coated fabrics
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2022 ◽  
pp. 152808372110569
Author(s):  
Tamara Ruiz-Calleja ◽  
Rocío Calderón-Villajos ◽  
Marilés Bonet-Aracil ◽  
Eva Bou-Belda ◽  
Jaime Gisbert-Payá ◽  
...  

Knife-coating can confer new properties on different textile substrates efficiently by integrating various compounds into the coating paste. Graphene nanoplatelets (GNP) is one of the most used elements for the functionalization of fabrics in recent years, providing electrical and thermal conductivity to fabrics, later used to develop products such as sensors or heated garments. This paper reports thermoelectrically conductive textiles fabrication through knife-coating of cellulosic fabrics with a GNP load from 0.4 to 2 wt% within an acrylic coating paste. The fabric doped with the highest GNP content reaches a temperature increase of 100°C in few seconds. Besides, it is found out that the thermographic images obtained during the electrical voltage application provide maps of irregularities in the dispersion of conductive particles of the coating and defects produced throughout their useful life. Therefore, the application of a low voltage on the coated fabrics allows fast and effective heating by Joule’s effect, whose thermographic images, in turn, can be used as structural maps to check the quality of the GNP doped coating. The temperature values and the heating rate obtained make these fabrics suitable for heating devices, anti-ice and de-ice systems, and protective equipment, which would be of great interest for industrial applications.


RSC Advances ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 588-594
Author(s):  
Oratai Jongprateep ◽  
Chitlada Mani-lata ◽  
Yosita Sakunrak ◽  
Krittanant Audcharuk ◽  
Tithametha Narapong ◽  
...  

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.


2021 ◽  
Author(s):  
Yali Zhang ◽  
Zhong Zhao ◽  
Daiqi Li ◽  
Guangming Cai ◽  
Xiaoning Tang ◽  
...  

Abstract Degradation of formaldehyde (HCHO) in interior decoration has been an urgent issue due to its toxicity nature and potential threats to human health. In this work, manganese dioxide nanoparticles (MnO2 NPs) were in situ grown on the polydopamine (pDA)-templated cotton fabrics for environmentally friendly HCHO degradation applications. The morphology, elemental composition, and crystal structure of the cotton/pDA/MnO2 were characterized by scanning electron microscopy-energy dispersive X-ray spectrum (SEM-EDX), Fourier transform infrared (FT-IR), X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS), respectively. The degradation of HCHO by the as-developed cotton/pDA/MnO2 was measured in a self-made quartz reactor, and the stability of adsorption was evaluated by cyclic experiments. The results showed that the HCHO removal efficiency reached to 100% within 20 min after three cycles, suggesting that the as-prepared fabrics exhibited good stability for the degradation of HCHO. The development of MnO2 NPs coated fabrics provides new strategies in degradation HCHO in interior decoration.


Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1533
Author(s):  
Abdallah Amedlous ◽  
Mohammed Majdoub ◽  
Zakaria Anfar ◽  
Elhassan Amaterz

Herein, we report the design of a cost-effective catalyst with excellent recyclability, simple recuperation and facile recovery, and the examination between the reaction cycles via the development of self-supporting g-C3N4 nanosheets/Ag NPs polyester fabric (PES) using a simple, facile and efficient approach. PES fabrics were coated via a sono-coating method with carbon nitride nanosheets (GCNN) along with an in situ setting of Ag nanoparticles on PES coated GCNN surface producing PES-GCNN/Ag0. The elaborated textile-based materials were fully characterized using FTIR, 13C NMR, XRD, TGA, SEM, EDX, etc. Catalytic performance of the designed “Dip-Catalyst” demonstrated that the as-prepared PES-GCCN/Ag0 has effectively catalyzed the hydrogenation of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in the presence of NaBH4. The 3 × 3 cm2 PES-GCNN/Ag0 showed the best catalytic activity, displaying an apparent rate constant (Kapp) equal to 0.43 min−1 and more than 10 reusability cycles, suggesting that the prepared catalyst-based PES fabric can be a strong nominee for sustainable chemical catalysis. Moreover, the coated fabrics exhibited appreciable antibacterial capacity against Staphylococcus epidermidis (S. epidermidis) and Escherichia coli (E. coli). The present study opens up new opportunities for the future design of a low cost and large-scale process of functional fabrics.


