scholarly journals Low-Temperature Plasma Modification of Styrene–Butadiene Block Copolymer Surfaces for Improved Adhesion—A Kinetic Approach

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 935 ◽  
Author(s):  
Jacek Tyczkowski ◽  
Hanna Kierzkowska-Pawlak ◽  
Jan Sielski ◽  
Iwona Krawczyk-Kłys
Keyword(s):  
Block Copolymer ◽  
Low Temperature ◽  
Plasma Treatment ◽  
Treatment Time ◽  
Peel Strength ◽  
Cross Linking ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Plasma Treatment Time ◽  
Styrene Butadiene

This paper proposed a kinetic model that can describe the changes in the adhesion properties of styrene–butadiene (SBS) block copolymer surfaces under the influence of low-temperature plasma treatment. As a measure of these changes, the peel strength of joints formed between the copolymer surface and the polyurethane adhesive was chosen. Five types of low-temperature low-pressure RF plasma, two inert plasmas (Ar and He), and three reactive plasmas (O2, CO2, and CCl4) were tested. It was found that for all these types of plasma, the peel strength with the plasma treatment time first increases rapidly reaching a maximum value, and then there is a visible decrease in peel strength, after which the peel strength increases again. This dependence of the peel strength on the plasma treatment time is very well described by the proposed model, which considers three processes: (1) the generation of radical states followed by the creation of functional groups involved in the adhesive bonding process, (2) the surface cross-linking that decreases the concentration of these functional groups, and (3) the formation of nano-roughness. The model analysis revealed differences between the action of reactive and inert plasmas in the SBS surface cross-linking mechanism and preferential etching process, as well as differences in the generation of radical states between the O2 plasma (electron process) and other plasmas tested (ionic processes).

Preparation of Super Absorbent Polymer by Carboxymethyl Cellulose Grafting Acrylic Acid Using Low-Temperature Plasma Treatment

2011 ◽  
Vol 239-242 ◽  
pp. 2578-2583
Author(s):  
Li Jie Huang ◽  
Ting Xu ◽  
Hong Tao Wang ◽  
Shuang Fei Wang
Keyword(s):  
Acrylic Acid ◽  
Plasma Treatment ◽  
Treatment Time ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Super Absorbent Polymer ◽  
Grafting Reaction ◽  
Vacuum Degree ◽  
Plasma Treatment Time ◽  
Absorbent Polymer

Carboxymethyl cellulose (CMC) made from bagasse pulp was treated by low-temperature plasma, then reacted grafting polymerization with acrylic acid (AA) to produce super absorbent polymer. The effects of discharge power, plasma treatment time, initiator dosage, acrylic acid dosage, vacuum degree and neutralization ratio on water absorbency and grafting reaction time of the products were studied by single factor experiments. The best process parameters: discharge power = 250 W; plasma treatment time = 90s; m (K2S2O8) : m (CMC) (W/W) = 7:20; m (AA) : m (CMC) (W/W) = (1:9) ~ (1:8); vacuum degree = 300 Pa; neutralization degree = 40%, in which the distilled water absorbency of the product reached its maximum of 509 g/g and the grafting reaction time approached its minimum of 2min. This process has the advantages of simple operation, easy control, high grafting efficiency, short production cycle, low cost and so on, which meet the industrial production requirements of super absorbent polymer.

The effects of surface modification using O2 low temperature plasma on chrome tanning properties of natural leather

2018 ◽  
Vol 49 (4) ◽  
pp. 534-547 ◽  
Author(s):  
Yuanping Jiang ◽  
Jiaxun Li ◽  
Fangming Liu ◽  
Zongcai Zhang ◽  
Zhengjun Li ◽  
...  
Keyword(s):  
Surface Modification ◽  
Low Temperature ◽  
Plasma Treatment ◽  
High Efficiency ◽  
Treatment Time ◽  
Chemical Compositions ◽  
Low Temperature Plasma ◽  
Plasma Technology ◽  
Temperature Plasma ◽  
Chrome Tanning

Low temperature plasma technology has the characteristics of economy, pollution-free and high efficiency. The pioneering works were carried out by applying low temperature plasma to surface modification of natural leather and chrome tanning process, to reduce water pollution. The effects of oxygen low temperature plasma treatment on the micro-structure, chemical compositions and active groups of leather fiber were studied in this paper. The optimal low temperature plasma treatment time was 10 min, which had the maximal chrome exhausting value. The SEM results showed that the leather surface was etched rougher with time increasing. The contact angle measurements showed that the hydrophilic property of leather surface increased after low temperature plasma process. The XPS data showed that the O1s area ratios increased from 19.49% to 26.45%, the content of COOH roughly tripled after O2 low temperature plasma treatment for 10 min, and the surface chrome content increased from 1.09% to 1.31% after chrome tanning. Based on the above results, low temperature plasma technology may provide a new exploring method for high-exhaustion chrome tanning technology.

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.

Surface Properties of UHMWPE Fiber after Low Temperature Argon-Plasma Treatment

2012 ◽  
Vol 499 ◽  
pp. 90-94 ◽  
Author(s):  
Jin Yun Xu ◽  
Wen Yu Wang ◽  
Xin Jin
Keyword(s):  
Molecular Weight ◽  
Low Temperature ◽  
Plasma Treatment ◽  
Treatment Time ◽  
Argon Plasma ◽  
Uhmwpe Fiber ◽  
Wetting Ability ◽  
Plasma Treatment Time ◽  
Uhmwpe Fibers ◽  
Ultra High Molecular Weight

To improve the adhesion between ultra-high-molecular-weight polyethylene (UHMWPE) fibers and matrix, the UHMWPE fibers were treated by low temperature argon-plasma. The effects of argon-plasma treatment on the properties of UHMWPE have been investigated. The roughness and wetting ability were all found to increase significantly after modifications. The tensile strength of UHMWE fibers were decreased with the plasma treatment time. The optimum plasma treatment is 2min.The increasing of roughness and wetting ability of UHMWPE fiber are beneficial to the improvement the adhesion between UHMWPE fiber and matrix.

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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