{"title":"Micropatterned CuS@PDMS films with anti-adhesive property for photothermal sterilization","authors":"","doi":"10.1016/j.porgcoat.2024.108909","DOIUrl":null,"url":null,"abstract":"<div><div>This study presents the development of micropatterned polydimethylsiloxane (PDMS) films with hollow CuS NPs (p-CuS@PDMS) designed for both anti-adhesive and photothermal sterilization applications. Hollow CuS nanoparticles (NPs) synthesized via the Kirkendall effect were incorporated into PDMS films to enhance the photothermal conversion. Micropatterning, achieved through a yogurt lid templating method, increased surface roughness and hydrophobicity and significantly reduced bacterial adhesion. The improved anti-adhesive properties were demonstrated by water contact angle measurements, which showed an increase of 24° from 103° to 127° for the micropatterned p-CuS@PDMS films. Under near-infrared (NIR) irradiation, the p-CuS@PDMS films achieved a temperature increase of 91 °C with a photothermal conversion efficiency of 73 %, which is much higher than the 61 °C achieved by plain PDMS. The presence of CuS NPs in the PDMS matrix improved the bacterial inactivation rates, with p-CuS@PDMS achieving a 99 % bacterial kill rate after 90 s of irradiation. Although the anti-adhesive properties were influenced more by micropatterning, the combination of CuS and micropatterning provided a synergistic effect. These results demonstrate the potential of p-CuS@PDMS films for applications in healthcare and packaging, where effective sterilization and bacterial resistance are critical.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5000,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Progress in Organic Coatings","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S030094402400701X","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
This study presents the development of micropatterned polydimethylsiloxane (PDMS) films with hollow CuS NPs (p-CuS@PDMS) designed for both anti-adhesive and photothermal sterilization applications. Hollow CuS nanoparticles (NPs) synthesized via the Kirkendall effect were incorporated into PDMS films to enhance the photothermal conversion. Micropatterning, achieved through a yogurt lid templating method, increased surface roughness and hydrophobicity and significantly reduced bacterial adhesion. The improved anti-adhesive properties were demonstrated by water contact angle measurements, which showed an increase of 24° from 103° to 127° for the micropatterned p-CuS@PDMS films. Under near-infrared (NIR) irradiation, the p-CuS@PDMS films achieved a temperature increase of 91 °C with a photothermal conversion efficiency of 73 %, which is much higher than the 61 °C achieved by plain PDMS. The presence of CuS NPs in the PDMS matrix improved the bacterial inactivation rates, with p-CuS@PDMS achieving a 99 % bacterial kill rate after 90 s of irradiation. Although the anti-adhesive properties were influenced more by micropatterning, the combination of CuS and micropatterning provided a synergistic effect. These results demonstrate the potential of p-CuS@PDMS films for applications in healthcare and packaging, where effective sterilization and bacterial resistance are critical.
期刊介绍:
The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as:
• Chemical, physical and technological properties of organic coatings and related materials
• Problems and methods of preparation, manufacture and application of these materials
• Performance, testing and analysis.