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Bina M, Krywko-Cendrowska A, Daubian D, Meier W, Palivan CG. Multicomponent Copolymer Planar Membranes with Nanoscale Domain Separation. NANO LETTERS 2022; 22:5077-5085. [PMID: 35771654 PMCID: PMC9284607 DOI: 10.1021/acs.nanolett.2c00332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Domain separation is crucial for proper cellular function and numerous biomedical technologies, especially artificial cells. While phase separation in hybrid membranes containing lipids and copolymers is well-known, the membranes' overall stability, limited by the lipid part, is hindering the technological applications. Here, we introduce a fully synthetic planar membrane undergoing phase separation into domains embedded within a continuous phase. The mono- and bilayer membranes are composed of two amphiphilic diblock copolymers (PEO45-b-PEHOx20 and PMOXA10-b-PDMS25) with distinct properties and mixed at various concentrations. The molar ratio of the copolymers in the mixture and the nature of the solid support were the key parameters inducing nanoscale phase separation of the planar membranes. The size of the domains and resulting morphology of the nanopatterned surfaces were tailored by adjusting the molar ratios of the copolymers and transfer conditions. Our approach opens new avenues for the development of biomimetic planar membranes with a nanoscale texture.
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2
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Gnanasampanthan T, Karthäuser JF, Spöllmann S, Wanka R, Becker HW, Rosenhahn A. Amphiphilic Alginate-Based Layer-by-Layer Coatings Exhibiting Resistance against Nonspecific Protein Adsorption and Marine Biofouling. ACS APPLIED MATERIALS & INTERFACES 2022; 14:16062-16073. [PMID: 35377590 DOI: 10.1021/acsami.2c01809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Amphiphilic coatings are promising materials for fouling-release applications, especially when their building blocks are inexpensive, biodegradable, and readily accessible polysaccharides. Here, amphiphilic polysaccharides were fabricated by coupling hydrophobic pentafluoropropylamine (PFPA) to carboxylate groups of hydrophilic alginic acid, a natural biopolymer with high water-binding capacity. Layer-by-layer (LbL) coatings comprising unmodified or amphiphilic alginic acid (AA*) and polyethylenimine (PEI) were assembled to explore how different PFPA contents affect their physicochemical properties, resistance against nonspecific adsorption (NSA) of proteins, and antifouling activity against marine bacteria (Cobetia marina) and diatoms (Navicula perminuta). The amphiphilic multilayers, characterized through spectroscopic ellipsometry, water contact angle goniometry, elemental analysis, AFM, XPS, and SPR spectroscopy, showed similar or even higher swelling in water and exhibited higher resistance toward NSA of proteins and microfouling marine organisms than multilayers without fluoroalkyl groups.
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Affiliation(s)
| | - Jana F Karthäuser
- Analytical Chemistry─Biointerfaces, Ruhr University Bochum, Bochum 44780, Germany
| | - Stephan Spöllmann
- RUBION, Central Unit for Ion Beams and Radionuclides, University of Bochum, Bochum 44780, Germany
| | - Robin Wanka
- Analytical Chemistry─Biointerfaces, Ruhr University Bochum, Bochum 44780, Germany
| | - Hans-Werner Becker
- RUBION, Central Unit for Ion Beams and Radionuclides, University of Bochum, Bochum 44780, Germany
| | - Axel Rosenhahn
- Analytical Chemistry─Biointerfaces, Ruhr University Bochum, Bochum 44780, Germany
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3
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Masuda T, Takai M. Design of biointerfaces composed of soft materials using controlled radical polymerizations. J Mater Chem B 2022; 10:1473-1485. [PMID: 35044413 DOI: 10.1039/d1tb02508b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Soft interface materials have an immense potential for the improvement of biointerfaces, which are the interface of biological and artificially designed materials. Controlling the chemical and physical structures of the interfaces at the nanometer level plays an important role in understanding the mechanism of the functioning and its applications. Controlled radical polymerization (CRP) techniques, including atom transfer radical polymerization (ATRP) and reversible addition-fragmentation chain-transfer (RAFT) polymerization, have been developed in the field of precision polymer chemistry. It allows the formation of well-defined surfaces such as densely packed polymer brushes and self-assembled nanostructures of block copolymers. More recently, a novel technique to prepare polymers containing biomolecules, called biohybrids, has also been developed, which is a consequence of the advancement of CRP so as to proceed in an aqueous media with oxygen. This review article summarizes recent advances in CRP for the design of biointerfaces.
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Affiliation(s)
- Tsukuru Masuda
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.
| | - Madoka Takai
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.
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4
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Senkum H, Kelly PV, Gramlich WM. Water-Stable Thin-Film Nanostructures from Amphiphilic Cationic Bottlebrush Block Copolymers by Grafting-through Ring-Opening Metathesis Polymerization. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hathaithep Senkum
- Department of Chemistry, University of Maine, 5706, Orono, Maine 04469, United States
| | - Peter V. Kelly
- Department of Chemistry, University of Maine, 5706, Orono, Maine 04469, United States
| | - William M. Gramlich
- Department of Chemistry, University of Maine, 5706, Orono, Maine 04469, United States
- Advanced Structures and Composites Center, University of Maine, Orono, Maine 04469, United States
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5
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Trivedi JS, Bera P, Bhalani DV, Jewrajka SK. In situ amphiphilic modification of thin film composite membrane for application in aqueous and organic solvents. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119155] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Lv J, Cheng Y. Fluoropolymers in biomedical applications: state-of-the-art and future perspectives. Chem Soc Rev 2021; 50:5435-5467. [DOI: 10.1039/d0cs00258e] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Biomedical applications of fluoropolymers in gene delivery, protein delivery, drug delivery, 19F MRI, PDT, anti-fouling, anti-bacterial, cell culture, and tissue engineering.
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Affiliation(s)
- Jia Lv
- Shanghai Key Laboratory of Regulatory Biology
- School of Life Sciences
- East China Normal University
- Shanghai
- China
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory Biology
- School of Life Sciences
- East China Normal University
- Shanghai
- China
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7
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Koschitzki F, Wanka R, Sobota L, Koc J, Gardner H, Hunsucker KZ, Swain GW, Rosenhahn A. Amphiphilic Dicyclopentenyl/Carboxybetaine-Containing Copolymers for Marine Fouling-Release Applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:34148-34160. [PMID: 32567832 DOI: 10.1021/acsami.0c07599] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Zwitterionic materials received great attention in recent studies due to their high antifouling potential, though their application in practical coatings is still challenging. Amphiphilic polymers have been proven to be an effective method to combat fouling in the marine environment. This study reports the incorporation of small amounts of zwitterionic carboxybetaine methacrylate (CBMA) into hydrophobic ethylene glycol dicyclopentenyl ether acrylate (DCPEA). A new set of copolymers with varying amphiphilicities was synthesized and coated on chemically modified glass substrates. The antifouling capabilities were assessed against the diatom Navicula perminuta and multiple species in the field. Unsurprisingly, high diatom densities were observed on the hydrophobic control coatings. The integration of small zwitterionic contents of only ∼5 wt % was already sufficient to rapidly form a hydrophilic interface that led to a strong reduction of fouling. Ultralow fouling was also observed for the pure zwitterionic coatings in laboratory experiments, but it failed when tested in the real ocean environment. We noticed that the ability to absorb large amounts of water and the diffuse nature of the interphase correlate with the adsorption of silt, which can mask the hydrophilic chemistries and facilitate the settlement of organisms. The amphiphilic coatings showed low fouling in dynamic short-term field exposures, which could be explained by the reduced tendency of the coatings for sediment adsorption.
