Surface Modification of Bamboo Charcoal by O<sub>2</sub> Plasma Treatment and UV-Grafted Thermo-Sensitive AgNPs Hydrogel to Improve Antibacterial Properties in Biomedical Application
With the advancement of science and modern medical technology, more and more medical materials and implants are used in medical treatment and to improve human life. The safety of invasive medical materials and the prevention of infection are gradually being valued. Therefore, avoiding operation fail...
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| Format: | Article |
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MDPI AG
2021-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/10/2697 |
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| author | Shih-Ju Liu Shu-Chuan Liao |
| author_facet | Shih-Ju Liu Shu-Chuan Liao |
| author_sort | Shih-Ju Liu |
| collection | DOAJ |
| description | With the advancement of science and modern medical technology, more and more medical materials and implants are used in medical treatment and to improve human life. The safety of invasive medical materials and the prevention of infection are gradually being valued. Therefore, avoiding operation failure or wound infection and inflammation caused by surgical infection is one of the most important topics in current medical technology. Silver nanoparticles (AgNPs) have minor irritation and toxicity to cells and have a broad-spectrum antibacterial effect without causing bacterial resistance and other problems. They are also less toxic to the human body. Bamboo charcoal (BC) is a bioinert material with a porous structure, light characteristics, and low density, like bone quality. It can be used as a lightweight bone filling material. However, it does not have any antibacterial function. This study synthesized AgNPs under the ultraviolet (UV) photochemical method by reducing silver nitrate with sodium citrate. The formation and distribution of AgNPs were confirmed by UV-visible spectroscopy and X-ray diffraction measurement (XRD). The BC was treated by O<sub>2</sub> plasma to increase the number of polar functional groups on the surface. Then, UV light-induced graft polymerization of N-isopropyl acrylamide (NIPAAm) and AgNPs were applied onto the BC to immobilize thermos-/antibacterial composite hydrogels on the BC surface. The structures and properties of thermos-/antibacterial composite hydrogel-modified BC surface were characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared spectrum (FT-IR), and X-ray photoelectron spectroscopy (XPS). The results show that thermos-/antibacterial composite hydrogels were then successfully grafted onto BC. SEM observations showed that the thermos-/antibacterial composite hydrogels formed a membrane structure between the BC. The biocompatibility of the substrate was evaluated by Alamar Blue cell viability assay and antibacterial test in vitro. |
| first_indexed | 2024-03-10T06:19:37Z |
| format | Article |
| id | doaj.art-e34dd316bad144c5949a735a9f64b358 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T06:19:37Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-e34dd316bad144c5949a735a9f64b3582023-11-22T19:25:15ZengMDPI AGNanomaterials2079-49912021-10-011110269710.3390/nano11102697Surface Modification of Bamboo Charcoal by O<sub>2</sub> Plasma Treatment and UV-Grafted Thermo-Sensitive AgNPs Hydrogel to Improve Antibacterial Properties in Biomedical ApplicationShih-Ju Liu0Shu-Chuan Liao1Design and Materials for Medical Equipment and Devices, Da-Yeh University Changhua, Changhua 515006, TaiwanDepartment of Biomedical Engineering, Da-Yeh University Changhua, Changhua 515006, TaiwanWith the advancement of science and modern medical technology, more and more medical materials and implants are used in medical treatment and to improve human life. The safety of invasive medical materials and the prevention of infection are gradually being valued. Therefore, avoiding operation failure or wound infection and inflammation caused by surgical infection is one of the most important topics in current medical technology. Silver nanoparticles (AgNPs) have minor irritation and toxicity to cells and have a broad-spectrum antibacterial effect without causing bacterial resistance and other problems. They are also less toxic to the human body. Bamboo charcoal (BC) is a bioinert material with a porous structure, light characteristics, and low density, like bone quality. It can be used as a lightweight bone filling material. However, it does not have any antibacterial function. This study synthesized AgNPs under the ultraviolet (UV) photochemical method by reducing silver nitrate with sodium citrate. The formation and distribution of AgNPs were confirmed by UV-visible spectroscopy and X-ray diffraction measurement (XRD). The BC was treated by O<sub>2</sub> plasma to increase the number of polar functional groups on the surface. Then, UV light-induced graft polymerization of N-isopropyl acrylamide (NIPAAm) and AgNPs were applied onto the BC to immobilize thermos-/antibacterial composite hydrogels on the BC surface. The structures and properties of thermos-/antibacterial composite hydrogel-modified BC surface were characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared spectrum (FT-IR), and X-ray photoelectron spectroscopy (XPS). The results show that thermos-/antibacterial composite hydrogels were then successfully grafted onto BC. SEM observations showed that the thermos-/antibacterial composite hydrogels formed a membrane structure between the BC. The biocompatibility of the substrate was evaluated by Alamar Blue cell viability assay and antibacterial test in vitro.https://www.mdpi.com/2079-4991/11/10/2697bamboo charcoalO<sub>2</sub> plasma treatmentthermo-sensitive AgNPs hydrogelsantibacterial |
| spellingShingle | Shih-Ju Liu Shu-Chuan Liao Surface Modification of Bamboo Charcoal by O<sub>2</sub> Plasma Treatment and UV-Grafted Thermo-Sensitive AgNPs Hydrogel to Improve Antibacterial Properties in Biomedical Application Nanomaterials bamboo charcoal O<sub>2</sub> plasma treatment thermo-sensitive AgNPs hydrogels antibacterial |
| title | Surface Modification of Bamboo Charcoal by O<sub>2</sub> Plasma Treatment and UV-Grafted Thermo-Sensitive AgNPs Hydrogel to Improve Antibacterial Properties in Biomedical Application |
| title_full | Surface Modification of Bamboo Charcoal by O<sub>2</sub> Plasma Treatment and UV-Grafted Thermo-Sensitive AgNPs Hydrogel to Improve Antibacterial Properties in Biomedical Application |
| title_fullStr | Surface Modification of Bamboo Charcoal by O<sub>2</sub> Plasma Treatment and UV-Grafted Thermo-Sensitive AgNPs Hydrogel to Improve Antibacterial Properties in Biomedical Application |
| title_full_unstemmed | Surface Modification of Bamboo Charcoal by O<sub>2</sub> Plasma Treatment and UV-Grafted Thermo-Sensitive AgNPs Hydrogel to Improve Antibacterial Properties in Biomedical Application |
| title_short | Surface Modification of Bamboo Charcoal by O<sub>2</sub> Plasma Treatment and UV-Grafted Thermo-Sensitive AgNPs Hydrogel to Improve Antibacterial Properties in Biomedical Application |
| title_sort | surface modification of bamboo charcoal by o sub 2 sub plasma treatment and uv grafted thermo sensitive agnps hydrogel to improve antibacterial properties in biomedical application |
| topic | bamboo charcoal O<sub>2</sub> plasma treatment thermo-sensitive AgNPs hydrogels antibacterial |
| url | https://www.mdpi.com/2079-4991/11/10/2697 |
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