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Fong C, Andersen MJ, Kunesh E, Leonard E, Durand D, Coombs R, Flores-Mireles AL, Howell C. Effect of free liquid layer quantity on bacteria and protein adhesion to liquid infused polymers. Biointerphases 2024; 19:041003. [PMID: 39136648 PMCID: PMC11324329 DOI: 10.1116/6.0003776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/09/2024] [Accepted: 07/22/2024] [Indexed: 08/16/2024] Open
Abstract
Liquid-infused polymers are recognized for their ability to repel foulants, making them promising for biomedical applications including catheter-associated urinary tract infections (CAUTIs). However, the impact of the quantity of free liquid layer covering the surface on protein and bacterial adhesion is not well understood. Here, we explore how the amount of free silicone liquid layer in infused silicone catheter materials influences the adhesion of bacteria and proteins relevant to CAUTIs. To alter the quantity of the free liquid layer, we either physically removed excess liquid from fully infused catheter materials or partially infused them. We then evaluated the impact on bacterial and host protein adhesion. Physical removal of the free liquid layer from the fully infused samples reduced the height of the liquid layer from 60 μm to below detection limits and silicone liquid loss into the environment by approximately 64% compared to controls, without significantly increasing the deposition of protein fibrinogen or the adhesion of the common uropathogen Enterococcus faecalis. Partially infused samples showed even greater reductions in liquid loss: samples infused to 70%-80% of their maximum capacity exhibited about an 85% decrease in liquid loss compared to fully infused controls. Notably, samples with more than 70% infusion did not show significant increases in fibrinogen or E. faecalis adhesion. These findings suggest that adjusting the levels of the free liquid layer in infused polymers can influence protein and bacterial adhesion on their surfaces. Moreover, removing the free liquid layer can effectively reduce liquid loss from these polymers while maintaining their functionality.
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Affiliation(s)
- ChunKi Fong
- Author to whom correspondence should be addressed:
| | - Marissa Jeme Andersen
- Department of Biological Sciences and Department of Chemistry and Biochemistry, College of Science, Notre Dame University, South Bend, Indiana 46556
| | - Emma Kunesh
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, Orono, Maine 04469
| | - Evan Leonard
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, Orono, Maine 04469
| | - Donovan Durand
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, Orono, Maine 04469
| | - Rachel Coombs
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, Orono, Maine 04469
| | - Ana Lidia Flores-Mireles
- Department of Biological Sciences and Department of Chemistry and Biochemistry, College of Science, Notre Dame University, South Bend, Indiana 46556
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2
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Wu SJ, Zhao X. Bioadhesive Technology Platforms. Chem Rev 2023; 123:14084-14118. [PMID: 37972301 DOI: 10.1021/acs.chemrev.3c00380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Bioadhesives have emerged as transformative and versatile tools in healthcare, offering the ability to attach tissues with ease and minimal damage. These materials present numerous opportunities for tissue repair and biomedical device integration, creating a broad landscape of applications that have captivated clinical and scientific interest alike. However, fully unlocking their potential requires multifaceted design strategies involving optimal adhesion, suitable biological interactions, and efficient signal communication. In this Review, we delve into these pivotal aspects of bioadhesive design, highlight the latest advances in their biomedical applications, and identify potential opportunities that lie ahead for bioadhesives as multifunctional technology platforms.