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Affiliation(s)
- Florian Koschitzki
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - Robin Wanka
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - Lennart Sobota
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - Julian Koc
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - Harrison Gardner
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, Florida 32901, United States
| | - Kelli Z Hunsucker
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, Florida 32901, United States
| | - Geoffrey W Swain
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, Florida 32901, United States
| | - Axel Rosenhahn
- Analytical Chemistry-Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
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8
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Guazzelli E, Galli G, Martinelli E. The Effect of Poly(ethylene glycol) (PEG) Length on the Wettability and Surface Chemistry of PEG-Fluoroalkyl-Modified Polystyrene Diblock Copolymers and Their Two-Layer Films with Elastomer Matrix. Polymers (Basel) 2020; 12:E1236. [PMID: 32485870 PMCID: PMC7361959 DOI: 10.3390/polym12061236] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 05/26/2020] [Accepted: 05/28/2020] [Indexed: 01/10/2023] Open
Abstract
Diblock copolymers composed of a polystyrene first block and a PEG-fluoroalkyl chain-modified polystyrene second block were synthesized by controlled atom transfer radical polymerization (ATRP), starting from the same polystyrene macroinitiator. The wettability of the polymer film surfaces was investigated by measurements of static and dynamic contact angles. An increase in advancing water contact angle was evident for all the films after immersion in water for short times (10 and 1000 s), consistent with an unusual contraphilic switch of the PEG-fluoroalkyl side chains. Such a contraphilic response also accounted for the retained wettability of the polymer films upon prolonged contact with water, without an anticipated increase in the hydrophilic character. The copolymers were then used as surface-active modifiers of elastomer poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS)-based two-layer films. The elastomeric behavior of the films was varied by using SEBS matrices with different amounts of polystyrene. Whereas the mechanical properties strictly resembled those of the nature of the SEBS matrix, the surface properties were imposed by the additive. The contraphilic switch of the PEG-fluoroalkyl side chains resulted in an exceptionally high enrichment in fluorine of the film surface after immersion in water for seven days.
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Affiliation(s)
| | | | - Elisa Martinelli
- Dipartimento di Chimica e Chimica Industriale and UdR Pisa INSTM, Università di Pisa, via Moruzzi 13, 56124 Pisa, Italy; (E.G.); (G.G.)
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9
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Mortazavian H, Picquet GA, Lejnieks J, Zaidel LA, Myers CP, Kuroda K. Understanding the Role of Shape and Composition of Star-Shaped Polymers and their Ability to Both Bind and Prevent Bacteria Attachment on Oral Relevant Surfaces. J Funct Biomater 2019; 10:E56. [PMID: 31861070 PMCID: PMC6963222 DOI: 10.3390/jfb10040056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 12/11/2019] [Accepted: 12/13/2019] [Indexed: 11/23/2022] Open
Abstract
In this study, we have prepared a series of 4- and 6-arm star-shaped polymers with varying molecular weight and hydrophobicity in order to provide insight into the role and relationship that shape and composition have on the binding and protecting of oral relevant surfaces (hydroxyapatite, HAP) from bacteria colonization. Star-shaped acrylic acid polymers were prepared by free-radical polymerization in the presence of chain transfer agents with thiol groups, and their binding to the HAP surfaces and subsequent bacteria repulsion was measured. We observed that binding was dependent on both polymer shape and hydrophobicity (star vs. linear), but their relative efficacy to reduce oral bacteria attachment from surfaces was dependent on their hydrophobicity only. We further measured the macroscopic effects of these materials to modify the mucin-coated HAP surfaces through contact angle experiments; the degree of angle change was dependent on the relative hydrophobicity of the materials suggesting future in vivo efficacy. The results from this study highlight that star-shaped polymers represent a new material platform for the development of dental applications to control bacterial adhesion which can lead to tooth decay, with various compositional and structural aspects of materials being vital to effectively design oral care products.
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Affiliation(s)
- Hamid Mortazavian
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA; (H.M.); (J.L.)
| | - Guillaume A. Picquet
- Oral Care Early Research, Colgate-Palmolive Company, Piscataway, NJ 08855, USA; (G.A.P.); (L.A.Z.)
| | - Jānis Lejnieks
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA; (H.M.); (J.L.)
| | - Lynette A. Zaidel
- Oral Care Early Research, Colgate-Palmolive Company, Piscataway, NJ 08855, USA; (G.A.P.); (L.A.Z.)
| | - Carl P. Myers
- Oral Care Early Research, Colgate-Palmolive Company, Piscataway, NJ 08855, USA; (G.A.P.); (L.A.Z.)
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA; (H.M.); (J.L.)
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10
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Echelmeier A, Kim D, Cruz Villarreal J, Coe J, Quintana S, Brehm G, Egatz-Gomez A, Nazari R, Sierra RG, Koglin JE, Batyuk A, Hunter MS, Boutet S, Zatsepin N, Kirian RA, Grant TD, Fromme P, Ros A. 3D printed droplet generation devices for serial femtosecond crystallography enabled by surface coating. J Appl Crystallogr 2019; 52:997-1008. [PMID: 31636518 DOI: 10.1107/s1600576719010343] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 07/19/2019] [Indexed: 11/10/2022] Open
Abstract
The role of surface wetting properties and their impact on the performance of 3D printed microfluidic droplet generation devices for serial femtosecond crystallography (SFX) are reported. SFX is a novel crystallography method enabling structure determination of proteins at room temperature with atomic resolution using X-ray free-electron lasers (XFELs). In SFX, protein crystals in their mother liquor are delivered and intersected with a pulsed X-ray beam using a liquid jet injector. Owing to the pulsed nature of the X-ray beam, liquid jets tend to waste the vast majority of injected crystals, which this work aims to overcome with the delivery of aqueous protein crystal suspension droplets segmented by an oil phase. For this purpose, 3D printed droplet generators that can be easily customized for a variety of XFEL measurements have been developed. The surface properties, in particular the wetting properties of the resist materials compatible with the employed two-photon printing technology, have so far not been characterized extensively, but are crucial for stable droplet generation. This work investigates experimentally the effectiveness and the long-term stability of three different surface treatments on photoresist films and glass as models for our 3D printed droplet generator and the fused silica capillaries employed in the other fluidic components of an SFX experiment. Finally, the droplet generation performance of an assembly consisting of the 3D printed device and fused silica capillaries is examined. Stable and reproducible droplet generation was achieved with a fluorinated surface coating which also allowed for robust downstream droplet delivery. Experimental XFEL diffraction data of crystals formed from the large membrane protein complex photosystem I demonstrate the full compatibility of the new injection method with very fragile membrane protein crystals and show that successful droplet generation of crystal-laden aqueous droplets intersected by an oil phase correlates with increased crystal hit rates.
