Superhydrophobic PVDF and PVDF-HFP nanofibrous mats with antibacterial and anti-biofouling properties

Spasova, Mariya; Manolova, Nevena; Маркова, Н.; Rashkov, Iliya

doi:10.1016/j.apsusc.2015.12.049

Cited by 93 publications

(44 citation statements)

References 38 publications

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“…With the release of silver ions from the material, they showed activity against Gram-positive and Gram-negative bacteria. Spasova et al [183] manufactured nanofiber meshes composed of poly(vinylidene fluoride) or poly(vinylidene fluoride- co -hexafluoropropylene) containing ZnO nanoparticles or the antibacterial drug 5-chloro-8-hydroxyquinolinol (5Cl8HQ). The ZnO-loaded meshes exhibited contact angles >150° and suppressed S. aureus growth over 24 hours compared to the unloaded meshes.…”

Section: Bacterial Interactionsmentioning

confidence: 99%

Superhydrophobic materials for biomedical applications

et al. 2016

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Superhydrophobic surfaces are actively studied across a wide range of applications and industries, and are now finding increased use in the biomedical arena as substrates to control protein adsorption, cellular interaction, and bacterial growth, as well as platforms for drug delivery devices and for diagnostic tools. The commonality in the design of these materials is to create a stable or metastable air state at the material surface, which lends itself to a number of unique properties. These activities are catalyzing the development of new materials, applications, and fabrication techniques, as well as collaborations across material science, chemistry, engineering, and medicine given the interdisciplinary nature of this work. The review begins with a discussion of superhydrophobicity, and then explores biomedical applications that are utilizing superhydrophobicity in depth including material selection characteristics, in vitro performance, and in vivo performance. General trends are offered for each application in addition to discussion of conflicting data in the literature, and the review concludes with the authors’ future perspectives on the utility of superhydrophobic surfaces for biomedical applications.

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Section: Bacterial Interactionsmentioning

confidence: 99%

Superhydrophobic materials for biomedical applications

et al. 2016

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“…Two of the most important factors governing the wettability of materials are surface energy and surface roughness, with hierarchical micro/nanostructures and low surface-energy materials being essential in achieving superhydrophobicity. [1,15] Various methods have been explored to fabricate superhydrophobic surfaces, such as inorganic nanoparticle surface coatings, [16] electrochemical polymerization, [17] plasma-etching, [18] template/mold methods, [19] electrospinning [1,[20][21][22][23][24][25] and others. [26] Electrospinning is a relatively simple, efficient and versatile way to fabricate continuous fibers from a variety of materials for wide ranging applications.…”

Section: Introductionmentioning

confidence: 99%

Rinse-resistant superhydrophobic block copolymer fabrics by electrospinning, electrospraying and thermally-induced self-assembly

Yang

et al. 2017

Applied Surface Science

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An inherent problem that restricts the practical application of superhydrophobic materials is that the superhydrophobic property is not sustainable; it can be diminished, or even lost, when the surface is physically damaged. In this work, we present an efficient approach for the fabrication of superhydrophobic fibrous fabrics with great rinse-resistance where a block copolymer has been electrospun into a nanofibrous mesh while micro-sized beads have been subsequently electrosprayed to give a morphologically composite material. The intricate nanoand microstructure of the composite was then fixed by thermally annealing the block copolymer to induce self-assembly and interdigitation of the microphase separated domains. To demonstrate this approach, a polystyrene-b-poly(ethylene-co-butylene)-b-polystyrene (SEBS) nanofibrous scaffold was produced by electrospinning before SEBS beads were electrosprayed into this mesh to form a hierarchical micro/nanostructure of beads and fibers. The effects of type and density of SEBS beads on the surface morphology and wetting properties of composite membranes were studied extensively. Compared with a neat SEBS fibrous mesh, the composite membrane had enhanced hydrophobic properties. The static water contact angle increased from 139° (±3°) to 156° (±1°), while the sliding angle decreased to 8° (±1°) from nearly 90°. In order to increase the rinse-resistance of the composite membrane, a thermal annealing step was applied to physically bind the fibers and beads. Importantly, after 200 hours of water flushing, the hierarchical surface structure and superhydrophobicity of the composite membrane were well retained. This work provides a new route for the creation of superhydrophobic fabrics with potential in self-cleaning applications.

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“…Therefore, many studies have been devoted to the utilization of PVDF‐HFP and its corresponding nanocomposites in a diverse range of scientific fields and applications. For instance, the nanofibrous mats of PVDF‐HFP were prepared by Spasova et al In another work, García‐Fernández et al investigated the effect of PVDF‐HFP hollow fiber structure on the separation of mixed solvents . Singh and co‐workers developed a conductive membrane using PVDF‐HFP and an ionic liquid .…”

Section: Introductionmentioning

confidence: 99%

Influence of Graphene Oxide on Crystallization Behavior and Chain Folding Surface Free Energy of Poly(vinylidenefluoride‐co‐hexafluoropropylene)

Choolaei

Goodarzi

Khonakdar

et al. 2017

Macro Chemistry & Physics

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Graphene oxide (GO) filled poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HPF) copolymer nanocomposites as promising piezoelectric materials are developed, and their crystallization behavior and chain folding free energy are examined. Appropriate distribution of GO nanoparticles in the copolymer is confirmed by transmission electron microscopic analysis. The crystalline structure of nanocomposites is analyzed by wide‐angle X‐ray scattering and Fourier transform infrared spectroscopy. The results show an increase in the β‐phase content of PVDF‐HPF copolymer in the presence of GO. Non‐isothermal crystallization kinetics of the neat polymer and corresponding nanocomposites are studied by a multiple heating rate differential scanning calorimetry using modified Avrami–Jeziorny and Liu models. Moreover, barrier energy of crystallization is calculated by Friedman and Kissinger models. It is found that addition of GO to the copolymer increases nucleation activity of the nanocomposites. Investigation on linear crystal growth via Hoffman's theorem indicates an enhanced nucleation activity upon increasing GO content. The surface folding free energy of the neat polymer is changed from 5.79 × 10−2 to 7.27 × 10−2 J m−2 upon addition of 5 wt% of GO. A bundle‐like mechanism is proposed, which can explain the crystallite growth. Analysis based on Vyazovkin theorem reveals that the crystallization activation energy is independent of GO at elevated temperatures.

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Superhydrophobic PVDF and PVDF-HFP nanofibrous mats with antibacterial and anti-biofouling properties

Cited by 93 publications

References 38 publications

Superhydrophobic materials for biomedical applications

Superhydrophobic materials for biomedical applications

Rinse-resistant superhydrophobic block copolymer fabrics by electrospinning, electrospraying and thermally-induced self-assembly

Influence of Graphene Oxide on Crystallization Behavior and Chain Folding Surface Free Energy of Poly(vinylidenefluoride‐co‐hexafluoropropylene)

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