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Affiliation(s)
- Sarah J Wu
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Xuanhe Zhao
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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3
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Pelizzari M, McHale G, Armstrong S, Zhao H, Ledesma-Aguilar R, Wells GG, Kusumaatmaja H. Droplet Self-Propulsion on Slippery Liquid-Infused Surfaces with Dual-Lubricant Wedge-Shaped Wettability Patterns. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:15676-15689. [PMID: 37874819 PMCID: PMC10634355 DOI: 10.1021/acs.langmuir.3c02205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/02/2023] [Indexed: 10/26/2023]
Abstract
Young's equation is fundamental to the concept of the wettability of a solid surface. It defines the contact angle for a droplet on a solid surface through a local equilibrium at the three-phase contact line. Recently, the concept of a liquid Young's law contact angle has been developed to describe the wettability of slippery liquid-infused porous surfaces (SLIPS) by droplets of an immiscible liquid. In this work, we present a new method to fabricate biphilic SLIP surfaces and show how the wettability of the composite SLIPS can be exploited with a macroscopic wedge-shaped pattern of two distinct lubricant liquids. In particular, we report the development of composite liquid surfaces on silicon substrates based on lithographically patterning a Teflon AF1600 coating and a superhydrophobic coating (Glaco Mirror Coat Zero), where the latter selectively dewets from the former. This creates a patterned base surface with preferential wetting to matched liquids: the fluoropolymer PTFE with a perfluorinated oil Krytox and the hydrophobic silica-based GLACO with olive oil (or other mineral oils or silicone oil). This allows us to successively imbibe our patterned solid substrates with two distinct oils and produce a composite liquid lubricant surface with the oils segregated as thin films into separate domains defined by the patterning. We illustrate that macroscopic wedge-shaped patterned SLIP surfaces enable low-friction droplet self-propulsion. Finally, we formulate an analytical model that captures the dependence of the droplet motion as a function of the wettability of the two liquid lubricant domains and the opening angle of the wedge. This allows us to derive scaling relationships between various physical and geometrical parameters. This work introduces a new approach to creating patterned liquid lubricant surfaces, demonstrates long-distance droplet self-propulsion on such surfaces, and sheds light on the interactions between liquid droplets and liquid surfaces.
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Affiliation(s)
- Michele Pelizzari
- Institute
for Multiscale Thermofluids, School of Engineering, The University of Edinburgh, Edinburgh EH9 3FB, U.K.
| | - Glen McHale
- Institute
for Multiscale Thermofluids, School of Engineering, The University of Edinburgh, Edinburgh EH9 3FB, U.K.
| | - Steven Armstrong
- Institute
for Multiscale Thermofluids, School of Engineering, The University of Edinburgh, Edinburgh EH9 3FB, U.K.
| | - Hongyu Zhao
- Institute
for Multiscale Thermofluids, School of Engineering, The University of Edinburgh, Edinburgh EH9 3FB, U.K.
| | - Rodrigo Ledesma-Aguilar
- Institute
for Multiscale Thermofluids, School of Engineering, The University of Edinburgh, Edinburgh EH9 3FB, U.K.
| | - Gary G. Wells
- Institute
for Multiscale Thermofluids, School of Engineering, The University of Edinburgh, Edinburgh EH9 3FB, U.K.
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4
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Fong C, Andersen MJ, Kunesh E, Leonard E, Durand D, Coombs R, Flores-Mireles AL, Howell C. Removal of Free Liquid Layer from Liquid-Infused Catheters Reduces Silicone Loss into the Environment while Maintaining Adhesion Resistance. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.09.14.23295548. [PMID: 37790393 PMCID: PMC10543054 DOI: 10.1101/2023.09.14.23295548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Silicone urinary catheters infused with silicone liquid offer an effective alternative to antibiotic coatings, reducing microbial adhesion while decreasing bladder colonization and systemic dissemination. However, loss of free silicone liquid from the surface into the host system is undesirable. To reduce the potential for liquid loss, free silicone liquid was removed from the surface of liquid-infused catheters by either removing excess liquid from fully infused samples or by partial infusion. The effect on bacterial and host protein adhesion was then assessed. Removing the free liquid from fully infused samples resulted in a ~64% decrease in liquid loss into the environment compared to controls, with no significant increase in deposition of the host protein fibrinogen or the adhesion of the common uropathogen Enterococcus faecalis. Partially infusing samples decreased liquid loss as total liquid content decreased, with samples infused to 70-80% of their maximum capacity showing a ~85% reduction in liquid loss compared to fully infused controls. Furthermore, samples above 70% infusion showed no significant increase in fibrinogen or E. faecalis adhesion. Together, the results suggest that eliminating free liquid layer, mechanically or through partial infusion, can reduce liquid loss from liquid-infused catheters while preserving functionality.