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Affiliation(s)
- Austin Echelmeier
- School of Molecular Sciences, Arizona State University, Tempe, Arizona, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Daihyun Kim
- School of Molecular Sciences, Arizona State University, Tempe, Arizona, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Jorvani Cruz Villarreal
- School of Molecular Sciences, Arizona State University, Tempe, Arizona, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Jesse Coe
- School of Molecular Sciences, Arizona State University, Tempe, Arizona, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Sebastian Quintana
- School of Molecular Sciences, Arizona State University, Tempe, Arizona, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Gerrit Brehm
- Institute for X-ray Physics, University of Göttingen, Göttingen, Germany
| | - Ana Egatz-Gomez
- School of Molecular Sciences, Arizona State University, Tempe, Arizona, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Reza Nazari
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona, USA.,Department of Physics, Arizona State University, Tempe, Arizona, USA
| | - Raymond G Sierra
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Jason E Koglin
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Alexander Batyuk
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Mark S Hunter
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Sébastien Boutet
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Nadia Zatsepin
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona, USA.,Department of Physics, Arizona State University, Tempe, Arizona, USA
| | - Richard A Kirian
- Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona, USA.,Department of Physics, Arizona State University, Tempe, Arizona, USA
| | - Thomas D Grant
- Hauptman-Woodward Institute, Department of Structural Biology, Jacobs School of Medicine and Biomedical Sciences, SUNY University at Buffalo, Buffalo, New York, USA
| | - Petra Fromme
- School of Molecular Sciences, Arizona State University, Tempe, Arizona, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Alexandra Ros
- School of Molecular Sciences, Arizona State University, Tempe, Arizona, USA.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe, Arizona, USA
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11
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12
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Halvey AK, Macdonald B, Dhyani A, Tuteja A. Design of surfaces for controlling hard and soft fouling. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2019; 377:20180266. [PMID: 30967072 PMCID: PMC6335287 DOI: 10.1098/rsta.2018.0266] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/12/2018] [Indexed: 05/29/2023]
Abstract
In this review, we present a framework to guide the design of surfaces which are resistant to solid fouling, based on the modulus and length scale of the fouling material. Solid fouling is defined as the undesired attachment of solid contaminants including ice, clathrates, waxes, inorganic scale, polymers, proteins, dust and biological materials. We first provide an overview of the surface design approaches typically applied across the scope of solid fouling and explain how these disparate research efforts can be united to an extent under a single framework. We discuss how the elastic modulus and the operating length scale of a foulant determine its ability or inability to elastically deform surfaces. When surface deformation occurs, minimization of the substrate elastic modulus is critical for the facile de-bonding of a solid contaminant. Foulants with low modulus or small deposition sizes cannot deform an elastic bulk material and instead de-bond more readily from surfaces with chemistries that minimize their interfacial free energy or induce a particular repellant interaction with the foulant. Overall, we review reported surface design strategies for the reduction in solid fouling, and provide perspective regarding how our framework, together with the modulus and length scale of a foulant, can guide future antifouling surface designs. This article is part of the theme issue 'Bioinspired materials and surfaces for green science and technology'.
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Affiliation(s)
- Alex Kate Halvey
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- BioInterfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Brian Macdonald
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- BioInterfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Abhishek Dhyani
- BioInterfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
- Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Anish Tuteja
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- BioInterfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
- Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
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13
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Efficient preparation of a novel PVDF antifouling membrane based on the solvent-responsive cleaning properties. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.07.088] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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14
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Ghoussoub YE, Fares HM, Delgado JD, Keller LR, Schlenoff JB. Antifouling Ion-Exchange Resins. ACS APPLIED MATERIALS & INTERFACES 2018; 10:41747-41756. [PMID: 30456944 DOI: 10.1021/acsami.8b12865] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Large quantities of organic ion-exchange resins are used worldwide for water decontamination and polishing. Fouling by microorganisms and decomposition products of natural organic matter severely limits the lifetime of these resins. Much research has thus been invested in polymer-based antifouling coatings. In the present study, poly(4-styrenesulfonate) (PSS) and a co-polymer of PSS and a zwitterionic group were used to spontaneously coat commercial Dowex 1X8 anion-exchange resin. UV-visible spectroscopy provided a precise measure of the kinetics and amount of PSS sorbed onto or into resin beads. When challenged with Chlamydomonas reinhardtii algae, uncoated resin was rapidly fouled by algae. Coating the resin with either the homopolymer of PSS or the co-polymer with zwitterion eliminated fouling. Using narrow- and wide-molecular-weight distribution PSS, a cutoff molecular weight of about 240 repeat units was found, above which PSS was unable to diffuse into the resin. Thus, only one monolayer of added PSS was sufficient to confer a highly desirable antifouling property on this resin while consuming less than 0.1% of the exchanger capacity. Radioactive sulfate ions were used to probe the kinetics of (self)exchange, which were virtually unaffected by the PSS coating. This resin treatment is a fast, ultra-low-cost step for potentially enhancing the lifetime of ion exchangers.
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15
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Lepowsky E, Tasoglu S. Emerging Anti-Fouling Methods: Towards Reusability of 3D-Printed Devices for Biomedical Applications. MICROMACHINES 2018; 9:E196. [PMID: 30424129 PMCID: PMC6187557 DOI: 10.3390/mi9040196] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 04/07/2018] [Accepted: 04/19/2018] [Indexed: 12/21/2022]
Abstract
Microfluidic devices are used in a myriad of biomedical applications such as cancer screening, drug testing, and point-of-care diagnostics. Three-dimensional (3D) printing offers a low-cost, rapid prototyping, efficient fabrication method, as compared to the costly-in terms of time, labor, and resources-traditional fabrication method of soft lithography of poly(dimethylsiloxane) (PDMS). Various 3D printing methods are applicable, including fused deposition modeling, stereolithography, and photopolymer inkjet printing. Additionally, several materials are available that have low-viscosity in their raw form and, after printing and curing, exhibit high material strength, optical transparency, and biocompatibility. These features make 3D-printed microfluidic chips ideal for biomedical applications. However, for developing devices capable of long-term use, fouling-by nonspecific protein absorption and bacterial adhesion due to the intrinsic hydrophobicity of most 3D-printed materials-presents a barrier to reusability. For this reason, there is a growing interest in anti-fouling methods and materials. Traditional and emerging approaches to anti-fouling are presented in regard to their applicability to microfluidic chips, with a particular interest in approaches compatible with 3D-printed chips.
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Affiliation(s)
- Eric Lepowsky
- Department of Mechanical Engineering, University of Connecticut, Storrs, CT 06269, USA.
| | - Savas Tasoglu
- Department of Mechanical Engineering, University of Connecticut, Storrs, CT 06269, USA.
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA.
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA.
- Institute for Collaboration on Health, Intervention, and Policy, University of Connecticut, Storrs, CT 06269, USA.
- The Connecticut Institute for the Brain and Cognitive Sciences, University of Connecticut, Storrs, CT 06269, USA.
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16
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Lu Z, Chen Z, Guo Y, Ju Y, Liu Y, Feng R, Xiong C, Ober CK, Dong L. Flexible Hydrophobic Antifouling Coating with Oriented Nanotopography and Nonleaking Capsaicin. ACS APPLIED MATERIALS & INTERFACES 2018; 10:9718-9726. [PMID: 29464942 DOI: 10.1021/acsami.7b19436] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Incorporating natural product antifoulants (NPAs) into coatings with controlled surface topography is considered a promising way to suppress marine fouling. However, the rapid leakage of NPAs and the relatively complicated process of constructing well-patterned topography remain unresolved problems for practical applications. In this work, capsaicin bonded to CoFe2O4/gelatin magnetic nanoparticles was mixed with a polydimethylsiloxane (PDMS)-based block copolymer. When applied together by a simple spray-coating method, these materials formed a film. The leakage of capsaicin was restrained by the chemical bonds with the CoFe2O4/gelatin nanospheres. The primary nanorough structure was constructed by the phase separation of the PDMS-based copolymer. The secondary nanorough structure was formed by the incorporation of capsaicin-loaded CoFe2O4/gelatin nanospheres, which were demonstrated to improve the orientation of the PDMS-based block copolymer chains. The combination of oriented nanotopography and nonleaking capsaicin endows the coating with enhanced, long-lasting antifouling ability.
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Affiliation(s)
- Zhiwei Lu
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Zhuo Chen
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Yi Guo
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Yanyun Ju
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Yang Liu
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Rui Feng
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Chuanxi Xiong
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Christopher K Ober
- Department of Materials Science and Engineering , Cornell University , New York 14853 , United States
| | - Lijie Dong
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
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17
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Salunke N, Nallapaneni A, Yuan G, Stafford CM, Niu H, Shawkey MD, Weiss RA, Karim A. Film Confinement Induced "Jump-Percolation" Wetting Transition in Amphiphilic Block Copolymer Films. ACS APPLIED MATERIALS & INTERFACES 2017; 9:35349-35359. [PMID: 28925687 DOI: 10.1021/acsami.7b07245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report a first-order like sharp surface wettability transition with varying film thickness dependent morphology in cast films of an amphiphilic triblock copolymer. Films composed of poly(2-(N-ethylperfluorooctanesulfonamido) ethyl methyl acrylate), poly(FOSM), and poly(N,N'-dimethyl acrylamide), poly(DMA), with thickness (h) in the transition-range, 200 < h < 300 nm, exhibited an abrupt hydrophobic to hydrophilic dynamic water contact angle transition. After an induction time, ti ≈ 40 to 180 s, water contact angle varied as θc ≈ 116° to 40° with an ultrafast contact angle decay time constant, [Formula: see text] ≈ -18°/s. This behavior is a result of competing heterogeneous and antagonistic effects of bumpy poly(DMA) wetting domains against a nonwetting planar poly(FOSM) background, with a "jump percolation" wetting transition when the poly(DMA) domain density reaches unity. Outside of this film thickness range, relatively shallow decreasing water contact angle gradients were observed with a monotonically increasing poly(DMA) domain area coverage with increasing film thickness in the overall range of 40 nm (hydrophobic, θc ≈ 118°) < h < 500 nm (hydrophilic, θc ≈ 8°). The optical diffuse reflectance properties of these rough surfaces exhibit an onset of diffuse reflectance maxima correlated to the transition morphology film thickness.