2021 ◽  
Vol 27 (4) ◽  
pp. 470-476
Author(s):  
Gizem MANASOGLU ◽  
Rumeysa CELEN ◽  
Mine AKGUN ◽  
Mehmet KANIK

In this article, the surface roughness and friction coefficient values of graphene coated fabrics were examined. Fabrics were coated with three different graphene concentrations (5 %, 10 % and 20 %) with the knife-over-roll principle. The surface roughness of samples was measured by Accretech Surfcom 130A. Various surface roughness parameters of the coated fabrics were evaluated. Static and kinetic friction coefficients of coated fabrics were measured by Labthink Param MXD-02 friction tester using the standard wool abrasive cloth. It was observed that the coating concentration affected the frictional and roughness properties of fabrics. Experimental results showed that fabric surface roughness and friction coefficient values decreased significantly, especially at 20 % concentration. It was concluded that the coated fabrics produced could be used in applications such as anti-wear clothing.


Author(s):  
Lubna Abdulazeem ◽  
Yusor Fadhil Alasadi ◽  
Yasir Haider Al-Mawlah ◽  
Ameer M. Hadi

Silver nanoparticles vary in size from 1 to 100 nm. These have unique properties that assists in molecular diagnostics, therapies, and devices used in many medical procedures. The most popular methods for making silver nanoparticles are physical and chemical approaches. Chemical and physical methods are troublesome because synthesis is expensive. The biological approach is a feasible alternative one. The major biological processes involved are bacteria, fungi, and plant extracts. Silver nanoparticles are mainly used in diagnostic and therapeutic applications in medicine. Their medical uses rely on the antimicrobial property, while the anti-inflammatory property has its own range of applications. Silver nanoparticles are used in a number of medical therapies and instruments, as well as in a variety of biological sciences. This article focuses on chemical and biological techniques for synthesizing AgNPs, which will subsequently be utilized to coat socks materials, testing antimicrobial activity and comparing the ability of these coated fabrics to minimize infections.


Author(s):  
Jing Li ◽  
Yanan Zhu ◽  
Mingqiao Ge

Abstract In recent years, luminous coated fabrics based on SrAl2O4: Eu2+, Dy3+ luminescent materials have attracted more attention. However, due to the single emission color of SrAl2O4: Eu2+, Dy3+ luminescent materials, the application of prepared coated fabrics has certain liminations. Therefore, at present, there is a need to develop a kind of luminous coated fabric which has the capability of emitting multiple colors of light. In this work, fluorescent pigments and SrAl2O4: Eu2+, Dy3+ luminescent materials were added to a coating slurry and uniformly coated over a woven fabric substrate. The effects of adding fluorescent pigments on the spectral characteristics of luminous coated fabrics were evaluated. The blue fluorescent pigment causes a significant blue shift in the emission spectrum of the blue light-emitting coated fabric, whereas the emission spectra of the orange and red light-emitting coated fabrics exhibit a significant red shift. The yellow-green fluorescent pigments significantly affect the coated fabric. The emission spectrum shows no evident change and is similar to the emission spectrum of white (without any fluorescent pigment) luminescent coated fabric. The afterglow brightness of the colored luminous coated fabrics decreases exponentially with time. Adding blue fluorescent pigments has a greater impact on the brightness of the coated fabrics. The initial brightness is lower and the afterglow brightness loss is higher when using yellow-green fluorescence. The pigment has little effect on the brightness loss of coated fabrics, and the initial brightness of the coated fabric increases when adding yellow-green fluorescent pigments. Fluorescent pigments result in relatively low color purity for each colored coated fabric. However, the color rendering index is high, and the color rendering performance for the light source is excellent.


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