Titanium dioxide and fluoropolymer-based coating for smart fabrics with antimicrobial and water-repellent properties

The fabrics coated with TiO2 photocatalyst and fluoropolymer exhibit good water-repellent and antimicrobial properties. The coated fabrics can be used in the fabrication of smart gowns and scrub suits as protective clothing for medical staff.

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Safety Assessment of Polypyrrole Nanoparticles and Spray-Coated Textiles

Nanomaterials ◽

10.3390/nano11081991 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1991

Author(s):

Rossella Bengalli ◽

Luisa Fiandra ◽

Claudia Vineis ◽

Diego Omar Sanchez-Ramirez ◽

Nuno G. Azoia ◽

...

Keyword(s):

Wound Care ◽

Antimicrobial Properties ◽

Spray Coating ◽

Skin Toxicity ◽

In Vitro Models ◽

Skin Contact ◽

Artificial Sweat ◽

Coated Fabrics ◽

Textile Coating

Polypyrrole (PPy) nanoparticles (NPs) are used for the coating of materials, such as textiles, with biomedical applications, including wound care and tissue engineering, but they are also promising antibacterial agents. In this work, PPy NPs were used for the spray-coating of textiles with antimicrobial properties. The functional properties of the materials were verified, and their safety was evaluated. Two main exposure scenarios for humans were identified: inhalation of PPy NPs during spray (manufacturing) and direct skin contact with NPs-coated fabrics (use). Thus, the toxicity properties of PPy NPs and PPy-coated textiles were assessed by using in vitro models representative of the lung and the skin. The results from the materials’ characterization showed the stability of both the PPy NP suspension and the textile coating, even after washing cycles and extraction in artificial sweat. Data from an in vitro model of the air–blood barrier showed the low toxicity of these NPs, with no alteration of cell viability and functionality observed. The skin toxicity of PPy NPs and the coated textiles was assessed on a reconstructed human epidermis model following OECD 431 and 439 guidelines. PPy NPs proved to be non-corrosive at the tested conditions, as well as non-irritant after extraction in artificial sweat at two different pH conditions. The obtained data suggest that PPy NPs are safe NMs in applications for textile coating.

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Performance Study of Nano-TiO2 Modified Fabric

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.549.733 ◽

2012 ◽

Vol 549 ◽

pp. 733-736

Author(s):

Xiao Mian Chen ◽

Jing Jing Shi ◽

Hong Sha Su ◽

Chun Ting Lin ◽

En Long Yang

Keyword(s):

Titanium Dioxide ◽

Catalytic Activity ◽

Catalytic Properties ◽

Antibacterial Property ◽

Wear Behavior ◽

Water Repellency ◽

Innovative Technology ◽

Water Repellent ◽

High Catalytic Activity ◽

Performance Study

The catalytic properties of nano-TiO2 modified fabric suits the demand for self-cleaning in recent years. In this paper, advanced and innovative technology were used to synthesize water sol of titanium dioxide photocatalyst with high catalytic activity for fabric finishing. The wear behavior, antibacterial property and water repellency of treated and untreated fabric were tested. Results indicate that finishing and washing of the titanium dioxide had no effect on wear behavior; finished and washed fabric has a certain antibacterial and water repellent properties.

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Curing Time and Water Repellent Properties of Dammar-Titanium Dioxide Thin Film

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1112.359 ◽

2015 ◽

Vol 1112 ◽

pp. 359-362

Author(s):

Aisyah Nor Hasnan ◽

Azizah Hanom Ahmad

Keyword(s):

Contact Angle ◽

Titanium Dioxide ◽

Contact Angle Measurement ◽

Angle Measurement ◽

Water Repellent ◽

Coating System ◽

Curing Time ◽

Coating Surface ◽

Natural Resin ◽

Before And After

Dammar plant resin is a local natural resin that can be bled from Dipterocaupacea sp of tree. It can be found abundantly in Malaysia’s tropical forest especially in Sarawak. Dammar and Titanium Dioxide was mixed in a various wt% to produce Dammar-modified Titanium Dioxide coating system. The modified coating systems were then spin-coated onto Aluminium Q-panel as the substrate. Coated Q-panels were left to cure at room temperature. The curing time was evaluated using dust free stage. The addition of Titanium Dioxide into the coating system fastens the curing time taken for the coated Q-panel to be cure. It only took about 11-12 minutes to dry compared to the coating system before the addition of Titanium Dioxide where a quite long duration required, 32 minutes. Contact angle measurement was also carried out in order to determine the wettability of the coating system. The surface coated with dammar-modified titanium dioxide found to be hydrophobic where a quite large contact angle obtained for the sample with 3 wt% of Titanium Dioxide (PDT3). The water droplets actually rest on the coating surface without wetting the surface. Water absorption test was done to strengthen the contact angle results where coated substrate was soaked into distilled water for 24 hours and being weighed before and after soaking. The difference of before and after soaking weigh showed that the coating surface does not absorb that much water where only approximately 0.02% of water being absorbed by the coating system for 3 wt%. It proved that the coating systems applied are hydrophobic.