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Affiliation(s)
- Namrata Salunke
- Department of Polymer Engineering, The University of Akron , 250 South Forge Street, Akron, Ohio 44325-0301, United States
| | - Asritha Nallapaneni
- Department of Polymer Engineering, The University of Akron , 250 South Forge Street, Akron, Ohio 44325-0301, United States
| | - Guangcui Yuan
- Department of Polymer Engineering, The University of Akron , 250 South Forge Street, Akron, Ohio 44325-0301, United States
- National Institute of Standards and Technology , Gaithersburg, Maryland 20899, United States
| | - Christopher M Stafford
- National Institute of Standards and Technology , Gaithersburg, Maryland 20899, United States
| | | | | | - R A Weiss
- Department of Polymer Engineering, The University of Akron , 250 South Forge Street, Akron, Ohio 44325-0301, United States
| | - Alamgir Karim
- Department of Polymer Engineering, The University of Akron , 250 South Forge Street, Akron, Ohio 44325-0301, United States
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18
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Wenning BM, Martinelli E, Mieszkin S, Finlay JA, Fischer D, Callow JA, Callow ME, Leonardi AK, Ober CK, Galli G. Model Amphiphilic Block Copolymers with Tailored Molecular Weight and Composition in PDMS-Based Films to Limit Soft Biofouling. ACS APPLIED MATERIALS & INTERFACES 2017; 9:16505-16516. [PMID: 28429593 DOI: 10.1021/acsami.7b03168] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A set of controlled surface composition films was produced utilizing amphiphilic block copolymers dispersed in a cross-linked poly(dimethylsiloxane) network. These block copolymers contained oligo(ethylene glycol) (PEGMA) and fluoroalkyl (AF6) side chains in selected ratios and molecular weights to control surface chemistry including antifouling and fouling-release performance. Such properties were assessed by carrying out assays using two algae, the green macroalga Ulva linza (favors attachment to polar surfaces) and the unicellular diatom Navicula incerta (favors attachment to nonpolar surfaces). All films performed well against U. linza and exhibited high removal of attached sporelings (young plants) under an applied shear stress, with the lower molecular weight block copolymers being the best performing in the set. The composition ratios from 50:50 to 60:40 of the AF6/PEGMA side groups were shown to be more effective, with several films exhibiting spontaneous removal of the sporelings. The cells of N. incerta were also removed from several coating compositions. All films were characterized by surface techniques including captive bubble contact angle, atomic force microscopy, and near edge X-ray absorption fine structure spectroscopy to correlate surface chemistry and morphology with biological performance.
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Affiliation(s)
- Brandon M Wenning
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , Pisa 56124, Italy
| | - Elisa Martinelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , Pisa 56124, Italy
| | - Sophie Mieszkin
- School of Biosciences, The University of Birmingham , Edgbaston, Birmingham B15 5TT, U.K
| | - John A Finlay
- School of Biosciences, The University of Birmingham , Edgbaston, Birmingham B15 5TT, U.K
| | - Daniel Fischer
- National Institute of Standards and Technology , Gaithersburg, Maryland 20899, United States
| | - James A Callow
- School of Biosciences, The University of Birmingham , Edgbaston, Birmingham B15 5TT, U.K
| | - Maureen E Callow
- School of Biosciences, The University of Birmingham , Edgbaston, Birmingham B15 5TT, U.K
| | | | | | - Giancarlo Galli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , Pisa 56124, Italy
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19
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Galli G, Martinelli E. Amphiphilic Polymer Platforms: Surface Engineering of Films for Marine Antibiofouling. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201600704] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Revised: 12/31/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Giancarlo Galli
- Dipartimento di Chimica e Chimica Industriale and UdR Pisa INSTM; Università di Pisa; 56124 Pisa Italy
| | - Elisa Martinelli
- Dipartimento di Chimica e Chimica Industriale and UdR Pisa INSTM; Università di Pisa; 56124 Pisa Italy
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20
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Kirillova A, Marschelke C, Friedrichs J, Werner C, Synytska A. Hybrid Hairy Janus Particles as Building Blocks for Antibiofouling Surfaces. ACS APPLIED MATERIALS & INTERFACES 2016; 8:32591-32603. [PMID: 27933847 DOI: 10.1021/acsami.6b10588] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Herein, we report a new strategy for the design of antifouling surfaces by using hybrid hairy Janus particles. The amphiphilic Janus particles possess either a spherical or a plateletlike shape and have core-shell structures with an inorganic core and hydrophilic/hydrophobic polymeric shells. Subsequently, these bifunctional Janus particles enable the fabrication of surfaces with modularity in chemical composition and final surface topography, which possess antifouling properties. The antifouling and fouling-release capability of the composite Janus particle-based surfaces is investigated using the marine biofilm-forming bacteria Cobetia marina. The Janus particle-based coatings are robust and significantly reduce bacterial retention under both static and dynamic conditions independent of the particle geometry. The plateletlike (kaolinite-based) Janus particles represent a scalable system for the rational design of antifouling coatings as well as their large-scale production and application in the future.
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Affiliation(s)
- Alina Kirillova
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Strasse 6, 01069 Dresden, Germany
- Technische Universität Dresden , Fakultät Mathematik und Naturwissenschaften, 01062 Dresden, Germany
| | - Claudia Marschelke
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Strasse 6, 01069 Dresden, Germany
- Technische Universität Dresden , Fakultät Mathematik und Naturwissenschaften, 01062 Dresden, Germany
| | - Jens Friedrichs
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Strasse 6, 01069 Dresden, Germany
- Technische Universität Dresden , Fakultät Mathematik und Naturwissenschaften, 01062 Dresden, Germany
| | - Carsten Werner
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Strasse 6, 01069 Dresden, Germany
- Technische Universität Dresden , Fakultät Mathematik und Naturwissenschaften, 01062 Dresden, Germany
| | - Alla Synytska
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Strasse 6, 01069 Dresden, Germany
- Technische Universität Dresden , Fakultät Mathematik und Naturwissenschaften, 01062 Dresden, Germany
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21
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Shivapooja P, Cao C, Orihuela B, Levering V, Zhao X, Rittschof D, López GP. Incorporation of silicone oil into elastomers enhances barnacle detachment by active surface strain. BIOFOULING 2016; 32:1017-1028. [PMID: 27560712 DOI: 10.1080/08927014.2016.1209186] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 06/28/2016] [Indexed: 06/06/2023]
Abstract
Silicone-oil additives are often used in fouling-release silicone coatings to reduce the adhesion strength of barnacles and other biofouling organisms. This study follows on from a recently reported active approach to detach barnacles, which was based on the surface strain of elastomeric materials, by investigating a new, dual-action approach to barnacle detachment using Ecoflex®-based elastomers incorporated with poly(dimethylsiloxane)-based oil additives. The experimental results support the hypothesis that silicone-oil additives reduce the amount of substratum strain required to detach barnacles. The study also de-coupled the two effects of silicone oils (ie surface-activity and alteration of the bulk modulus) and examined their contributions in reducing barnacle adhesion strength. Further, a finite element model based on fracture mechanics was employed to qualitatively understand the effects of surface strain and substratum modulus on barnacle adhesion strength. The study demonstrates that dynamic substratum deformation of elastomers with silicone-oil additives provides a bifunctional approach towards management of biofouling by barnacles.
