Influence of the Combined Treatment of Causticization and Low Temperature Plasma on the Properties of Polyester Fiber

2011 ◽  
Vol 175-176 ◽  
pp. 312-317 ◽  
Author(s):  
Yu Ren ◽  
Jia Deng ◽  
Zhi Hong Li
Keyword(s):  
Low Temperature ◽  
Plasma Treatment ◽  
Photoelectron Spectroscopy ◽  
Combined Treatment ◽  
Polyester Fiber ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Dyeing Properties ◽  
Wetting Properties ◽  
Polyester Fibers

In this paper, the polyester fiber surfaces were modified with the combined method of causticization and low-temperature plasma. The effect of Alkali pre-treatment on plasma treatment was studied to investigate the influence of the combined treatment on the properties of the polyester fibers. Through changing the process parameters, such as the temperature of causticization and the plasma treatment duration, the changes of weight loss, mechanical properties, wetting properties and dyeing properties of the polyester fibers after the causticization-plasma treatment were analyzed. In addition, the change of the surface morphology and chemical composition of the polyester fibers after the treatment was investigated by scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS) analysis respectively. The results showed that the wetting and dyeing properties of the polyester fibers were improved in a higher degree after causticization-plasma treatment than the causticization and plasma treatment independently. Meanwhile, the wetting and dyeing properties were improved more significantly with the increase of the causticization temperature in the causticization-plasma treatment. It was concluded that the pretreatment of the causticization before the low temperature plasma treatment can accelerate the etching and oxidization towards the polyester surface during the plasma treatment.

Effect of radical on defect and molecular structure of monolayer MoS2 by low temperature plasma treatment

2022 ◽  
Author(s):  
Shuya ASADA ◽  
Akihisa OGINO
Keyword(s):  
Molecular Structure ◽  
Low Temperature ◽  
Plasma Treatment ◽  
Photoelectron Spectroscopy ◽  
Microwave Plasma ◽  
Hydrogen Ions ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
X Ray ◽  
Ar Plasma

Abstract The aim of this study is to form the sulfur defects on monolayer molybdenum disulfide (MoS2) by low temperature microwave plasma treatment suppressing disturbance of molecular structure. CVD-grown and plasma treated multilayer MoS2 surface were analyzed to investigate the effects of H2 and Ar plasma treatment on sulfur defects and molecular structure. It was found that the disturbance of molecular structure was suppressed in the H2 plasma treatment compared to the Ar plasma treatment. Varying the incident ratio of hydrogen ions H+ and radicals H*, the influences of H2 plasma treatment with high and low H*/H+ ratio on monolayer MoS2 structure were discussed. As a result of X-ray photoelectron spectroscopy, Raman spectroscopy and photoluminescence analysis, sulfur defects increased with the increase in total amount of radical incident on MoS2. In addition, it is speculated that the etching with radical contributed to form sulfur defects suppressing the disturbance of molecular structure.

The Influence of Surface Modification on Related Functional Properties of Wool and Hemp

2005 ◽  
Vol 494 ◽  
pp. 283-290 ◽  
Author(s):  
P. Jovančić ◽  
D. Jocić ◽  
M. Radetić ◽  
T. Topalović ◽  
Z.Lj. Petrović
Keyword(s):  
Surface Modification ◽  
Low Temperature ◽  
Plasma Treatment ◽  
Functional Properties ◽  
Dimensional Stability ◽  
Combined Treatment ◽  
Fibre Surface ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Polymer Adhesion

The new concept of the combined treatment consisting of specific fibre surface tailoring and activation prior to biopolymer or enzyme post-application is introduced. Low-temperature plasma treatment is considered as very useful for superficial treatment of wool and hemp. Some interesting combinations of low-temperature plasma and enzymatic treatments are presented in this paper. These treatments result in an increase in wettability, dimensional stability, polymer adhesion and dyeability of both, wool and hemp fabrics.

scholarly journals The surface modification by O2 low temperature plasma to improve dyeing properties of Rex rabbit fibers

2019 ◽  
Vol 14 ◽  
pp. 155892501985402
Author(s):  
Ting Su ◽  
Ying Han ◽  
Hongyan Liu ◽  
Lixin Li ◽  
Zongcai Zhang ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Low Temperature ◽  
Plasma Treatment ◽  
Photoelectron Spectroscopy ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
X Ray ◽  
Rex Rabbit