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Fabrication of hybrid polystyrene‐titanium dioxide with enhanced dye degradation and antimicrobial properties: investigation of the effect of the TEGDMA on photocatalytic activity

Polymer International ◽

10.1002/pi.6346 ◽

2021 ◽

Author(s):

Siripan Metanawin ◽

Tanapak Metanawin

Keyword(s):

Titanium Dioxide ◽

Photocatalytic Activity ◽

Dye Degradation ◽

Antimicrobial Properties

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A Review on Antimicrobial Properties of Metal Nanoparticles

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2020.17677 ◽

2020 ◽

Vol 20 (6) ◽

pp. 3303-3339 ◽

Cited By ~ 10

Author(s):

Saee Gharpure ◽

Aman Akash ◽

Balaprasad Ankamwar

Keyword(s):

Titanium Dioxide ◽

Metal Oxide ◽

Biomedical Applications ◽

Antimicrobial Agents ◽

Metal Oxide Nanoparticles ◽

Antimicrobial Properties ◽

Multidrug Resistant ◽

Oxide Nanoparticles ◽

Synthesis Methods ◽

Micro Organisms

The field of nanotechnology elaborates the synthesis, characterization as well as application of nanomaterials. Applications of nanoparticles in various fields have interested scientists since decades due to its unique properties. Combination of pharmacology with nanotechnology has helped in development of newer antimicrobial agents in order to control the ever increasing multidrug resistant micro-organisms. Properties of metal and metal oxide nanoparticles like silver, gold, titanium dioxide as well as magnesium oxide as antimicrobial agents are very well known. This review elaborates synthesis methods and antimicrobial mechanisms of various metal as well as metal oxide nanoparticles for better understanding in order to utilize their potentials in various biomedical applications.

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Morphology of the surface and magnetic resonance properties of lavsan modified by steel clusters by ion-plasma exposure

Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY) ◽

10.21122/1683-6065-2019-3-142-146 ◽

2019 ◽

pp. 142-146

Author(s):

A. G. Anisovich ◽

I. P. Akula ◽

A. P. Laskovnev ◽

M. I. Markevich ◽

V. T. Stelmakh ◽

...

Keyword(s):

Magnetic Resonance ◽

Polyethylene Terephthalate ◽

Protective Clothing ◽

Fire Hazard ◽

Polymeric Materials ◽

Plasma Source ◽

Resonance Absorption ◽

Static Electricity ◽

Resonance Properties ◽

Coated Fabrics

Polymeric materials are mainly dielectrics. The use of protective clothing made of such materials may occur accumulation of static electricity. The electrification of materials creates a fire hazard in the presence of dust and various gas mixtures. For reducing the accumulation of static electricity charges on the surface of protective clothing carried out the modification of polyethylene terephthalate by clusters of steel 12X18H10T. Modification was carried out in a vacuum using stationary metal plasma source operating in the mode of separations. The process was carried out by alternating periods of the source plasma (1 minute) and pause for tissue cooling (1 minute).The results of the study of the surface morphology of polyethylene terephthalate steel coated fabrics and magnetic resonance absorption measurements of microwave energy is given. The main regularities of the magnetic-resonance absorption spectra are revealed. Method of electronic magnetic resonance (EMR) found that the spectra are inhomogeneous broadened broad lines with effective g-factor value of 2.2±0.1 and the line width of 110.1 mTl. It was found that the non-resonance absorption of the electromagnetic field of microwave is insignificant.

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Germ-Reducing Titanium Dioxide - Silicone Rubber Composites

Materials Science Forum ◽

10.4028/www.scientific.net/msf.976.3 ◽

2020 ◽

Vol 976 ◽

pp. 3-8

Author(s):

Theresa Fischer ◽

Susana Suttor ◽

Salma Mansi ◽

Markus Ahrens ◽

Markus Eblenkamp

Keyword(s):