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Affiliation(s)
| | - Changyong Cao
- b Department of Mechanical Engineering and Materials Science , Duke University , Durham , NC , USA
| | - Beatriz Orihuela
- c Duke University Marine Laboratory , Nicholas School of the Environment , Beaufort , NC , USA
| | - Vrad Levering
- a Department of Biomedical Engineering , Duke University , Durham , NC , USA
| | - Xuanhe Zhao
- b Department of Mechanical Engineering and Materials Science , Duke University , Durham , NC , USA
- d Research Triangle Material Research Science & Engineering Center, Duke University , Durham , NC , USA
- e Department of Mechanical Engineering, Massachusetts Institute of Technology , Cambridge , MA , USA
| | - Daniel Rittschof
- c Duke University Marine Laboratory , Nicholas School of the Environment , Beaufort , NC , USA
| | - Gabriel P López
- a Department of Biomedical Engineering , Duke University , Durham , NC , USA
- b Department of Mechanical Engineering and Materials Science , Duke University , Durham , NC , USA
- d Research Triangle Material Research Science & Engineering Center, Duke University , Durham , NC , USA
- f Center for Biomedical Engineering, Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , NM , USA
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22
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Damon CA, Gatley CM, Beres JJ, Finlay JA, Franco SC, Clare AS, Detty MR. The performance of hybrid titania/silica-derived xerogels as active antifouling/fouling-release surfaces against the marine alga Ulva linza: in situ generation of hypohalous acids. BIOFOULING 2016; 32:883-896. [PMID: 27458654 DOI: 10.1080/08927014.2016.1203420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 06/14/2016] [Indexed: 06/06/2023]
Abstract
Mixed titania/silica xerogels were prepared using titanium tetraisopropoxide (TTIP) and tetraethoxy orthosilicate (TEOS). Xerogel properties were modified by incorporating n-octyltriethoxysilane (C8). The xerogels catalyze the oxidation of bromide and chloride with hydrogen peroxide (H2O2) to produce hypohalous acids at pH 7 and pH 8. The antifouling/ fouling-release performance of a TTIP/C8/TEOS xerogel in the presence and absence of H2O2 was evaluated for the settlement of zoospores of the marine alga Ulva linza and for the removal of sporelings (young plants). In the absence of H2O2, differences in the settlement of zoospores and removal of sporelings were not significant relative to a titanium-free C8/TEOS xerogel. Addition of H2O2 gave a significant reduction in zoospore settlement and sporeling removal relative to the C8/TEOS xerogel and relative to peroxide-free conditions. The impact of TTIP on xerogel characteristics was evaluated by comprehensive contact angle analysis, scanning electron microscopy, and X-ray photoelectron spectroscopy.
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Affiliation(s)
- Corey A Damon
- a Department of Chemistry , University at Buffalo, The State University of New York , Buffalo , NY , USA
| | - Caitlyn M Gatley
- a Department of Chemistry , University at Buffalo, The State University of New York , Buffalo , NY , USA
| | - Joshua J Beres
- a Department of Chemistry , University at Buffalo, The State University of New York , Buffalo , NY , USA
| | - John A Finlay
- b School of Marine Science and Technology , Newcastle University , Newcastle-upon-Tyne , UK
| | - Sofia C Franco
- b School of Marine Science and Technology , Newcastle University , Newcastle-upon-Tyne , UK
| | - Anthony S Clare
- b School of Marine Science and Technology , Newcastle University , Newcastle-upon-Tyne , UK
| | - Michael R Detty
- a Department of Chemistry , University at Buffalo, The State University of New York , Buffalo , NY , USA
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23
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Martinelli E, Gunes D, Wenning BM, Ober CK, Finlay JA, Callow ME, Callow JA, Di Fino A, Clare AS, Galli G. Effects of surface-active block copolymers with oxyethylene and fluoroalkyl side chains on the antifouling performance of silicone-based films. BIOFOULING 2016; 32:81-93. [PMID: 26769148 DOI: 10.1080/08927014.2015.1131822] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Block copolymers made from a poly(dimethyl siloxane) (Si) and a poly(meth)acrylate carrying oxyethylene (EG) or fluoroalkyl (AF) side chains were synthesized and incorporated as surface-active components into a silicone matrix to produce cross-linked films with different surface hydrophilicity/phobicity. Near-edge X-ray absorption fine structure (NEXAFS) studies showed that film surfaces containing Si-EG were largely populated by the siloxane, with the oxyethylene chains present only to a minor extent. In contrast, the fluorinated block was selectively segregated to the polymer-air interface in films containing Si-AF as probed by NEXAFS and X-ray photoelectron spectroscopy (XPS) analyses. Such differences in surface composition were reflected in the biological performance of the coatings. While the films with Si-EG showed a higher removal of both Ulva linza sporelings and Balanus amphitrite juveniles than the silicone control, those with Si-AF exhibited excellent antifouling properties, preventing the settlement of cyprids of B. amphitrite.
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Affiliation(s)
- Elisa Martinelli
- a Dipartimento di Chimica e Chimica Industriale and UdR Pisa INSTM , Università di Pisa , Pisa , Italy
| | - Deniz Gunes
- a Dipartimento di Chimica e Chimica Industriale and UdR Pisa INSTM , Università di Pisa , Pisa , Italy
| | - Brandon M Wenning
- b Department of Materials Science and Engineering , Cornell University , Ithaca, New York , USA
| | - Christopher K Ober
- b Department of Materials Science and Engineering , Cornell University , Ithaca, New York , USA
| | - John A Finlay
- c School of Biosciences, University of Birmingham , Birmingham , UK
| | - Maureen E Callow
- c School of Biosciences, University of Birmingham , Birmingham , UK
| | - James A Callow
- c School of Biosciences, University of Birmingham , Birmingham , UK
| | - Alessio Di Fino
- d School of Marine Science and Technology , Newcastle University , Newcastle-upon-Tyne , UK
| | - Anthony S Clare
- d School of Marine Science and Technology , Newcastle University , Newcastle-upon-Tyne , UK
| | - Giancarlo Galli
- a Dipartimento di Chimica e Chimica Industriale and UdR Pisa INSTM , Università di Pisa , Pisa , Italy
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24
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Yang J, Li L, Ma C, Ye X. Degradable polyurethane with poly(2-ethyl-2-oxazoline) brushes for protein resistance. RSC Adv 2016. [DOI: 10.1039/c6ra13663j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The effects of chain length and graft density of poly(2-ethyl-2-oxazoline) on the protein resistance of degradable polyurethane-graft-poly(2-ethyl-2-oxazoline) with PCL as the soft segment have been investigated.
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Affiliation(s)
- Jinxian Yang
- Hefei National Laboratory for Physical Sciences at the Microscale
- Department of Chemical Physics
- University of Science and Technology of China
- Hefei
- China
| | - Lianwei Li
- Hefei National Laboratory for Physical Sciences at the Microscale
- Department of Chemical Physics
- University of Science and Technology of China
- Hefei
- China
| | - Chunfeng Ma
- Faculty of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Xiaodong Ye
- Hefei National Laboratory for Physical Sciences at the Microscale
- Department of Chemical Physics
- University of Science and Technology of China
- Hefei
- China
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25
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Pavlović D, Lafond S, Margaillan A, Bressy C. Facile synthesis of graft copolymers of controlled architecture. Copolymerization of fluorinated and non-fluorinated poly(dimethylsiloxane) macromonomers with trialkylsilyl methacrylates using RAFT polymerization. Polym Chem 2016. [DOI: 10.1039/c6py00026f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and spectroscopic characterization of a new family of statistical and diblock graft copolymers is described.
