Silver–Polymethylhydrosiloxane Nanocomposite Coating on Anodized Aluminum with Superhydrophobic and Antibacterial Properties

Agbe, Henry; Sarkar, Dilip; Chen, X.-Grant; Faucheux, Nathalie; Soucy, Gervais; Bernier, J.

doi:10.1021/acsabm.0c00159

Cited by 19 publications

(27 citation statements)

References 63 publications

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“…Alternatively, to fabricate coatings that are fouling-resistant and bactericidal via release-kill, surface-grafted zwitterionic/nonionic/anionic hydrophilic polymer can be loaded with bactericidal release agents. − Bactericidal agents can also be loaded in polymeric coatings with fouling-release properties (Figure A). Examples include hydrophobic fluorinated polymers loaded with bactericidal agents like povidone-iodine or silver (Ag) NPs, silicone-based elastomer loaded with Ag NPs, and a superhydrophobic polymeric layer loaded with Ag NPs . On the other hand, fouling-release polymers are generally not combined with contact-active polymers because bacteria adhere strongly to the latter via electrostatic interactions and are thus difficult to be “released” by the application of shear force.…”

Section: General Antifouling and Bactericidal Strategiesmentioning

confidence: 99%

Polymer-Based Coatings with Integrated Antifouling and Bactericidal Properties for Targeted Biomedical Applications

Mitra

Kang

Neoh

2021

ACS Appl. Polym. Mater.

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One of the most detrimental consequences of surface colonization by bacteria is healthcare-associated infections (HAIs), which contribute to increased patient mortality and morbidity. Medical devices inserted into the body provide a route for bacterial migration and conducive surfaces for their attachment and proliferation. Antibacterial coatings can potentially minimize bacterial colonization and consequently reduce the occurrence of HAIs. Antibacterial coatings function by either inhibiting the attachment of bacteria (antifouling coatings) or killing bacteria attached to the surface and/or in the vicinity (bactericidal coatings). On an antifouling coating, any bacterium that manages to attach will proliferate, while on bactericidal coatings, the accumulation of dead bacteria and debris provides opportunities for other bacteria to colonize the surface. As such, the integration of antifouling and bactericidal functionalities in a single coating combines the advantages of each, increasing the probability that bacterial colonization can be successfully inhibited. This Review highlights recent developments in dual-functional polymer-based antibacterial coatings for specific biomedical applications. General strategies for endowing surfaces with either antifouling or bactericidal polymeric coatings are first discussed, followed by more detailed descriptions of coatings with integrated antifouling and bactericidal functionalities that target the important biomedical applications: blood-contacting devices, orthopedic implants, wound dressings, ocular devices, urinary catheters, endotracheal tubes, and hospital textiles. The importance of tailoring the coatings to meet the specific constraints and requirements of the intended application beyond the antibacterial functionality is emphasized, and finally, the potential challenges in translating such coatings to clinical application are highlighted.

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Section: General Antifouling and Bactericidal Strategiesmentioning

confidence: 99%

Polymer-Based Coatings with Integrated Antifouling and Bactericidal Properties for Targeted Biomedical Applications

Mitra

Kang

Neoh

2021

ACS Appl. Polym. Mater.

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“…They demonstrated that such antibacterial superhydrophobic coatings could be used to design marine coatings to efficiently prevent or reduce bacterial microorganism adhesion. Agbe et al [ 65 ] fabricated an silver‐polymethylhydrosiloxane (Ag‐PMHS) superhydrophobic nanocomposite coatings, which demonstrated excellent antibacterial properties against clinically relevant planktonic bacteria with zone of influence (ZOI) values of 25.3 ± 0.5, 24.8 ± 0.5, and 23.3 ± 3.6 mm for Pseudomonas aeruginosa ( P. aeruginosa ), Escherichia coli ( E. coli ), and Staphylococcus aureus ( S. aureus ), respectively ( Figure ). And the as‐synthesized coatings also provided excellent antibiofouling properties with bacterial adhesion reductions of 99.0%, 99.5%, and 99.3% for P. aeruginosa , E. coli , and S. aureus , respectively.…”