Titanium Dioxide ◽

Silicone Rubber ◽

Bulk Material ◽

Matrix Material ◽

Polymer Surface ◽

Antimicrobial Properties ◽

Photocatalytic Effect ◽

Synthetic Materials ◽

The Matrix ◽

Materials Research

Germs are present in all areas of everyday life and can lead to dangerous infections. Surfaces with antimicrobial properties are used to reduce the risk of infection in sanitary facilities and hospitals. Apart from the addition of biocides or antibiotic agents to synthetic materials, research shows that it is possible to use the semiconductor titanium dioxide (TiO2) to generate antibacterial surfaces. Photocatalytically active TiO2 leads to the development of reactive oxygen species (ROS) that are able to kill germs. The aim of this research is to use TiO2 to generate antibacterial bulk material. Nanostructured TiO2 particles were incorporated into silicone rubber to obtain a photocatalytic active polymer surface. High temperature vulcanizing (HTV) silicone rubber was used as a matrix material, and samples with 10 wt% of TiO2 were produced. The distribution of TiO2 particles in the matrix was analyzed via light microscopy. The photocatalytic activity on the surface of the test samples was studied via microbial testing with E.coli bacteria. The samples showed different intensities of the photocatalytic effect depending on the type of additive. The effort to create a germ reducing silicone rubber surface by using TiO2 as an additive was successful.

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Synthesis of Hydrophobic Viscose Rayon Fiber Using Nanorod Silica and Chitosan as Surface Modifier

Materials Science Forum ◽

10.4028/www.scientific.net/msf.909.255 ◽

2017 ◽

Vol 909 ◽

pp. 255-260

Author(s):

Adi Surya Pradipta ◽

Wiwiek Eka Mulyani ◽

Bambang Sunendar Purwasasmita

Keyword(s):

Viscose Rayon ◽

Sol Gel ◽

Hydrophobic Effect ◽

Synthesis Process ◽

Wet Spinning ◽

Water Repellent ◽

Small Particles ◽

Hydrophobic Property ◽

Characterization Methods ◽

Smart Fabrics

Hydrophobic textile is a type of smart fabrics. Some of it are commonly coated with small particles and finally treated by water repellent agent in terms of acquiring its hydrophobic property. This research describes how hydrophobic textile are formed from its initial form of fabrics and even yarn, which are fibers. Synthesis process was commenced through wet spinning of viscose rayon mixed with nanorod silica which has been formerly produced with sol gel method. These fibers were then coated with chitosan and dried out by vacuum instrument. Scanning Electron Microscopy (SEM) results showed that nanorod silica were well attached on the fibers. Followed by Energy Dispersive Spectroscopy (EDS) mapping characterization, silica particles were moderately dispersed on its surface, performing roughness and creating hydrophobic effect. In addition, several characterization methods correlated to water absorption of the fibers were conducted. Fibers swelling percentage decreased from 50.2% to 17.13%, while moisture regain (MR) number also decreased from 14.28 to 10.72.

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Polymerization-Induced Phase Segregation and Self-Assembly of Siloxane Additives to Provide Thermoset Coatings with a Defined Surface Topology and Biocidal and Self-Cleaning Properties

Nanomaterials ◽

10.3390/nano9111610 ◽

2019 ◽

Vol 9 (11) ◽

pp. 1610 ◽

Cited By ~ 1

Author(s):

Jaleh Mansouri ◽

Vi Khanh Truong ◽

Shane MacLaughlin ◽

David E. Mainwaring ◽

Graeme Moad ◽

...

Keyword(s):

Titanium Dioxide ◽

Self Assembly ◽

Antimicrobial Properties ◽

Phase Segregation ◽

Surface Topology ◽

Stimuli Responsive ◽

Antibacterial Performance ◽

Self Cleaning ◽

Pigmented Coatings ◽

Coating Formulation

In this work, we report on the incorporation of a siloxane copolymer additive, poly((2-phenylethyl) methylsiloxane)-co(1-phenylethyl) methylsiloxane)-co-dimethylsiloxane), which is fully soluble at room temperature, in a rapid-cure thermoset polyester coating formulation. The additive undergoes polymerization-induced phase segregation (PIPS) to self-assemble on the coating surface as discrete discoid nanofeatures during the resin cure process. Moreover, the copolymer facilitates surface co-segregation of titanium dioxide pigment microparticulate present in the coating. Depending on the composition, the coatings can display persistent superhydrophobicity and self-cleaning properties and, surprisingly, the titanium dioxide pigmented coatings that include the siloxane copolymer additive display high levels of antibacterial performance against Gram-positive (Staphylococcus aureus) and Gram-negative (Pseudomonas aeruginosa) bacteria. This antibacterial performance is believed to be associated with the unique surface topology of these coatings, which comprise stimuli-responsive discoid nanofeatures. This paper provides details of the surface morphology of the coatings and how these relates to the antimicrobial properties of the coating.

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