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Affiliation(s)
- D. Pavlović
- Laboratoire Matériaux Polymères-Interfaces-Environnement Marin (MAPIEM)
- Université de Toulon
- 83957 La Garde
- France
| | - S. Lafond
- Laboratoire Matériaux Polymères-Interfaces-Environnement Marin (MAPIEM)
- Université de Toulon
- 83957 La Garde
- France
| | - A. Margaillan
- Laboratoire Matériaux Polymères-Interfaces-Environnement Marin (MAPIEM)
- Université de Toulon
- 83957 La Garde
- France
| | - C. Bressy
- Laboratoire Matériaux Polymères-Interfaces-Environnement Marin (MAPIEM)
- Université de Toulon
- 83957 La Garde
- France
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26
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Synthesis, characterization and antifouling performance of ABC-type fluorinated amphiphilic triblock copolymer. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1554-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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27
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Surface Chemistry of Amphiphilic Polysiloxane/Triethyleneglycol-Modified Poly(pentafluorostyrene) Block Copolymer Films Before and After Water Immersion. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500221] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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28
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Huang H, Qu J, He L. Amphiphilic silica/fluoropolymer nanoparticles: Synthesis, tem-responsive and surface properties as protein-resistance coatings. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27785] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hongpu Huang
- Department of Chemistry, School of Science; Xi'an Jiaotong University; Xi'an 710049 China
| | - Jia Qu
- Department of Chemistry, School of Science; Xi'an Jiaotong University; Xi'an 710049 China
| | - Ling He
- Department of Chemistry, School of Science; Xi'an Jiaotong University; Xi'an 710049 China
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29
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Hao G, Zhu L, Yang W, Chen Y, Huang Q. Investigation of fluorosilicone polyacrylate film forming behavior on steel and PET substrates. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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30
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Anti-fouling Coatings of Poly(dimethylsiloxane) Devices for Biological and Biomedical Applications. J Med Biol Eng 2015; 35:143-155. [PMID: 25960703 PMCID: PMC4414934 DOI: 10.1007/s40846-015-0029-4] [Citation(s) in RCA: 211] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 01/13/2014] [Indexed: 01/07/2023]
Abstract
Fouling initiated by nonspecific protein adsorption is a great challenge in biomedical applications, including biosensors, bioanalytical devices, and implants. Poly(dimethylsiloxane) (PDMS), a popular material with many attractive properties for device fabrication in the biomedical field, suffers serious fouling problems from protein adsorption due to its hydrophobic nature, which limits the practical use of PDMS-based devices. Effort has been made to develop biocompatible materials for anti-fouling coatings of PDMS. In this review, typical nonfouling materials for PDMS coatings are introduced and the associated basic anti-fouling mechanisms, including the steric repulsion mechanism and the hydration layer mechanism, are described. Understanding the relationships between the characteristics of coating materials and the accompanying anti-fouling mechanisms is critical for preparing PDMS coatings with desirable anti-fouling properties.
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31
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Martinelli E, Guazzelli E, Bartoli C, Gazzarri M, Chiellini F, Galli G, Callow ME, Callow JA, Finlay JA, Hill S. Amphiphilic pentablock copolymers and their blends with PDMS for antibiofouling coatings. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27554] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Elisa Martinelli
- Dipartimento di Chimica e Chimica Industriale; UdR Pisa INSTM, Università di Pisa; via G. Moruzzi 3 56124 Pisa Italy
| | - Elisa Guazzelli
- Dipartimento di Chimica e Chimica Industriale; UdR Pisa INSTM, Università di Pisa; via G. Moruzzi 3 56124 Pisa Italy
| | - Cristina Bartoli
- Dipartimento di Chimica e Chimica Industriale; UdR Pisa INSTM, Università di Pisa; via G. Moruzzi 3 56124 Pisa Italy
| | - Matteo Gazzarri
- Dipartimento di Chimica e Chimica Industriale; UdR Pisa INSTM, Università di Pisa; via G. Moruzzi 3 56124 Pisa Italy
| | - Federica Chiellini
- Dipartimento di Chimica e Chimica Industriale; UdR Pisa INSTM, Università di Pisa; via G. Moruzzi 3 56124 Pisa Italy
| | - Giancarlo Galli
- Dipartimento di Chimica e Chimica Industriale; UdR Pisa INSTM, Università di Pisa; via G. Moruzzi 3 56124 Pisa Italy
| | - Maureen E. Callow
- School of Biosciences, University of Birmingham; Birmingham B15 2TT United Kingdom
| | - James A. Callow
- School of Biosciences, University of Birmingham; Birmingham B15 2TT United Kingdom
| | - John A. Finlay
- School of Biosciences, University of Birmingham; Birmingham B15 2TT United Kingdom
| | - Sophie Hill
- School of Biosciences, University of Birmingham; Birmingham B15 2TT United Kingdom
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32
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Nurioglu AG, Esteves ACC, de With G. Non-toxic, non-biocide-release antifouling coatings based on molecular structure design for marine applications. J Mater Chem B 2015; 3:6547-6570. [DOI: 10.1039/c5tb00232j] [Citation(s) in RCA: 242] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Antifouling (AF) coatings bring economic benefits but raise environmental and health concerns. Non-toxic, non-biocide-release AF strategies are reviewed according to “detachment of biofoulants” and “prevention of attachment” approaches. Chemical and physical aspects of AF mechanisms and new amphiphilic, superhydrophilic and topographic AF strategies are discussed.
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Affiliation(s)
- Ayda G. Nurioglu
- Laboratory of Materials and Interface Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- Eindhoven
- Netherlands
| | - A. Catarina C. Esteves
- Laboratory of Materials and Interface Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- Eindhoven
- Netherlands
| | - Gijsbertus de With
- Laboratory of Materials and Interface Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- Eindhoven
- Netherlands
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33
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Wu HX, Tan L, Yang MY, Liu CJ, Zhuo RX. Protein-resistance performance of amphiphilic copolymer brushes consisting of fluorinated polymers and polyacrylamide grafted from silicon surfaces. RSC Adv 2015. [DOI: 10.1039/c4ra16036c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
A series of random copolymer brushes of acrylamide (AM) and 2-(perfluorinated hexyl)ethyl methacrylate (FMA) were grafted from initiator-functionalized silicon wafers by surface-initiated atom transfer radical polymerization.
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Affiliation(s)
- Hai-Xia Wu
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
| | - Lei Tan
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
| | - Mei-Yan Yang
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
| | - Chuan-Jun Liu
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
| | - Ren-Xi Zhuo
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
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34
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Shivapooja P, Wang Q, Szott LM, Orihuela B, Rittschof D, Zhao X, López GP. Dynamic surface deformation of silicone elastomers for management of marine biofouling: laboratory and field studies using pneumatic actuation. BIOFOULING 2015; 31:265-274. [PMID: 25917206 DOI: 10.1080/08927014.2015.1035651] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Many strategies have been developed to improve the fouling release (FR) performance of silicone coatings. However, biofilms inevitably build on these surfaces over time. Previous studies have shown that intentional deformation of silicone elastomers can be employed to detach biofouling species. In this study, inspired by the methods used in soft-robotic systems, controlled deformation of silicone elastomers via pneumatic actuation was employed to detach adherent biofilms. Using programmed surface deformation, it was possible to release > 90% of biofilm from surfaces in both laboratory and field environments. A higher substratum strain was required to remove biofilms accumulated in the field environment as compared with laboratory-grown biofilms. Further, the study indicated that substratum modulus influences the strain needed to de-bond biofilms. Surface deformation-based approaches have potential for use in the management of biofouling in a number of technological areas, including in niche applications where pneumatic actuation of surface deformation is feasible.