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Affiliation(s)
- ChunKi Fong
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, ME 04469
- Graduate School of Biomedical Science and Engineering, University of Maine, ME 04469
| | - Marissa Jeme Andersen
- Department of Biological Sciences and Department of Chemistry and Biochemistry, College of Science, Notre Dame University, IN 46556 USA
| | - Emma Kunesh
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, ME 04469
| | - Evan Leonard
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, ME 04469
| | - Donovan Durand
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, ME 04469
| | - Rachel Coombs
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, ME 04469
| | - Ana Lidia Flores-Mireles
- Department of Biological Sciences and Department of Chemistry and Biochemistry, College of Science, Notre Dame University, IN 46556 USA
| | - Caitlin Howell
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, ME 04469
- Graduate School of Biomedical Science and Engineering, University of Maine, ME 04469
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5
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Biroun M, Haworth L, Abdolnezhad H, Khosravi A, Agrawal P, McHale G, Torun H, Semprebon C, Jabbari M, Fu YQ. Impact Dynamics of Non-Newtonian Droplets on Superhydrophobic Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:5793-5802. [PMID: 37041655 PMCID: PMC10134492 DOI: 10.1021/acs.langmuir.3c00043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/23/2023] [Indexed: 06/19/2023]
Abstract
Droplet impact behavior on a solid surface is critical for many industrial applications such as spray coating, food production, printing, and agriculture. For all of these applications, a common challenge is to modify and control the impact regime and contact time of the droplets. This challenge becomes more critical for non-Newtonian liquids with complex rheology. In this research, we explored the impact dynamics of non-Newtonian liquids (by adding different concentrations of Xanthan into water) on superhydrophobic surfaces. Our experimental results show that by increasing the Xanthan concentration in water, the shapes of the bouncing droplet are dramatically altered, e.g., its shape at the separation moment is changed from a conventional vertical jetting into a "mushroom"-like one. As a result, the contact time of the non-Newtonian droplet could be reduced by up to ∼50%. We compare the impact scenarios of Xanthan liquids with those of glycerol solutions having a similar apparent viscosity, and results show that the differences in the elongation viscosity induce different impact dynamics of the droplets. Finally, we show that by increasing the Weber number for all of the liquids, the contact time is reduced, and the maximum spreading radius is increased.
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Affiliation(s)
- Mehdi
H. Biroun
- Department
of Chemical Engineering, University College
London, London WC1E 7JE, U.K.
- Faculty
of Engineering and Environment, University
of Northumbria, Newcastle
upon Tyne NE1 8ST, U.K.
| | - Luke Haworth
- Faculty
of Engineering and Environment, University
of Northumbria, Newcastle
upon Tyne NE1 8ST, U.K.
| | - Hossein Abdolnezhad
- Faculty
of Engineering and Environment, University
of Northumbria, Newcastle
upon Tyne NE1 8ST, U.K.
| | - Arash Khosravi
- School
of Mechanical Engineering, Iran University
of Science and Technology, Tehran 13114-16846, Iran
| | - Prashant Agrawal
- Faculty
of Engineering and Environment, University
of Northumbria, Newcastle
upon Tyne NE1 8ST, U.K.
| | - Glen McHale
- Institute
for Multiscale Thermofluids, School of Engineering, University of Edinburgh, Kings Building, Edinburgh EH9 3FB, U.K.
| | - Hamdi Torun
- Faculty
of Engineering and Environment, University
of Northumbria, Newcastle
upon Tyne NE1 8ST, U.K.
| | - Ciro Semprebon
- Faculty
of Engineering and Environment, University
of Northumbria, Newcastle
upon Tyne NE1 8ST, U.K.
| | - Masoud Jabbari
- School
of Mechanical Engineering, University of
Leeds, Leeds LS2 9JT, U.K.
| | - Yong-Qing Fu
- Faculty
of Engineering and Environment, University
of Northumbria, Newcastle
upon Tyne NE1 8ST, U.K.