Dyeability of the fiber plays a very important role in the textile industry. The presence of cuticle scales on the surface of Rex rabbit fibers brings difficulties to dyeing process. In this study, O2 low temperature plasma was used to improve the dyeability of Rex rabbit fibers and the two key parameters including the treating time and discharge power were optimized during O2 low temperature plasma treatment. The impact of plasma treatment on the surface morphology, physical-chemical properties, and dyeing behavior of Rex rabbit fibers using anionic dyes were investigated by a series of characterization methods such as scanning electron microscopy, atomic force microscopy, Fourier transform infrared–attenuated total reflection, and X-ray photoelectron spectroscopy. The surface dyeability and color fastness were studied by K/S measurement and washing fastness, respectively. The influence of O2 low temperature plasma treatment on the mechanical properties of Rex rabbit fibers was inspected by the tensile strength measurement. The wettability of the samples was evaluated in terms of wetting time and contact angle. The O2 low temperature plasma treatment resulted in a dramatic improvement in wettability of Rex rabbit fibers. X-ray photoelectron spectroscopy and Fourier transform infrared–attenuated total reflection analysis show that oxygen plasma treatment led to a significant increase in the content of sulfur oxides and polar groups such as (–C=O, –OH, and –NH2) on the fiber surface and resulted in reinforced wettability, dyeing rate and dyeing fixation of Rex rabbit fibers.

scholarly journals Possibility of Humid Municipal Wastes Hygienisation Using Gliding Arc Plasma Reactor

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 194
Author(s):  
Joanna Pawłat ◽  
Piotr Terebun ◽  
Michał Kwiatkowski ◽  
Katarzyna Wolny-Koładka
Keyword(s):  
Low Temperature ◽  
Plasma Treatment ◽  
Alternative Fuels ◽  
Raw Materials ◽  
Arc Discharge ◽  
Plasma Reactor ◽  
Municipal Waste ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Gliding Arc

Sterilization of municipal waste for a raw material for the production of refuse-derived fuel and to protect surface and ground waters against biological contamination during transfer and storage creates a lot of problems. This paper evaluates the antimicrobial potential of non-equilibrium plasma in relation to the selected groups of microorganisms found in humid waste. The proposed research is to determine whether mixed municipal waste used for the production of alternative fuels can be sterilized effectively using low-temperature plasma generated in a gliding arc discharge reactor in order to prevent water contamination and health risk for working staff. This work assesses whether plasma treatment of raw materials in several process variants effectively eliminates or reduces the number of selected groups of microorganisms living in mixed municipal waste. The presence of vegetative bacteria and endospores, mold fungi, actinobacteria Escherichia coli, and facultative pathogens, i.e., Staphylococcus spp., Salmonella spp., Shigella spp., Enterococcus faecalis and Clostridium perfringens in the tested material was microbiologically analyzed. It was found that the plasma treatment differently contributes to the elimination of various kinds of microorganisms in the analyzed raw materials. The effectiveness of sterilization depended mainly on the time of raw materials contact with low-temperature plasma. The results are very promising and require further research to optimize the proposed hygienization process.

Low Temperature Plasma Treatment of Living Human Cells

2007 ◽  
Vol 4 (S1) ◽  
pp. S465-S469 ◽  
Author(s):  
Stephanie Tümmel ◽  
Nina Mertens ◽  
Jiejun Wang ◽  
Wolfgang Viöl
Keyword(s):  
Low Temperature ◽  
Plasma Treatment ◽  
Human Cells ◽  
Low Temperature Plasma ◽  
Temperature Plasma

Ultra-fast framework stabilization of Ge-rich zeolites by low-temperature plasma treatment

2014 ◽  
Vol 5 (1) ◽  
pp. 68-80 ◽  
Author(s):  
Mohamad El-Roz ◽  
Louwanda Lakiss ◽  
Aurelie Vicente ◽  
Krassimir N. Bozhilov ◽  
Frederic Thibault-Starzyk ◽  
...  
Keyword(s):  
Low Temperature ◽  
Plasma Treatment ◽  
Low Temperature Plasma ◽  
Temperature Plasma
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