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35
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Shen L, Xie J, Tao J, Zhu J. Anti-biofouling surface with sub-20 nm heterogeneous nanopatterns. J Mater Chem B 2015; 3:1157-1162. [DOI: 10.1039/c4tb01905a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We have developed a nanometer-sized heterogeneous pattern with an excellent anti-biofouling property to control protein–surface/cell–surface interactions at the molecular level.
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Affiliation(s)
- Lei Shen
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan
- China
| | - Jun Xie
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan
- China
- Department of Dermatology
| | - Juan Tao
- Department of Dermatology
- Affiliated Union Hospital
- Tongji Medical College
- HUST
- Wuhan
| | - Jintao Zhu
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan
- China
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36
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Soltannia B, Sameoto D. Strong, reversible underwater adhesion via gecko-inspired hydrophobic fibers. ACS APPLIED MATERIALS & INTERFACES 2014; 6:21995-22003. [PMID: 25454841 DOI: 10.1021/am5075375] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Strong, reversible underwater adhesion using gecko-inspired surfaces is achievable through the use of a hydrophobic structural material and does not require surface modification or suction cup effects for this adhesion to be effective. Increased surface energy can aid in dry adhesion in an air environment but strongly degrades wet adhesion via reduction of interfacial energy underwater. A direct comparison of structurally identical but chemically different mushroom shaped fibers shows that strong, reversible adhesion, even in a fully wetted, stable state, is feasible underwater if the structural material of the fibers is hydrophobic and the mating surface is not strongly hydrophilic. The exact adhesion strength will be a function of the underwater interfacial energy between surfaces and the specific failure modes of individual fibers. This underwater adhesion has been calculated to be potentially greater than the dry adhesion for specific combinations of hydrophobic surfaces.
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Affiliation(s)
- Babak Soltannia
- Department of Mechanical Engineering, University of Alberta , 4-9, Mechanical Engineering Building, Edmonton, Alberta T6G 2G8, Canada
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37
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Totani M, Ando T, Terada K, Terashima T, Kim IY, Ohtsuki C, Xi C, Kuroda K, Tanihara M. Utilization of star-shaped polymer architecture in the creation of high-density polymer brush coatings for the prevention of platelet and bacteria adhesion. Biomater Sci 2014; 2:1172-1185. [PMID: 25485105 PMCID: PMC4251873 DOI: 10.1039/c4bm00034j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate utilization of star-shaped polymers as high-density polymer brush coatings and their effectiveness to inhibit the adhesion of platelets and bacteria. Star polymers consisting of poly(2-hydroxyethyl methacrylate) (PHEMA) and/or poly(methyl methacrylate) (PMMA), were synthesized using living radical polymerization with a ruthenium catalyst. The polymer coatings were prepared by simple drop casting of the polymer solution onto poly(ethylene terephthalate) (PET) surfaces and then dried. Among the star polymers prepared in this study, the PHEMA star polymer (star-PHEMA) and the PHEMA/PMMA (mol. ratio of 71/29) heteroarm star polymer (star-H71M29) coatings showed the highest percentage of inhibition against platelet adhesion (78-88% relative to noncoated PET surface) and Escherichia coli (94-97%). These coatings also showed anti-adhesion activity against platelets after incubation in Dulbecco's phosphate buffered saline or surfactant solution for 7 days. In addition, the PMMA component of the star polymers increased the scratch resistance of the coating. These results indicate that the star-polymer architecture provides high polymer chain density on PET surfaces to prevent adhesion of platelets and bacteria, as well as coating stability and physical durability to prevent exposure of bare PET surfaces. The star polymers provide a simple and effective approach to preparing anti-adhesion polymer coatings on biomedical materials against the adhesion of platelets and bacteria.
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Affiliation(s)
- Masayasu Totani
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Tsuyoshi Ando
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Kayo Terada
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Takaya Terashima
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Ill Yong Kim
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Naogya 464-8603, Japan
| | - Chikara Ohtsuki
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Naogya 464-8603, Japan
| | - Chuanwu Xi
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Masao Tanihara
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
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38
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Kerstetter JL, Gramlich WM. Nanometer-scale self-assembly of amphiphilic copolymers to control and prevent biofouling. J Mater Chem B 2014; 2:8043-8052. [DOI: 10.1039/c4tb00961d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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39
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Zhan X, Zhang G, Zhang Q, Chen F. Preparation, surface wetting properties, and protein adsorption resistance of well-defined amphiphilic fluorinated diblock copolymers. J Appl Polym Sci 2014. [DOI: 10.1002/app.41167] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaoli Zhan
- Department of Chemical and Biological Engineering; Zhejiang University; Hangzhou Zhejiang 310027 People's Republic of China
| | - Guangfa Zhang
- Department of Chemical and Biological Engineering; Zhejiang University; Hangzhou Zhejiang 310027 People's Republic of China
| | - Qinghua Zhang
- Department of Chemical and Biological Engineering; Zhejiang University; Hangzhou Zhejiang 310027 People's Republic of China
| | - Fengqiu Chen
- Department of Chemical and Biological Engineering; Zhejiang University; Hangzhou Zhejiang 310027 People's Republic of China
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40
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41
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Yasani BR, Martinelli E, Galli G, Glisenti A, Mieszkin S, Callow ME, Callow JA. A comparison between different fouling-release elastomer coatings containing surface-active polymers. BIOFOULING 2014; 30:387-399. [PMID: 24579757 DOI: 10.1080/08927014.2013.878864] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Surface-active polymers derived from styrene monomers containing siloxane (S), fluoroalkyl (F) and/or ethoxylated (E) side chains were blended with an elastomer matrix, either poly(dimethyl siloxane) (PDMS) or poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS), and spray-coated on top of PDMS or SEBS preformed films. By contact angle and X-ray photoelectron spectroscopy measurements, it was found that the surface-active polymer preferentially populated the outermost layers of the coating, despite its low content in the blend. However, the self-segregation process and the response to the external environment strongly depended on both the chemistry of the polymer and the type of matrix used for the blend. Additionally, mechanical testing showed that the elastic modulus of SEBS-based coatings was one order of magnitude higher than that of the corresponding PDMS-based coatings. The coatings were subjected to laboratory bioassays with the marine alga Ulva linza. PDMS-based coatings had superior fouling-release properties compared to the SEBS-based coatings.
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Affiliation(s)
- B R Yasani
- a Dipartimento di Chimica e Chimica Industriale and UdR Pisa INSTM , Università di Pisa , Pisa , Italy
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42
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Hawkins ML, Faÿ F, Réhel K, Linossier I, Grunlan MA. Bacteria and diatom resistance of silicones modified with PEO-silane amphiphiles. BIOFOULING 2014; 30:247-258. [PMID: 24447301 DOI: 10.1080/08927014.2013.862235] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Silicone coatings with enhanced antifouling behavior towards bacteria, diatoms, and a diatom dominated slime were prepared by incorporating PEO-silane amphiphiles with varied siloxane tether lengths (a-c): α-(EtO)3Si(CH2)2-oligodimethylsiloxanen-block-poly(ethylene oxide)8-OCH3 [n = 0 (a), 4 (b), and 13 (c)]. Three modified silicone coatings (A-C) were prepared by the acid-catalyzed sol-gel cross-linking of a-c, respectively, each with a stoichiometric 2:3 M ratio of α, ω-bis(Si-OH)polydimethylsiloxane (Mn = 3,000 g mol(-1)). The coatings were exposed to the marine bacterium Bacillus sp.416 and the diatom (microalga) Cylindrotheca closterium, as well as a mixed community of Bacillus sp. and C. closterium. In addition, in situ microfouling was assessed by maintaining the coatings in the Atlantic Ocean. Under all test conditions, biofouling was reduced to the highest extent on coating C which was prepared with the PEO-silane amphiphile having the longest siloxane tether length (c).
