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采用改进的直流脉冲溅射法在聚丙烯非织造织物上形成的氮化碳（CN）层的抗菌效果。

Antibacterial Effects of a Carbon Nitride (CN) Layer Formed on Non-Woven Polypropylene Fabrics Using the Modified DC-Pulsed Sputtering Method.

作者信息

Sohn Young-Soo, Jung Sang Kooun, Lee Sung-Youp, Kim Hong Tak

机构信息

Department of Biomedical Engineering, Daegu Catholic University, Gyeongsan 38439, Republic of Korea.

Econet Korea Ltd., Gumi 39373, Republic of Korea.

出版信息

Polymers (Basel). 2023 Jun 10;15(12):2641. doi: 10.3390/polym15122641.

DOI:10.3390/polym15122641
PMID:37376286
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10301604/
Abstract

In the present study, the surface of non-woven polypropylene (NW-PP) fabric was modified to form CN layers using a modified DC-pulsed (frequency: 60 kHz, pulse shape: square) sputtering with a roll-to-roll system. After plasma modification, structural damage in the NW-PP fabric was not observed, and the C-C/C-H bonds on the surface of the NW-PP fabric converted into C-C/C-H, C-N(CN), and C=O bonds. The CN-formed NW-PP fabrics showed strong hydrophobicity for HO (polar liquid) and full-wetting characteristics for CHI (non-polar liquid). In addition, the CN-formed NW-PP exhibited an enhanced antibacterial characteristic compared to NW-PP fabric. The reduction rate of the CN-formed NW-PP fabric was 89.0% and 91.6% for (ATCC 6538, Gram-positive) and (ATCC4352, Gram-negative), respectively. It was confirmed that the CN layer showed antibacterial characteristics against both Gram-positive and Gram-negative bacteria. The reason for the antibacterial effect of CN-formed NW-PP fabrics can be explained as the strong hydrophobicity due to the CH bond of the fabric, enhanced wetting property due to CN bonds, and antibacterial activity due to C=O bonds. Our study presents a one-step, damage-free, mass-productive, and eco-friendly method that can be applied to most weak substrates, allowing the mass production of antibacterial fabrics.

摘要

在本研究中，使用卷对卷系统通过改进的直流脉冲（频率：60 kHz，脉冲形状：方形）溅射对聚丙烯无纺布（NW-PP）织物表面进行改性以形成CN层。等离子体改性后，未观察到NW-PP织物的结构损伤，并且NW-PP织物表面的C-C/C-H键转化为C-C/C-H、C-N（CN）和C=O键。形成CN的NW-PP织物对HO（极性液体）表现出强疏水性，对CHI（非极性液体）表现出完全润湿特性。此外，与NW-PP织物相比，形成CN的NW-PP表现出增强的抗菌特性。形成CN的NW-PP织物对金黄色葡萄球菌（ATCC 6538，革兰氏阳性）和大肠杆菌（ATCC4352，革兰氏阴性）的减少率分别为89.0%和91.6%。证实CN层对革兰氏阳性和革兰氏阴性细菌均表现出抗菌特性。形成CN的NW-PP织物抗菌效果的原因可以解释为织物的CH键导致的强疏水性、CN键导致的增强的润湿性以及C=O键导致的抗菌活性。我们的研究提出了一种一步法、无损伤、大规模生产且环保的方法，该方法可应用于大多数脆弱基材，从而实现抗菌织物的大规模生产。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/5c1e5e0b666d/polymers-15-02641-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/49f77f1c97af/polymers-15-02641-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/080b6350b744/polymers-15-02641-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/d6f6b18a1c14/polymers-15-02641-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/c20d0ac2bce1/polymers-15-02641-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/cd8aded256a9/polymers-15-02641-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/5c1e5e0b666d/polymers-15-02641-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/49f77f1c97af/polymers-15-02641-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/080b6350b744/polymers-15-02641-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/d6f6b18a1c14/polymers-15-02641-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/c20d0ac2bce1/polymers-15-02641-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/cd8aded256a9/polymers-15-02641-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08de/10301604/5c1e5e0b666d/polymers-15-02641-g006.jpg

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