Barrier properties of poly(vinyl alcohol) membranes containing carbon nanotubes or activated carbon

Surdo, Erin M.; Khan, Iftheker A.; Choudhury, Atif A.; Saleh, Navid B.; Arnold, William A.

doi:10.1016/j.jhazmat.2011.01.130

Cited by 10 publications

(8 citation statements)

References 47 publications

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“…The scattering intensity was plotted against the scattering wave vector in a log–log plot. Fractal dimensions of the AuNM agglomerates were computed using the slope of the best fit straight line using the method described elsewhere in the colloid literature 73. The fractal dimension measurements were also replicated to confirm that results are reproducible.…”

Section: Methodsmentioning

confidence: 99%

Does Shape Matter? Bioeffects of Gold Nanomaterials in a Human Skin Cell Model

et al. 2012

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Gold nanomaterials (AuNMs) have distinctive electronic and optical properties, making them ideal candidates for biological, medical, and defense applications. Therefore, it is imperative to evaluate the potential biological impact of AuNMs before employing them in any application. This study investigates two AuNMs with different aspect ratios (AR) on mediation of biological responses in the human keratinocyte cell line (HaCaT) to model potential skin exposure to these AuNMs. The cellular responses were evaluated by cell viability, reactive oxygen species (ROS) generation, alteration in gene and protein expression, and inflammatory response. Gold nanospheres, nominally 20 nm in diameter and coated with mercaptopropane sulfonate (AuNS-MPS), formed agglomerates when dispersed in cell culture media, had a large fractal dimension (D(f) = 2.57 ± 0.4) (i.e., tightly bound and densely packed) and were found to be nontoxic even at the highest dose of 100 μg/mL. Highly uniform, 16.7 nm diameter, and 43.8 nm long polyethylene glycol-capped gold nanorods (AuNR-PEG) also formed agglomerates when dispersed into the cell culture media. However, the agglomerates had a smaller fractal dimension (D(f) = 1.28 ± 0.08) (i.e., loosely bound) and were found to be cytotoxic to the HaCaT cells, with a significant decrease in cell viability occurring at 25 μg/mL and higher. Moreover, AuNR-PEG caused significant ROS production and up-regulated several genes involved in cellular stress and toxicity. These results, combined with increased levels of inflammatory and apoptotic proteins, demonstrated that the AuNR-PEG induced apoptosis. Exposure to AuNS-MPS, however, did not show any of the detrimental effects observed from the AuNR-PEG. Therefore, we conclude that shape appears to play a key role in mediating the cellular response to AuNMs.

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Section: Methodsmentioning

confidence: 99%

Does Shape Matter? Bioeffects of Gold Nanomaterials in a Human Skin Cell Model

et al. 2012

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“…All these sectors benefit from PVA's unique properties, including excellent film formation, resistance to organic solvents, gas barrier properties, especially to oxygen, adhesive properties, biocompatibility, and to some extent, biodegradability (Chiellini et al, 2003). PVAbased composites have been developed in the past using various fillers like inorganic oxides (Yang, 2007;Dodda et al, 2015), clays (Strawhecker and Manias, 2000;Podsiadlo et al, 2007;Sapalidis et al, 2012), CNTs (Shaffer and Windle, 1999;Paiva et al, 2004;Ciambelli et al, 2005;Liu et al, 2005;Bhattacharya et al, 2006;Miaudet et al, 2007;Minus et al, 2010;Surdo et al, 2011;Li et al, 2013), graphene oxide (Salavagione et al, 2009a;Zhao et al, 2010;Swati et al, 2015;Ma et al, 2016), reduced graphene oxide (Salavagione et al, 2009b;Pourjavadi et al, 2015;Manna et al, 2016), or biomaterials (Sapalidis et al, 2007), all targeting to significantly improve the mechanical and thermal stability along with gas permeability, while trying to preserve the excellent optical transparency of PVA. As mentioned previously, the key parameter for successful preparation of polymer nanocomposites is the effective filler dispersion.…”

Section: Introductionmentioning

confidence: 99%

“…Minus et al (2010) studied the crystallization of PVA in the presence of SWCNTs and they suggested that PVA molecules are aligned parallel to the SWNT axis. Surdo et al (2011) studied the gas barrier properties of PVA/SWCNTs films for both hydrophobic organic and heavy metal pollutants.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Antibacterial Poly(Vinyl Alcohol) Nanocomposite Films Containing Dendritic Polymer Functionalized Multi-Walled Carbon Nanotubes

et al. 2018

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A series of poly(vinyl alcohol) (PVA) nanocomposite films containing quaternized hyperbra nched polyethyleneimine (PEI) functionalized multiwalled carbon nanotubes (oxCNTs@ QPEI) are prepared by solvent casting technique. The modified carbonbased material exhibits high aqueous solubility, due to the hydrophilic character of the functionalized hyperbranched dendritic polymer. The quaternized PEI successfully wraps around nano tube walls as polycations provide electrostatic repulsion. Various contents of oxCNTs@ QPEI ranging from 0.05 to 1.0% w/w were employed to prepare functionalized PVA nanocomposites. The developed films exhibit adequate optical transparency, improved mechanical properties and extremely high antibacterial behavior due to the excellent dispersion of the functionalized CNTs into the PVA matrix.

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“…Approaches have also been made for decontaminating a section without dehumidification [18]. In addition, one strategy that has been practiced to be safe from chemical contamination of the environment is to make barrier against these chemicals [19]; this strategy has been mostly practiced to be safe from hazardous chemicals and thus not user friendly. The activated carbon liners and insulating rubber have been examined to create barrier against hazardous chemical contamination.…”

Section: Introductionmentioning

confidence: 99%

Study of the indoor decontamination using nanocoated woven polyester fabric

et al. 2016

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This research primarily deals with the photocatalytic degradation of methanol in indoor air using nanocoated indoor textiles used for curtains as household textiles. The woven polyester was coated by titanium dioxide by sol gel method, using silicon-based binder. The characterization of the coating has been done using scanning electron microscopy (SEM) image analysis, energy dispersive analysis using X-ray (EDAX) and Fourier transform infrared spectroscopy (FTIR). The DIY instrument providing the similar environment as of indoor was designed to assess the performance of the degradation of formaldehyde under UV light. The photocatalytic degradation rate was measured using the absorption value of the solutions obtained in the result of liquid chromatography of test solution and reagent solution. Different amount of dosages (1-3 %) and different time period of coatings (half hour to 3 h) have been evaluated for optimization.

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Barrier properties of poly(vinyl alcohol) membranes containing carbon nanotubes or activated carbon

Cited by 10 publications

References 47 publications

Does Shape Matter? Bioeffects of Gold Nanomaterials in a Human Skin Cell Model

Does Shape Matter? Bioeffects of Gold Nanomaterials in a Human Skin Cell Model

Fabrication of Antibacterial Poly(Vinyl Alcohol) Nanocomposite Films Containing Dendritic Polymer Functionalized Multi-Walled Carbon Nanotubes

Study of the indoor decontamination using nanocoated woven polyester fabric

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