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6
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Haworth L, Yang D, Agrawal P, Torun H, Hou X, McHale G, Fu Y. Reduction of ice adhesion on nanostructured and nanoscale slippery surfaces. NANOTECHNOLOGY AND PRECISION ENGINEERING 2023. [DOI: 10.1063/10.0017254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Ice nucleation and accretion on structural surfaces are sources of major safety and operational concerns in many industries including aviation and renewable energy. Common methods for tackling these are active ones such as heating, ultrasound, and chemicals or passive ones such as surface coatings. In this study, we explored the ice adhesion properties of slippery coated substrates by measuring the shear forces required to remove a glaze ice block on the coated substrates. Among the studied nanostructured and nanoscale surfaces [i.e., a superhydrophobic coating, a fluoropolymer coating, and a polydimethylsiloxane (PDMS) chain coating], the slippery omniphobic covalently attached liquid (SOCAL) surface with its flexible polymer brushes and liquid-like structure significantly reduced the ice adhesion on both glass and silicon surfaces. Further studies of the SOCAL coating on roughened substrates also demonstrated its low ice adhesion. The reduction in ice adhesion is attributed to the flexible nature of the brush-like structures of PDMS chains, allowing ice to detach easily.
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Affiliation(s)
- Luke Haworth
- Faculty of Engineering and Environment, University of Northumbria, Newcastle upon Tyne NE1 8ST, United Kingdom
| | - Deyu Yang
- State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials, Northwestern Polytechnical University, Xi’an 710072, China
| | - Prashant Agrawal
- Faculty of Engineering and Environment, University of Northumbria, Newcastle upon Tyne NE1 8ST, United Kingdom
| | - Hamdi Torun
- Faculty of Engineering and Environment, University of Northumbria, Newcastle upon Tyne NE1 8ST, United Kingdom
| | - Xianghui Hou
- State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials, Northwestern Polytechnical University, Xi’an 710072, China
| | - Glen McHale
- Institute for Multiscale Thermofluids, School of Engineering, University of Edinburgh, King’s Buildings, Edinburgh EH9 3FB, United Kingdom
| | - Yongqing Fu
- Faculty of Engineering and Environment, University of Northumbria, Newcastle upon Tyne NE1 8ST, United Kingdom
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7
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Cai Q, Xu J, Lian Z, Yu Z, Yu H, Yang S, Li J. Laser-Induced Slippery Liquid-Infused Surfaces with Anticorrosion and Wear Resistance Properties on Aluminum Alloy Substrates. ACS OMEGA 2022; 7:28160-28172. [PMID: 35990433 PMCID: PMC9386839 DOI: 10.1021/acsomega.2c02360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
Slippery liquid-infused surfaces (SLISs) are developed as a potential alternative to superhydrophobic surfaces (SHSs) to resolve the issues of poor durability in corrosion protection and wear resistance. In this work, we used a simple laser processing technology to prepare a SLIS on the aluminum alloy (7075) surface. The superhydrophobicities of the modified surface and the oil film formed by liquid injection make the corrosive medium difficult to directly contact the surface and thus have a significant effect on corrosion resistance. The water and oil repellent SLIS exhibits durable corrosion resistance and excellent tribological properties compared with the SHS. The anticorrosion and wear resistance performances provided by the composite film have been assessed by multiple methods including the electrochemical test, immersion test, and friction wear test. The results indicate that compared to the bare surface, laser-ablated surface (LAS), and fluoroalkyl silane-modified SHS, the SLIS composite coating has better corrosion resistance and wear resistance, which is of great significance to expand the potential applications of 7075 aluminum alloys. The work provides a research basis for expanding the practical application of SLISs in complex environments.
