Plasma-based treatments of textiles for water repellency

Edwards, Nicholas W. M.; Goswami, Parikshit

doi:10.1016/b978-0-08-101212-3.00008-3

Cited by 6 publications

(3 citation statements)

References 54 publications

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“…To partially expose the nanoparticles embedded in the metal oxide thin film, a low-pressure capacitively coupled plasma (CCP) treatment is a meaningful alternative to chemical etching. Low-pressure plasma treatment is recognised as a versatile, environmental friendly and effective technology for surface modification, cleaning and etching of surfaces at the micro-and nanolevels [174,175].…”

Section: Low-pressure Plasma Treatment For Surface Etchingmentioning

confidence: 99%

Gas Sensors Based on Localized Surface Plasmon Resonances: Synthesis of Oxide Films with Embedded Metal Nanoparticles, Theory and Simulation, and Sensitivity Enhancement Strategies

et al. 2021

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This work presents a comprehensive review on gas sensors based on localized surface plasmon resonance (LSPR) phenomenon, including the theory of LSPR, the synthesis of nanoparticle-embedded oxide thin films, and strategies to enhance the sensitivity of these optical sensors, supported by simulations of the electromagnetic properties. The LSPR phenomenon is known to be responsible for the unique colour effects observed in the ancient Roman Lycurgus Cup and at the windows of the medieval cathedrals. In both cases, the optical effects result from the interaction of the visible light (scattering and absorption) with the conduction band electrons of noble metal nanoparticles (gold, silver, and gold–silver alloys). These nanoparticles are dispersed in a dielectric matrix with a relatively high refractive index in order to push the resonance to the visible spectral range. At the same time, they have to be located at the surface to make LSPR sensitive to changes in the local dielectric environment, the property that is very attractive for sensing applications. Hence, an overview of gas sensors is presented, including electronic-nose systems, followed by a description of the surface plasmons that arise in noble metal thin films and nanoparticles. Afterwards, metal oxides are explored as robust and sensitive materials to host nanoparticles, followed by preparation methods of nanocomposite plasmonic thin films with sustainable techniques. Finally, several optical properties simulation methods are described, and the optical LSPR sensitivity of gold nanoparticles with different shapes, sensing volumes, and surroundings is calculated using the discrete dipole approximation method.

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Section: Low-pressure Plasma Treatment For Surface Etchingmentioning

confidence: 99%

Gas Sensors Based on Localized Surface Plasmon Resonances: Synthesis of Oxide Films with Embedded Metal Nanoparticles, Theory and Simulation, and Sensitivity Enhancement Strategies

et al. 2021

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“…In the area of cultural heritage safeguard, plasma treatments might be recommended to clean and protect various types of artefacts from paper to metallic works of art since they are nondestructive technologies and conducted under low pressure and in atmospheric conditions [52]. Generally, plasma is classified as hot/thermal and cold/nonthermal according to the plasma zone temperature [53]. Plasma cleaning is an easy, inexpensive method requiring simple installations.…”

Section: Plasma Cleaningmentioning

confidence: 99%

Different Cleaning Techniques for Removal of Iron stain from Archaeological Bone Artifacts: A Review

2021

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Archaeological bone artifacts are found in different locations in Egypt, and they represent multiple values that should be preserved from different deterioration factors. Iron contamination is considered one of the most aspects of deterioration for bones extracted from excavation areas. This study aims to make an integrated study for the first time on the formation of iron rust stain on archaeological bones, explain the aspects and mechanism of its deterioration, explain traditional and advanced techniques of cleaning used for stain removal, and presents the analysis and investigations used to explain the deterioration mechanism or evaluate the materials and methods used in this process. The nature and formation of iron stain and its effect on archaeological bone components were explained. The cleaning techniques (mechanical, chemical, laser, and plasma) for removing it were discussed. Some analyses and investigations [such as different types of microscopes, X-ray fluorescence, Atomic absorption, fourier transform infrared (FTIR) spectroscopy, etc.] that can be used in this process were mentioned. The results confirmed that iron is present within sediments can lead to the breakdown of collagen. It can cause an increase in the porosity of bone artifacts. Hydroxyapatite can undergo alterations such as ionic exchange, cationic exchange, and substitution of phosphate with carbonate. All cleaning techniques have many advantages and some disadvantages. The choice of method for cleaning of iron rust stain depends on the condition and size of the bone piece, and on the thickness and nature of the iron stain.

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“…[3] Particularly in the textile industry, there is a significant drive by organizations such as the Zero Discharge of Hazardous Chemicals (ZDHC) towards producing resource efficient processes, completely eradicating the use of harsh chemicals. [4] In addition to being an environmentally friendly process, plasma also has the ability to produce products with a technical advantage, such as antimicrobial surfaces, super hydrophobic surfaces, and flame retardant surfaces. [3,[5][6][7][8][9] Worldwide demand for nylon 6 polymers have been increasing in recent years, due to the desirable properties of the material including high tensile strength, wrinkle and abrasion resistance, and high elasticity.…”

Section: Introductionmentioning

confidence: 99%