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Affiliation(s)
- Melissa L Hawkins
- a Department of Biomedical Engineering , Texas A&M University , College Station , TX , USA
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43
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Zhu X, Guo S, Jańczewski D, Velandia FJP, Teo SLM, Vancso GJ. Multilayers of fluorinated amphiphilic polyions for marine fouling prevention. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:288-296. [PMID: 24328828 DOI: 10.1021/la404300r] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Sequential layer-by-layer (LbL) deposition of polyelectrolytes followed by chemical cross-linking was investigated as a method to fabricate functional amphiphilic surfaces for marine biofouling prevention applications. A novel polyanion, grafted with amphiphilic perfluoroalkyl polyethylene glycol (fPEG) side chains, was synthesized and subsequently used to introduce amphiphilic character to the LbL film. The structure of the polyanion was confirmed by FTIR and NMR. Amphiphilicity of the film assembly was demonstrated by both water and hexadecane static contact angles. XPS studies of the cross-linked and annealed amphiphilic LbL films revealed the increased concentration of fPEG content at the film interface. In antifouling assays, the amphiphilic LbL films effectively prevented the adhesion of the marine bacterium Pseudomonas (NCIMB 2021).
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Affiliation(s)
- Xiaoying Zhu
- Institute of Materials Research and Engineering A*STAR (Agency for Science, Technology and Research) , 3 Research Link Singapore 117602
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44
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Hawkins ML, Rufin MA, Raymond JE, Grunlan MA. Direct observation of the nanocomplex surface reorganization of antifouling silicones containing a highly mobile PEO-silane amphiphile. J Mater Chem B 2014; 2:5689-5697. [DOI: 10.1039/c4tb01008f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The water-driven, dynamic nanoscale reorganization of PEO-silane amphiphiles within a silicone matrix was directly observed via atomic force microscopy.
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Affiliation(s)
- Melissa L. Hawkins
- Texas A&M University
- Department of Biomedical Engineering
- Department of Materials Science and Engineering
- College Station, USA
| | - Marc A. Rufin
- Texas A&M University
- Department of Biomedical Engineering
- Department of Materials Science and Engineering
- College Station, USA
| | - Jeffery E. Raymond
- Texas A&M University
- Department of Chemistry
- Laboratory for Synthetic-Biologic Interactions
- College Station, USA
| | - Melissa A. Grunlan
- Texas A&M University
- Department of Biomedical Engineering
- Department of Materials Science and Engineering
- College Station, USA
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45
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Synthesis of Fluorinated Amphiphilic Block Copolymers Based on PEGMA, HEMA, and MMA via ATRP and CuAAC Click Chemistry. INT J POLYM SCI 2014. [DOI: 10.1155/2014/464806] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Synthesis of fluorinated amphiphilic block copolymers via atom transfer radical polymerization (ATRP) and Cu(I) catalyzed Huisgen 1,3-dipolar cycloaddition (CuAAC) was demonstrated. First, a PEGMA and MMA based block copolymer carrying multiple side-chain acetylene moieties on the hydrophobic segment for postfunctionalization was carried out. This involves the synthesis of a series of P(HEMA-co-MMA) random copolymers to be employed as macroinitiators in the controlled synthesis of P(HEMA-co-MMA)-block-PPEGMA block copolymers by using ATRP, followed by a modification step on the hydroxyl side groups of HEMA via Steglich esterification to afford propargyl side-functional polymer, alkyne-P(HEMA-co-MMA)-block-PPEGMA. Finally, click coupling between side-chain acetylene functionalities and 2,3,4,5,6-pentafluorobenzyl azide yielded fluorinated amphiphilic block copolymers. The obtained polymers were structurally characterized by1H-NMR,19F-NMR, FT-IR, and GPC. Their thermal characterizations were performed using DSC and TGA.
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46
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Al-Fori M, Dobretsov S, Myint MTZ, Dutta J. Antifouling properties of zinc oxide nanorod coatings. BIOFOULING 2014; 30:871-882. [PMID: 25115521 DOI: 10.1080/08927014.2014.942297] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In laboratory experiments, the antifouling (AF) properties of zinc oxide (ZnO) nanorod coatings were investigated using the marine bacterium Acinetobacter sp. AZ4C, larvae of the bryozoan Bugula neritina and the microalga Tetraselmis sp. ZnO nanorod coatings were fabricated on microscope glass substrata by a simple hydrothermal technique using two different molar concentrations (5 and 10 mM) of zinc precursors. These coatings were tested for 5 h under artificial sunlight (1060 W m(-2) or 530 W m(-2)) and in the dark (no irradiation). In the presence of light, both the ZnO nanorod coatings significantly reduced the density of Acinetobacter sp. AZ4C and Tetraselmis sp. in comparison to the control (microscope glass substratum without a ZnO coating). High mortality and low settlement of B. neritina larvae was observed on ZnO nanorod coatings subjected to light irradiation. In darkness, neither mortality nor enhanced settlement of larvae was observed. Larvae of B. neritina were not affected by Zn(2+) ions. The AF effect of the ZnO nanorod coatings was thus attributed to the reactive oxygen species (ROS) produced by photocatalysis. It was concluded that ZnO nanorod coatings effectively prevented marine micro and macrofouling in static conditions.
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Affiliation(s)
- Marwan Al-Fori
- a Department of Marine Science and Fisheries, College of Agricultural and Marine Sciences , Sultan Qaboos University , PO Box 17, Postal Code - 123, Al Khoud, Muscat , Sultanate of Oman
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47
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Yang W, Zhu L, Chen Y. Synthesis and characterization of core–shell latex: Effect of fluorinated acrylic monomer on properties of polyacrylates. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2013.11.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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Dimitriou MD, Kramer EJ, Hawker CJ. Advanced Techniques for the Characterization of Surface Structure in Polymer Thin Films and Coatings. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2013. [DOI: 10.1007/s13369-013-0916-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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49
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The interaction of marine fouling organisms with topography of varied scale and geometry: a review. Biointerphases 2013; 8:30. [DOI: 10.1186/1559-4106-8-30] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 11/04/2013] [Indexed: 11/10/2022] Open
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50
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Sterner O, Serrano Â, Mieszkin S, Zürcher S, Tosatti S, Callow ME, Callow JA, Spencer ND. Photochemically prepared, two-component polymer-concentration gradients. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:13031-13041. [PMID: 24059827 DOI: 10.1021/la402168z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A versatile, photochemical surface-modification approach using nitrene-insertion reactions has been employed to develop an ultrathin, two-component, polymer-gradient coating. Perfluorophenyl azide (PFPA) acted as the photosensitive moiety, forming a nitrene radical upon 254 nm UV exposure. Cationic poly(allyl amine) was grafted with PFPA and surface-anchored onto silicon wafers by means of electrostatic self-assembly. After spin-coating of polystyrene (PS), the substrate was illuminated from behind a moving shutter, thereby controlling the azide-to-nitrene conversion degree across the substrate, and leading to a gradually varying PS density after rinsing. Backfilling with poly(vinyl pyrrolidone) (PVP) and re-exposing to UV light formed a two-component polymer-density gradient. The composition varied linearly following exposure to a linear UV exposure profile, as determined with spectroscopic ellipsometry (ELM) and X-ray photoelectron spectroscopy (XPS). High-spatial-resolution, time-of-flight secondary ion mass spectrometry (ToF-SIMS) revealed a high degree of mixing between the two incompatible polymers on the micrometer scale. The dynamic water-contact angle (dCA) was found to depend strongly on the sample history, suggesting adaptive properties of the coating, which was further confirmed by angle-resolved XPS (ARXPS). To confirm the applicability of the system for biological investigations, gradients were exposed to zoospores of the macrofouling alga Ulva linza , and a critical PS composition of 70% was identified, above which settlement started to increase. It has been shown that a two-component polymer-density gradient can provide a high-throughput platform for determining critical surface properties of polymer blend materials.
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Affiliation(s)
- Olof Sterner
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich , Wolfgang-Pauli-Str. 10, CH-8093 Zurich, Switzerland
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