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8
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Biroun MH, Haworth L, Agrawal P, Orme B, McHale G, Torun H, Rahmati M, Fu Y. Surface Acoustic Waves to Control Droplet Impact onto Superhydrophobic and Slippery Liquid-Infused Porous Surfaces. ACS APPLIED MATERIALS & INTERFACES 2021; 13:46076-46087. [PMID: 34520158 DOI: 10.1021/acsami.1c09217] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Superhydrophobic coatings and slippery liquid-infused porous surfaces (SLIPS) have shown their potentials in self-cleaning, anti-icing, anti-erosion, and antibiofouling applications. Various studies have been done on controlling the droplet impact on such surfaces using passive methods such as modifying the lubricant layer thickness in SLIPS. Despite their effectiveness, passive methods lack on-demand control over the impact dynamics of droplets. This paper introduces a new method to actively control the droplet impact onto superhydrophobic and SLIPS surfaces using surface acoustic waves (SAWs). In this study, we designed and fabricated SLIPS on ZnO/aluminum thin-film SAW devices and investigated different scenarios of droplet impact on the surfaces compared to those on similar superhydrophobic-coated surfaces. Our results showed that SAWs have insignificant influences on the impact dynamics of a porous and superhydrophobic surface without an infused oil layer. However, after infusion with oil, SAW energy could be effectively transferred to the droplet, thus modifying its impact dynamics onto the superhydrophobic surface. Results showed that by applying SAWs, the spreading and retraction behaviors of the droplets are altered on the SLIPS surface, leading to a change in a droplet impact regime from deposition to complete rebound with altered rebounding angles. Moreover, the contact time was reduced up to 30% when applying SAWs on surfaces with an optimum oil lubricant thickness of ∼8 μm. Our work offers an effective way of applying SAW technology along with SLIPS to effectively reduce the contact time and alter the droplet rebound angles.
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Affiliation(s)
- Mehdi H Biroun
- Faculty of Engineering and Environment, University of Northumbria, Newcastle upon Tyne NE1 8ST, U.K
- Department of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
| | - Luke Haworth
- Faculty of Engineering and Environment, University of Northumbria, Newcastle upon Tyne NE1 8ST, U.K
| | - Prashant Agrawal
- Faculty of Engineering and Environment, University of Northumbria, Newcastle upon Tyne NE1 8ST, U.K
| | - Bethany Orme
- Faculty of Engineering and Environment, University of Northumbria, Newcastle upon Tyne NE1 8ST, U.K
| | - Glen McHale
- Institute for Multiscale Thermofluids, School of Engineering, University of Edinburgh, Kings Buildings, Edinburgh EH9 3FB, U.K
| | - Hamdi Torun
- Faculty of Engineering and Environment, University of Northumbria, Newcastle upon Tyne NE1 8ST, U.K
| | - Mohammad Rahmati
- Faculty of Engineering and Environment, University of Northumbria, Newcastle upon Tyne NE1 8ST, U.K
| | - YongQing Fu
- Faculty of Engineering and Environment, University of Northumbria, Newcastle upon Tyne NE1 8ST, U.K
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9
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Françolle de Almeida C, Saget M, Delaplace G, Jimenez M, Fierro V, Celzard A. Innovative fouling-resistant materials for industrial heat exchangers: a review. REV CHEM ENG 2021. [DOI: 10.1515/revce-2020-0094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Fouling of heat exchangers (HEs) has become a major concern across the industrial sector. Fouling is an omnipresent phenomenon but is particularly prevalent in the dairy, oil, and energy industries. Reduced energy performance that results from fouling represents significant operating loss in terms of both maintenance and impact on product quality and safety. In most industries, cleaning or replacing HEs are currently the only viable solutions for controlling fouling. This review examines the latest advances in the development of innovative materials and coatings for HEs that could mitigate the need for costly and frequent cleaning and potentially extend their operational life. To better understand the correlation between surface properties and fouling occurrence, we begin by providing an overview of the main mechanisms underlying fouling. We then present selected key strategies, which can differ considerably, for developing antifouling surfaces and conclude by discussing the current trends in the search for ideal materials for a range of applications. In our presentation of all these aspects, emphasis is given wherever possible to the potential transfer of these innovative surfaces from the laboratory to the three industries most concerned by HE fouling problems: food, petrochemicals, and energy production.
