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 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).

scholarly journals Surface Modification Effect and Mechanical Property of para-aramid Fiber by Low-temperature Plasma Treatment

2015 ◽  
Vol 27 (1) ◽  
pp. 18-26
Author(s):  
Sung-Min Park ◽  
Hyun-Sik Son ◽  
Ji-Hyun Sim ◽  
Joo-Young Kim ◽  
Taekyeong Kim ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Surface Modification ◽  
Low Temperature ◽  
Plasma Treatment ◽  
Aramid Fiber ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Modification Effect

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.

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