Electrospinning Superhydrophobic and Antibacterial PS/MWNT Nanofibers onto Multilayer Gas Barrier Films

Tiu, Brylee David B.; Nguyen, Hang N.; Rodrigues, Débora F.; Advíncula, Rigoberto C.

doi:10.1002/masy.201600138

Cited by 12 publications

(3 citation statements)

References 39 publications

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“…On the one hand, a large quantity of gas adsorptive sites is available to enhance separation performance, but on the other, the great Van de Waals forces generated by the large surface of contact led to self-aggregation of the nanofillers [81,157,158]. This issue is especially prominent with fibrous or tubular nanofillers such as CNT [159,160], carbon nanofiber (CNF) [161] and CNC [162], due to their high aspect ratio and tendency to intertwine among themselves. To this end, functionalization of nanofiller is most straightforward and effective approach to overcome the aggregation issues.…”

Section: Functionalization Of Nanofillermentioning

confidence: 99%

The State-of-the-Art Functionalized Nanomaterials for Carbon Dioxide Separation Membrane

et al. 2022

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Nanocomposite membrane (NCM) is deemed as a practical and green separation solution which has found application in various fields, due to its potential to delivery excellent separation performance economically. NCM is enabled by nanofiller, which comes in a wide range of geometries and chemical features. Despite numerous advantages offered by nanofiller incorporation, fabrication of NCM often met processing issues arising from incompatibility between inorganic nanofiller and polymeric membrane. Contemporary, functionalization of nanofiller which modify the surface properties of inorganic material using chemical agents is a viable approach and vigorously pursued to refine NCM processing and improve the odds of obtaining a defect-free high-performance membrane. This review highlights the recent progress on nanofiller functionalization employed in the fabrication of gas-separative NCMs. Apart from the different approaches used to obtain functionalized nanofiller (FN) with good dispersion in solvent and polymer matrix, this review discusses the implication of functionalization in altering the structure and chemical properties of nanofiller which favor interaction with specific gas species. These changes eventually led to the enhancement in the gas separation efficiency of NCMs. The most frequently used chemical agents are identified for each type of gas. Finally, the future perspective of gas-separative NCMs are highlighted.

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Section: Functionalization Of Nanofillermentioning

confidence: 99%

The State-of-the-Art Functionalized Nanomaterials for Carbon Dioxide Separation Membrane

et al. 2022

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“…The authors performed a peeling test with a sellotape to evaluate the mechanical durability of the coating. [ 9 ] Particularly, the Advincula group has reported multifunctional fluorine‐free superhydrophobic coatings based on different chemistries, including rubber‐modified polybenzoxazine, [ 12 ] poly(N‐isopropylacrylamide), [ 22 ] polystyrene/multiwalled carbon nanotubes, [ 23 ] and electrodeposited polythiopenes. [ 4,24–27 ]…”

Section: Introductionmentioning

confidence: 99%

Fluorine‐Free Superhydrophobic Coatings: Rapid Fabrication and Highly Efficient Oil/Water Separation

Silva

Lucas

Advíncula

2020

Macro Materials & Eng

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In this work, a rapid method is demonstrated to obtain a fluorine‐free superhydrophobic/superoleophilic coating by a simple two‐step method: dip‐coating and oven curing. The chemical structure of the coating is based on the crosslinking reaction of an alkyl methacrylate, a dimethacrylate (crosslinker) and a silane (adhesive), using AIBN as initiator, toluene as solvent, and silica nanoparticles to enhance surface roughness. Chemorheology results show that the coating is fully cured even in 20 min at 100 °C, exhibiting a water contact angle (CA) of 162 ± 2°, sliding angle (SA) of 4 ± 1°, nanometrical structures throughout the surface, and excellent adhesion properties for the mesh screen. The coating exhibits outstanding oil/water separation efficiency (96–99%) for seven different types of oil (gasoline, diesel, petroleum ether, hexane, toluene, chloroform, and dichloromethane), and in addition presents high recyclability. Based on nonisothermal TGA, the activation energy of degradation, calculated using the Kissinger and Ozawa models, is 113.5 and 114 kJ mol‐1, respectively. Finally, the coating is thermally aged at 150 °C: the CA exhibits a smooth decrease up to 129 ± 1° at 120 min, and FTIR analysis shows structural changes possibly related to the generation of thermal oxidation products.

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“…Porous structure and roughness of randomly collected nanofibres contribute to the superhydrophobity of the electrospun membranes. Some of the most popular polymers explored for electrospinning to obtain superhydrophobic surfaces are poly(vinylidene fluoride), poly(styrene) and poly(sulfone) . However, the hydrophobic behavior of these polymers is not enough to achieve superhydrophobicity, therefore they were mostly integrated with nanofillers, bead on string structures or via subsequent surface modification techniques.…”

Section: Introductionmentioning

confidence: 99%

One‐step fabrication of superhydrophobic P(VDF‐co‐HFP) nanofibre membranes using electrospinning technique

Taş

Ahmed

et al. 2019

J of Applied Polymer Sci

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In this study, superhydrophobic electrospun P(VDF‐co‐HFP) membranes were fabricated in a one‐step electrospinning process. The effects of the key parameters of electrospinning (solution concentration, electrical potential, flow rate, and solvent) on the surface roughness, fiber formation, and hydrophobicity of the membranes were evaluated using Taguchi method. A 4 × 3 orthogonal array was utilized, and the results indicated that the solvent played the critical role in producing the superhydrophobic nanofibre membranes. It was demonstrated that it is possible to produce superhydrophobic membranes with P(VDF‐co‐HFP) without additional functionalisation and fillers. The highest water contact angle and the lowest contact angle hysteresis obtained were 156° and 5°, respectively, and the roughness values varied from 0.15 to 5.74 μm for the produced P(VDF‐co‐HFP) nanofibre membranes. The surface superhydrophobicity of the membranes was attributed to the specific structures consisting of a combination of beads and nanofibres. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48817.

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Electrospinning Superhydrophobic and Antibacterial PS/MWNT Nanofibers onto Multilayer Gas Barrier Films

Cited by 12 publications

References 39 publications

The State-of-the-Art Functionalized Nanomaterials for Carbon Dioxide Separation Membrane

The State-of-the-Art Functionalized Nanomaterials for Carbon Dioxide Separation Membrane

Fluorine‐Free Superhydrophobic Coatings: Rapid Fabrication and Highly Efficient Oil/Water Separation

One‐step fabrication of superhydrophobic P(VDF‐co‐HFP) nanofibre membranes using electrospinning technique

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