Study on Surface Properties of Polyamide 66 Using Atmospheric Glow-Like Discharge Plasma Treatment

Abstract

Surface modification of fiber fabric sometimes needs a large volume of cold plasma to improve its efficiency. This experimental study is based on the treatment of polyamide 66 (PA66) fabrics using large contact-area glow-like plasma, which are produced in the atmospheric air without any dielectric barriers. The atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) are adopted, respectively, to detect the surface changes in physical microstructure and the variations in the type and quantity of chemical functional groups. The results show that the PA66 fabric surface will be etched remarkably by the glow-like plasma, and the surface roughness and the surface energy are augmented. On the surface of the processed PA66 fabrics, the oxygen-containing functional groups' content rises together with the decrease on the total primary C-C and C-N bonds. After 30 seconds of sterilization by the glow-like plasmas, most of the bacterial colonies on the fabric vanish. The effectiveness of this kind of plasma treatment could last for three days in a sealed environment.

Atmospheric Pressure Plasma Polymerization Synthesis and Characterization of Polyaniline Films Doped with and without Iodine

“…For a further analysis of the types and ratios of the surface functional groups in the pure and I 2 -doped PANI, the curve fitting of the high-resolution C 1s and N 1s peaks was analyzed using the XPS peaks. As shown in Figure 6 b, the C 1s peaks for the pure and I 2 -doped PANI could be divided into six component peaks, indicating the following six carbon-containing groups; C=C (284.0 eV), C–C/C–H (285.6 eV), C–N (286.5 eV), C–O (288.1 eV), C=O (289.4 eV), and O–C=O (291.1 eV) [ 5 , 26 , 27 ]. Meanwhile, the N 1s spectra under different conditions are shown in Figure 6 c. In this case, the N 1s peaks for the pure and I 2 -doped PANI could be divided into three component peaks, indicating the following three nitrogen-containing groups; =N– (398.3 eV), –NH– (399.8 eV), and =NH + (402.1 eV) [ 27 , 36 , 37 ].…”

“…Use of such system, however, is costly and requires routine maintenance, thereby limiting its application to batch processes. Therefore, an attractive alternative is the use of atmospheric pressure plasma (APP) polymerization for the synthesis of novel thin film materials [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. With various advantages, including a low-temperature dry process and low-cost routine maintenance, APP polymerization is a promising growth system for the deposition of novel plasma polymer thin films with functional features that are well-suited for a wide range of applications and substrates.…”

Superficial Surface Treatment using Atmospheric Plasma on Recycled Nylon 6,6

“…Additionally, atmospheric discharge plasma has proven to be an effective alternative to conventional techniques for surface modification [17]. It can modify surfaces uniformly by forming oxygenated chemical groups on the surface, allowing for higher surface chemical reactivity [18][19][20].…”

Surface Modification of Polyamides by Gaseous Plasma—Review and Scientific Challenges

“…A 1-min plasma treatment resulted in 18 at% O and 9 at% N in the surface film of PA66 as probed by XPS. The same group published the same results on the surface characterization of PA66 in [ 32 ] and added a detailed study on the disinfection efficiency using Escherichia coli HT115 as model microorganisms.…”