Modification of polyester fabrics with nanosized titanium dioxide to impart photoactivity

Prorokova, N. P.; Kumeeva, T. Yu.; Агафонов, А. В.; Иванов, В. К.

doi:10.1134/s2075113317050264

Cited by 7 publications

(17 citation statements)

References 20 publications

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“…For example, as a preventative measure to bacterial growth on textiles, various antimicrobial treatments such as quaternary ammonium compounds, triclosan, and chitosan have been incorporated into fibers [ 9 ]; however, those materials often fail to kill every organism effectively. Biocidal nanoparticles including silver [ 10 , 11 , 12 ], copper [ 12 , 13 ], titanium dioxide [ 14 , 15 , 16 ], and zinc oxide [ 17 , 18 , 19 ] are also used, where silver is particularly effective at interfering with bacterial metabolism. However, the adverse effect of those reactive species on human cells is still obscure, and the environmental and toxicological [ 20 , 21 , 22 ] concerns about using nanoparticles still remain.…”

Section: Introductionmentioning

confidence: 99%

Bacteria Adhesion of Textiles Influenced by Wettability and Pore Characteristics of Fibrous Substrates

2021

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Bacteria adhesion on the surface is an initial step to create biofouling, which may lead to a severe infection of living organisms and humans. This study is concerned with investigating the textile properties including wettability, porosity, total pore volume, and pore size in association with bacteria adhesion. As model bacteria, Gram-negative, rod-shaped Escherichia coli and the Gram-positive, spherical-shaped Staphylococcus aureus were used to analyze the adhesion tendency. Electrospun webs made from polystyrene and poly(lactic acid) were used as substrates, with modification of wettability by the plasma process using either O2 or C4F8 gas. The pore and morphological characteristics of fibrous webs were analyzed by the capillary flow porometer and scanning electron microscopy. The substrate’s wettability appeared to be the primary factor influencing the cell adhesion, where the hydrophilic surface resulted in considerably higher adhesion. The pore volume and the pore size, rather than the porosity itself, were other important factors affecting the bacteria adherence and retention. In addition, the compact spatial distribution of fibers limited the cell intrusion into the pores, reducing the total amount of adherence. Thus, superhydrophobic textiles with the reduced total pore volume and smaller pore size would circumvent the adhesion. The findings of this study provide informative discussion on the characteristics of fibrous webs affecting the bacteria adhesion, which can be used as a fundamental design guide of anti-biofouling textiles.

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Section: Introductionmentioning

confidence: 99%

Bacteria Adhesion of Textiles Influenced by Wettability and Pore Characteristics of Fibrous Substrates

2021

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“…As work [19] showed, depositing a small amount of TiO 2 nanoparticles onto a pre-activated polyester fabric leads to the formation of an ultrathin continuous coating on thesurface of every thread of the fabric. The best qualitative characteristics and high adhesion are achieved at the TiO 2 content of 8 g/m 2 on the surface.…”

Section: Resultsmentioning

confidence: 99%

“…In contrast to the above-mentioned studies, in work [19], we suggested coating a polyester fibre material with a very small number of TiO 2 nanoparticles. As a result, an ultrathin coating of these particles is formed on the fibre surface.…”

Section: Introductionmentioning

confidence: 85%

“…This means that it is possible to deposit TiO 2 nanoparticles on fibrous materials in quantities sufficient for the formation of a continuous photochemically active coating on every thread, but insufficient for their deposition in the inter-fibre space. We established that modification even with such small TiO 2 amount makes a polyester fabric capable of discolouring coloured contaminants on its surface [19], but the modified fabric does not acquire the ability to inhibit the vital activity of microorganisms.…”

Section: Introductionmentioning

confidence: 99%

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Formation of Coatings Based on Titanium Dioxide Nanosolson Polyester Fibre Materials

2020

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In this paper, we show that functionalization of fibrous materials through coating formation is hindered by the need to preserve the capillary-porous system of the fabric and its drapability. Additionally, such coatings must be resistant to abrasion and washing. We consider ways of solving these problems by analysing the formation of a stable coating based on photoactive titanium dioxide on a polyester fibre material as an example. The purpose of such coatings is to destroy coloured organic contaminants when the fabric is exposed to sunlight. We show that a polyester fabric with a titanium dioxide coating can become highly photochemically active and capable of inhibiting the vital activity of gram-negative bacteria and remaining soft and breathable at the same time. We also determined that depositing a titanium dioxide coating does not reduce the polyester fabric tensile strength. Polyester fabrics with photoactive properties can be widely used as decorative and trimming materials—for housing decoration, production of curtains and other decorative interior design elements.

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“…37 Prorokova et al have investigated the use of TiO 2 particulate coatings to create self-cleaning fibers. 38,39 As TiO 2 nanoparticles absorb light in the presence of water vapor, they form reactive oxygen species (ROS) which degrade any unwanted compounds forming within a material or on its surface through a radical mechanism. In plastics, ROS scavengers often prevent further degradation of the polymeric matrix.…”

Section: Introductionmentioning

confidence: 99%

Enhanced photodegradation of TiO₂‐containing poly(ε‐caprolactone)/poly(lactic acid) blends

Davis

Thapa

Hartline

et al. 2021

Journal of Polymer Science

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The calamitous accumulation of plastic waste in the environment, especially single-use disposables, calls for new approaches to materials design. One method to address the persistence of plastics beyond their intended use is to impart them with functionalities that will either allow for their recyclability or their degradation to basic natural components. This work focuses on the fabrication of photodegradable polyester blends and investigates the impact of compatibilization on photodegradation rates. Specifically, we blended poly (ε-caprolactone) (PCL) and poly(lactic acid) (PLA) polymers by (reactive) extrusion in the presence or absence of dicumyl peroxide (DCP), a radical generator, and titanium dioxide (TiO 2 ), an inorganic photocatalyst. We examined the effects of DCP and TiO 2 loadings as well as copolymer composition on the thermomechanical properties, photodegradability, and morphology. We found that the inclusion of TiO 2 dramatically increased flexural moduli and photodegradation rates in both dry and wet conditions, while reactive compatibilization had little effect of the tested properties. This simple and scalable approach is promising to fabricate materials that can readily photodegrade.

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Modification of polyester fabrics with nanosized titanium dioxide to impart photoactivity

Cited by 7 publications

References 20 publications

Bacteria Adhesion of Textiles Influenced by Wettability and Pore Characteristics of Fibrous Substrates

Bacteria Adhesion of Textiles Influenced by Wettability and Pore Characteristics of Fibrous Substrates

Formation of Coatings Based on Titanium Dioxide Nanosolson Polyester Fibre Materials

Enhanced photodegradation of TiO₂‐containing poly(ε‐caprolactone)/poly(lactic acid) blends

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Modification of polyester fabrics with nanosized titanium dioxide to impart photoactivity

Cited by 7 publications

References 20 publications

Bacteria Adhesion of Textiles Influenced by Wettability and Pore Characteristics of Fibrous Substrates

Bacteria Adhesion of Textiles Influenced by Wettability and Pore Characteristics of Fibrous Substrates

Formation of Coatings Based on Titanium Dioxide Nanosolson Polyester Fibre Materials

Enhanced photodegradation of TiO2‐containing poly(ε‐caprolactone)/poly(lactic acid) blends

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Enhanced photodegradation of TiO₂‐containing poly(ε‐caprolactone)/poly(lactic acid) blends