Section: Metal‐based Antibacterial Superhydrophobic Coatingsmentioning

confidence: 99%

Section: Zno-contained Antibacterial Superhydrophobic Coatingsmentioning

confidence: 99%

Recent Advances in Antibacterial Superhydrophobic Coatings

Zhan

Amirfazli

et al. 2021

Adv Eng Mater

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Microorganisms have existed for hundreds of millions of years and they have adapted to colonize on surfaces. [1] Bacteria are ubiquitous in the human living environment. Most bacteria spread through medical equipments and contacting with each other. [2] All over the world, the diseases caused by bacterial infections have brought terrible catastrophe to human beings. [3][4][5][6][7] Generally, people infected with infectious diseases are directly or indirectly related to contact with pathogenic microorganisms. The main stages of the attachment of bacteria at the interface include the migration of bacteria to the surface, the reversible and irreversible interactions between bacteria and the interface, the specific adsorption of bacteria on the substrate, and the proliferation of bacteria, thus forming a bacterial biofilm on the surface (Figure 1). [8] The bacteria can multiply quickly under suitable conditions, which induce various diseases and cause invalidation of apparatus. The colonization of bacteria on surfaces can result in chronic infections, [9] the failure of medical implants, [10] the biological corrosion of industrial equipments, [11] reducing various surface properties, such as petroleum and other pipelines systems, clothes, and other harmful phenomena. [12] Currently, antibiotics are mainly used to inhibit or kill bacteria to maintain surface hygiene and prevent infections. However, as bacteria develop resistance to antibiotics, it is suggested that antibiotics should be much more cautiously used. It is estimated that antimicrobial resistance infections will kill as many as 10 million people every year by 2050. [13] Antimicrobial resistance is now an urgent international issue that requires imperative solutions, more effective antibacterial techniques are needed to fight bacterial infections. Inspired by the superwetting properties of plants and marine life, Li et al. [14] reviewed the research progresses of the preparation of superwetting materials including of superhydrophobic/superoleophilic and superhydrophilic/underwater superoleophobic materials and their applications for removal of organic pollutants, which provided a basis for the design of a new type of superwetting materials that efficiently remove organic pollutants in the water. Similarly, Tian et al. [15] developed a superwetting thin-film nanofibrous composite membrane with antifouling, self-cleaning, and oil-in-water emulsions separation properties. The as-prepared carbon nanotubes (CNTs) layer with superhydrophilic and underwater superoleophobic properties could absorb water as a selective layer to remove oil droplets from oil-in-water emulsions to present antifouling. The self-cleaning properties were promised by the continuously up-flowed permeate water. They claimed that the work provided a new insight for developing oil/water separation membranes which suffer from fouling and clogging. Also, Li et al. [16] summarized the recent progresses in smart polymeric materials for fabricating switchable superwettability surfaces and their oi...

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“…Now, we know that the length of existence time of the air-bubble layer directly affects the antibiofouling property of the surface. Also, the air-bubble layer is mainly determined by material chemical composition and surface morphological structure of the coating. , Compared with superhydrophobic coating, fluorinated carbon nanotubes superamphiphobic coating with super oil repellency, lower surface free energy, and stable re-entrant micro/nanostructures will be a great choice − because lower surface free energy and stable re-entrant micro/nanostructures can promote the appearance of a better air-bubble layer with fewer defects and further guarantee the chronic existence of the air-bubble layer on the surface. Meanwhile, the existence of long fluorinated chains, which have been proven to reduce the affinity of the surface to proteins and bacteria, , will have a stronger and more durable adverse impact on protein adsorption and bacterial attachment.…”

Section: Introductionmentioning

confidence: 99%

Fluorinated Carbon Nanotube Superamphiphobic Coating for High-Efficiency and Long-Lasting Underwater Antibiofouling Surfaces

Zhang

Liu

et al. 2021

ACS Appl. Bio Mater.

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Biofilm formation on the surface of materials has brought great troubles to various industries. Designing surfaces with long-lasting antibiofouling properties can help restrain primary bacterial and protein attachment and subsequent biofilm formation for a long time, which is also of great significance for industrial applications. In this work, we successfully prepared fluorinated carbon nanotubes through a one-step fluorination method using fluorosilane and fabricated a superamphiphobic coating using a simple spray method. This coating with ultralow surface free energy and stable micro/nano structures achieved highly efficient and long-term underwater antibiofouling properties. Tea, milk, BSA, and bacterial solution can bounce highly on this surface without wetting the surface in air. The long-term existence of the underwater air-bubble layer on the surface of the superamphiphobic coating was observed. Thus, this surface can effectively resist BSA and bacterial attachment (E. coli), and the efficiency, respectively, reaches 97.5 and 98.2%. Even if it is fully soaked in BSA and BS solution for 120 h, the whole surface is still able to repel water, BSA, and BS solution very well. In addition, the coating possessed excellent wear resistance, the CAs of BSA and BS solution just decreased slightly (higher than 158°), and the sliding angles increased slightly (lower than 4°) after 50 tape abrasion cycles. Therefore, this superamphiphobic coating may have promising applications for marine devices, biomedical materials, protective clothing, and chemical shielding.

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Silver–Polymethylhydrosiloxane Nanocomposite Coating on Anodized Aluminum with Superhydrophobic and Antibacterial Properties

Cited by 19 publications

References 63 publications

Polymer-Based Coatings with Integrated Antifouling and Bactericidal Properties for Targeted Biomedical Applications

Polymer-Based Coatings with Integrated Antifouling and Bactericidal Properties for Targeted Biomedical Applications

Recent Advances in Antibacterial Superhydrophobic Coatings

Fluorinated Carbon Nanotube Superamphiphobic Coating for High-Efficiency and Long-Lasting Underwater Antibiofouling Surfaces

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