nanoparticles

Eco-Interactions of Engineered Nanomaterials in the Marine Environment: Towards an Eco-Design Framework

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