Zwitterionic Nanofibers of Super-Glue for Transparent and Biocompatible Multi-Purpose Coatings

Mele, Elisa; Heredia‐Guerrero, José A.; Bayer, Ilker S.; Ciofani, Gianni; Genchi, Giada Graziana; Ceseracciu, Luca; Davis, Alexander; Papadopoulou, Evie L.; Barthel, Markus J.; Marini, Lara; Ruffilli, Roberta

doi:10.1038/srep14019

Cited by 33 publications

(38 citation statements)

References 56 publications

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“…Mele et al found that macrozwitterions of poly(ethyl 2‐cyanoacrylate), could easily assemble into long and well defined fibers, and then formed fibrous networks after being thermally treated on glass to create transparent coatings with low liquid adhesion and anti‐staining performance. Moreover, the low friction coefficient and excellent scratch resistance became a bright spot as solid lubricants, which could be benefit for water‐harvesting, such as slippery surfaces made with bio‐based nanofibers …”

Section: The Fabrication and Further Fundamental Research Of Bionic Wmentioning

confidence: 99%

Bioinspired Special Wettability Surfaces: From Fundamental Research to Water Harvesting Applications

Zhang

Huang

Chen

et al. 2016

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Nowadays, the pollution of water has become worse in many parts of the world, which causes a severe shortage of clean water and attracts widespread attention worldwide. Bioinspired from nature, i.e. spider silk, cactus, Namib desert beetle, Nepenthes alata, special wettability surfaces have attracted great interest from fundamental research to water-harvesting applications. Here, recently published literature about creatures possessing water-harvesting ability are reviewed, with a focus on the corresponding water-harvesting mechanisms of creatures in dry or arid regions, consisting of the theory of wetting and transporting. Then a detailed account of the innovative fabrication technologies and bionic water-harvesting materials with special wetting are summarized, i.e. bio-inspired artificial spider silk, bio-inspired artificial cactus-like structures, and bio-inspired artificial Namib desert beetle-like surfaces. Special attentions are paid to the discussion of the advantages and disadvantages of the technologies, as well as factors that affect the amount of water-harvesting. Finally, conclusions, future outlooks and the current challenges for future development of the water-harvesting technology are presented and discussed.

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Section: The Fabrication and Further Fundamental Research Of Bionic Wmentioning

confidence: 99%

Bioinspired Special Wettability Surfaces: From Fundamental Research to Water Harvesting Applications

Zhang

Huang

Chen

et al. 2016

Small

293

204

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“…In other words, zones damaged by the 2B pencil abrasion lost their superhydrophobic state (static water contact angles were reduced to 140–145°), but nonetheless, 10 μL droplets still slid off these damaged surfaces with negligible contact angle hysteresis at tilt angles close to 40°. Such kind of self-cleaning hydrophobic surfaces (slippery hydrophobic surfaces) exist in nature such as the skin of Nabib beetle (stenocara gracilipes) that recently inspired the design fog harvesting surfaces4445.…”

Section: Resultsmentioning

confidence: 99%

Thermal Alternating Polymer Nanocomposite (TAPNC) Coating Designed to Prevent Aerodynamic Insect Fouling

Bayer¹,

Krishnan²,

Robison³

et al. 2016

Sci Rep

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Insect residue adhesion to moving surfaces such as turbine blades and aircraft not only causes surface contamination problems but also increases drag on these surfaces. Insect fouling during takeoff, climb and landing can result in increased drag and fuel consumption for aircraft with laminar-flow surfaces. Hence, certain topographical and chemical features of non-wettable surfaces need to be designed properly for preventing insect residue accumulation on surfaces. In this work, we developed a superhydrophobic coating that is able to maintain negligible levels of insect residue after 100 high speed (50 m/s) insect impact events produced in a wind tunnel. The coating comprises alternating layers of a hydrophobic, perfluorinated acrylic copolymer and hydrophobic surface functional silicon dioxide nanoparticles that are infused into one another by successive thermal treatments. The design of this coating was achieved as a result of various experiments conducted in the wind tunnel by using a series of superhydrophobic surfaces made by the combination of the same polymer and nanoparticles in the form of nanocomposites with varying surface texture and self-cleaning hydrophobicity properties. Moreover, the coating demonstrated acceptable levels of wear abrasion and substrate adhesion resistance against pencil hardness, dry/wet scribed tape peel adhesion and 17.5 kPa Taber linear abraser tests.

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“…Figure 2a shows the ATR-FTIR spectra of pure PPF, pure OCA monomer, the gel resultant from the combination of OCA and dimethylacetamide (DMAc) (for the promotion of polymerization of OCA, resulting in gel formation, it was mixed with DMAc induced by nucleophilic substances such as DMAc, has been previously documented. [29,40] Finally, the composite nanofibers are characterized by absorptions of POCA (in this case, it is observed an additional vibration at 1252 cm -1 related to saturated C-O-C stretch, masked in the gel sample by DMAc bands) and PPF without traces of solvents. The principle spectral differences between the composite nanofibers and the PPF and POCA samples were located in the region of C=O stretch of ester groups (figure 2b).…”

Section: Electrospun Fibers Characterizationmentioning

confidence: 99%

“…[29] Skin samples (n= 5 per group) were homogenized in potassium phosphate buffer (1 mL, 5 mM, pH 6) and then centrifuged at 21000 rpm for 30 min at 4 °C. The supernatants were discarded, and the pellets were washed again as described above.…”

Section: Myeloperoxidase Assaymentioning

confidence: 99%

Fumarate-loaded electrospun nanofibers with anti-inflammatory activity for fast recovery of mild skin burns

et al. 2016

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In the biomedical sector the availability of engineered scaffolds and dressings that control and reduce inflammatory states is highly desired, particularly for the management of burn wounds. In this work, we demonstrate for the first time, to the best of our knowledge, that electrospun fibrous dressings of poly(octyl cyanoacrylate) (POCA) combined with polypropylene fumarate (PPF) possess anti-inflammatory activity and promote the fast and effective healing of mild skin burns in an animal model. The fibers produced had an average diameter of (0.8 ± 0.1) µm and they were able to provide a conformal coverage of the injured tissue. The application of the fibrous mats on the burned tissue effectively reduced around 80% of the levels of pro-inflammatory cytokines in the first 48 h in comparison with un-treated animals, and enhanced skin epithelialization. From histological analysis, the skin thickness of the animals treated with POCA : PPF dressings appeared similar to that of one of the naïve animals: (13.7 ± 1.4) µm and (14.3 ± 2.5) µm for naïve and treated animals, respectively. The density of dermal cells was comparable as well: (1100 ± 112) cells mm−2 and (1358 ± 255) cells mm−2 for naïve and treated mice, respectively. The results demonstrate the suitability of the electrospun dressings in accelerating and effectively promoting the burn healing process.

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Zwitterionic Nanofibers of Super-Glue for Transparent and Biocompatible Multi-Purpose Coatings

Cited by 33 publications

References 56 publications

Bioinspired Special Wettability Surfaces: From Fundamental Research to Water Harvesting Applications

Bioinspired Special Wettability Surfaces: From Fundamental Research to Water Harvesting Applications

Thermal Alternating Polymer Nanocomposite (TAPNC) Coating Designed to Prevent Aerodynamic Insect Fouling

Fumarate-loaded electrospun nanofibers with anti-inflammatory activity for fast recovery of mild skin burns

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