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Affiliation(s)
| | - Manon Saget
- Université Lille, CNRS, INRAE, Centrale Lille, UMR 8207-UMET-Unité Matériaux et Transformations , F-59000 Lille , France
| | - Guillaume Delaplace
- Université Lille, CNRS, INRAE, Centrale Lille, UMR 8207-UMET-Unité Matériaux et Transformations , F-59000 Lille , France
| | - Maude Jimenez
- Université Lille, CNRS, INRAE, Centrale Lille, UMR 8207-UMET-Unité Matériaux et Transformations , F-59000 Lille , France
| | - Vanessa Fierro
- Université de Lorraine, CNRS, IJL , F-88000 Epinal , France
| | - Alain Celzard
- Université de Lorraine, CNRS, IJL , F-88000 Epinal , France
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10
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Kant K, Pitchumani R. Laminar drag reduction in microchannels with liquid infused textured surfaces. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2020.116196] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Slippery Liquid-Infused Porous Polymeric Surfaces Based on Natural Oil with Antimicrobial Effect. Polymers (Basel) 2021; 13:polym13020206. [PMID: 33430082 PMCID: PMC7826890 DOI: 10.3390/polym13020206] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/11/2020] [Accepted: 01/05/2021] [Indexed: 01/31/2023] Open
Abstract
Many polymer materials have found a wide variety of applications in biomedical industries due to their excellent mechanical properties. However, the infections associated with the biofilm formation represent serious problems resulting from the initial bacterial attachment on the polymeric surface. The development of novel slippery liquid-infused porous surfaces (SLIPSs) represents promising method for the biofilm formation prevention. These surfaces are characterized by specific microstructural roughness able to hold lubricants inside. The lubricants create a slippery layer for the repellence of various liquids, such as water and blood. In this study, effective antimicrobial modifications of polyethylene (PE) and polyurethane (PU), as commonly used medical polymers, were investigated. For this purpose, low-temperature plasma treatment was used initially for activation of the polymeric surface, thereby enhancing surface and adhesion properties. Subsequently, preparation of porous microstructures was achieved by electrospinning technique using polydimethylsiloxane (PDMS) in combination with polyamide (PA). Finally, natural black seed oil (BSO) infiltrated the produced fiber mats acting as a lubricating layer. The optimized fiber mats' production was achieved using PDMS/PA mixture at ratio 1:1:20 (g/g/mL) using isopropyl alcohol as solvent. The surface properties of produced slippery surfaces were analyzed by various microscopic and optics techniques to obtain information about wettability, sliding behavior and surface morphology/topography. The modified PE and PU substrates demonstrated slippery behavior of an impinged water droplet at a small tilting angle. Moreover, the antimicrobial effects of the produced SLIPs using black seed oil were proven against Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli).
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12
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Peppou-Chapman S, Hong JK, Waterhouse A, Neto C. Life and death of liquid-infused surfaces: a review on the choice, analysis and fate of the infused liquid layer. Chem Soc Rev 2020; 49:3688-3715. [DOI: 10.1039/d0cs00036a] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We review the rational choice, the analysis, the depletion and the properties imparted by the liquid layer in liquid-infused surfaces – a new class of low-adhesion surface.
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Affiliation(s)
- Sam Peppou-Chapman
- School of Chemistry
- The University of Sydney
- Australia
- The University of Sydney Nano Institute
- The University of Sydney
| | - Jun Ki Hong
- School of Chemistry
- The University of Sydney
- Australia
- The University of Sydney Nano Institute
- The University of Sydney
| | - Anna Waterhouse
- The University of Sydney Nano Institute
- The University of Sydney
- Australia
- Central Clinical School
- Faculty of Medicine and Health
| | - Chiara Neto
- School of Chemistry
- The University of Sydney
- Australia
- The University of Sydney Nano Institute
- The University of Sydney
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