Different crystalline forms of titanium dioxide nanomaterial (rutile and anatase) can influence the toxicity of copper in golden mussel Limnoperna fortunei?

Nunes, Silvana Manske; Josende, Marcelo Estrella; González-Durruthy, Michael; Ruas, Caroline Pires; Gelesky, Marcos Alexandre; Romano, Luís Alberto; Fattorini, Daniele; Regoli, Francesco; Monserrat, José M.; Ventura‐Lima, Juliane

doi:10.1016/j.aquatox.2018.10.009

Cited by 17 publications

(2 citation statements)

References 41 publications

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“…With the increase of TiO2 contents as filler in the PLA polymer matrix, the crystalline peaks belonging to the TiO2 became more prominent. The appearance of these sharp diffraction peaks centered at 2θ value of 27.5°, 36°, 41.2°, and 54.3°, were assigned to the rutile phase of TiO2 which was consistent with other reported values [26,27].…”

Section: Cross Section Morphology Of Pla Nanocompositessupporting

confidence: 91%

Improvement Thermomechanical Properties of Polylactic Acid via Titania Nanofillers Reinforcement

Zorah¹,

Mustapa²,

Daud³

et al. 2020

ARFMTS

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Poly lactic acid (PLA) is a useful alternative to petrochemical commodity material used in food packaging, due to its low thermal stability and poor crystallization behaviour, it needs to improve its properties in namely terms of thermal and mechanical performance. Neat PLA was reinforced nanofiller TiO2 (titania) to improve its characteristics. Thus, the film of neat PLA and PLA nanocomposites were prepared using solvent casting and hot press methods. Diverse techniques characterized Asprepared films. To enhance the PLA miscibility, TiO2 nanoparticles were homogeneously dispersed in the PLA matrix to attain a low degree of agglomeration as explained by Field Emission Scanning Electron Microscopy (FESEM). Both XRD and differential scanning calorimetry (DSC) analyses of the reinforced nanocomposites disclosed an improvement in their crystallinity increased from 17.52 to 30.91. The dynamic mechanical analysis (DMA) indicated that the storage modulus was improved with increased TiO2 content, increased from 3.13 GPa to 3.26 GPa. Thermogravimetric analysis (TGA) results show that the addition of nanofiller improved thermal stability of the PLA nanocomposites was modified. On the other hand, the reinforced PLA nanocomposites with improved biodegradable behavior were shown to be the potential substitute of conventional petrochemical-based polymers widespread in the food packaging industries.

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Section: Cross Section Morphology Of Pla Nanocompositessupporting

confidence: 91%

Improvement Thermomechanical Properties of Polylactic Acid via Titania Nanofillers Reinforcement

Zorah¹,

Mustapa²,

Daud³

et al. 2020

ARFMTS

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“…En ninguna de las poblaciones de L. fortunei analizadas por Paolucci y otros (2014b) se observaron daños en la estructura branquial, tal como fue reportado previamente para otros organismos filtradores. Sí se observó la presencia de moco en las branquias, y aunque no pudo asociarse inequívocamente a condiciones de alta contaminación o de carga de sedimentos (Figura 4a-b), trabajos experimentales recientes muestran esta reacción característica en L. fortunei ante la presencia de metales pesados (Manske Nunes, et al, 2018). Así como fue observado en otros bivalvos (Ockelmann, 1983;Ockelmann y Dinesen, 2009; Dinesen y Morton, 2014), en L. fortunei se registró otra interesante variación en la morfología externa, que es la presencia de pelos bisales en el periostraco de ejemplares juveniles y adultos (Montalto y Rojas Molina, 2014).…”

Section: Respuestas Morfológicas a Los Cambios Ambientalesunclassified

Ventajas y límites de la variabilidad morfofisiológica para el establecimiento, la colonización y la expansión del bivalvo invasor Limnoperna fortunei en Sudamérica

Paolucci

2020

INNOTEC

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Phenotypic variability, both based on phenotypic plasticity and genetic diversity, can be a main factor affecting the invasion process of alien species. Limnoperna fortunei (Dunker 1857) was introduced in South America around 1990, in the Río de la Plata estuary, Argentina, from where it spread swiftly to cover most of the basin and other smaller watersheds. However, some environments have not been colonized and, presumably, the survival of this species was affected by different environmental factors such as suspended solids, salinity, and pollution. L. fortunei showed high genetic and morphological variability, showing a distribution strongly affected by human activities and its dispersal vectors. The degree of phenotypic variability would be playing a main role in its establishment, or not, in the different environments. Morphological and metabolic variations, including changes in the growth rate, development of internal organs or changes in the rate of filtration and respiration in border areas of its distribution or under extreme environmental conditions, would allow to explain, together with other variables such as the presence of dispersal vectors, the current distribution pattern.

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Rethinking Nano‐TiO₂ Safety: Overview of Toxic Effects in Humans and Aquatic Animals

Luo

Xie

et al. 2020

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Titanium dioxide nanoparticles (nano‐TiO2) are widely used in consumer products, raising environmental and health concerns. An overview of the toxic effects of nano‐TiO2 on human and environmental health is provided. A meta‐analysis is conducted to analyze the toxicity of nano‐TiO2 to the liver, circulatory system, and DNA in humans. To assess the environmental impacts of nano‐TiO2, aquatic environments that receive high nano‐TiO2 inputs are focused on, and the toxicity of nano‐TiO2 to aquatic organisms is discussed with regard to the present and predicted environmental concentrations. Genotoxicity, damage to membranes, inflammation and oxidative stress emerge as the main mechanisms of nano‐TiO2 toxicity. Furthermore, nano‐TiO2 can bind with free radicals and signal molecules, and interfere with the biochemical reactions on plasmalemma. At the higher organizational level, nano‐TiO2 toxicity is manifested as the negative effects on fitness‐related organismal traits including feeding, reproduction and immunity in aquatic organisms. Bibliometric analysis reveals two major research hot spots including the molecular mechanisms of toxicity of nano‐TiO2 and the combined effects of nano‐TiO2 and other environmental factors such as light and pH. The possible measures to reduce the harmful effects of nano‐TiO2 on humans and non‐target organisms has emerged as an underexplored topic requiring further investigation.

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Different crystalline forms of titanium dioxide nanomaterial (rutile and anatase) can influence the toxicity of copper in golden mussel Limnoperna fortunei?

Cited by 17 publications

References 41 publications

Improvement Thermomechanical Properties of Polylactic Acid via Titania Nanofillers Reinforcement

Improvement Thermomechanical Properties of Polylactic Acid via Titania Nanofillers Reinforcement

Ventajas y límites de la variabilidad morfofisiológica para el establecimiento, la colonización y la expansión del bivalvo invasor Limnoperna fortunei en Sudamérica

Rethinking Nano‐TiO₂ Safety: Overview of Toxic Effects in Humans and Aquatic Animals

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Different crystalline forms of titanium dioxide nanomaterial (rutile and anatase) can influence the toxicity of copper in golden mussel Limnoperna fortunei?

Cited by 17 publications

References 41 publications

Improvement Thermomechanical Properties of Polylactic Acid via Titania Nanofillers Reinforcement

Improvement Thermomechanical Properties of Polylactic Acid via Titania Nanofillers Reinforcement

Ventajas y límites de la variabilidad morfofisiológica para el establecimiento, la colonización y la expansión del bivalvo invasor Limnoperna fortunei en Sudamérica

Rethinking Nano‐TiO2 Safety: Overview of Toxic Effects in Humans and Aquatic Animals

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Rethinking Nano‐TiO₂ Safety: Overview of Toxic Effects in Humans and Aquatic Animals