Fabrication of hollow and porous polystyrene fibrous membranes by electrospinning combined with freeze‐drying for oil removal from water

Tang, Yufei; Liu, Zhaowei; Zhao, Kang

doi:10.1002/app.47262

Cited by 24 publications

(22 citation statements)

References 43 publications

(49 reference statements)

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“…Phase separation (e. g. thermally induced (TIPS) and vapor induced phase separation (VIPS)) is another method for producing porous fibers . Highly volatile solvents such as dichloromethane (DCM), acetone (ACE), tetrahydrofuran (THF), and chloroform, has the ability to generate porous fibers from various polymers such as polyvinylidene fluoride (PVDF), poly(vinyl chloride) (PVC), poly(methyl methacrylate) (PMMA), poly(L‐lactic acid) (PLLA), polystyrene (PS), poly(D,L‐lactide), poly(ϵ‐caprolactone), poly(vinyl acetate) (PVA), polycarbonate, polyvinyl butyral (PVB), ethylcellulose, polymethylsilsesquioxane, cellulose triacetate, and polyvinyl carbazole . Commonly, pores are created on the electrospun fibers’ surfaces due to TIPS.…”

Section: Secondary Surface Morphologies Of Electrospun Nanofibersmentioning

confidence: 99%

A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

2020

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Engineering the secondary surface morphology of fibers (fibers without smooth surface and solid interior) has been attracting significant awareness in various areas and applications. Among different methods of forming nanofibers, electrospinning is the most widely adopted technique due to the ease of forming fibers with a broad range of properties and its unique advantages such as the flexibility to spin into a variety of shapes and sizes as well as adjustable porosity of electrospun structures. In this review paper, more emphasis is put on the secondary surface morphology. A comprehensive overview of the basic principles about the electrospinning process, types of electrospinning, materials, formation mechanisms, characterizations, and applications of electrospun fibers with the secondary surface morphology (e. g. the porous structure, grooved structure, wrinkled structure, rough structure, cactus structure, and hollow structure) are discussed in detail. Importantly, we believe our work can serve as guidelines for the preparations, characterizations, and applications of electrospun fibers with the secondary surface morphology.

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Section: Secondary Surface Morphologies Of Electrospun Nanofibersmentioning

confidence: 99%

A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

2020

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“…Other interesting approach can be found in [47] where a novel method is proposed to fabricate hollow and surface porous PS fibrous membranes for the removal of oil from water. In this work, the spinning solutions were prepared by using camphene and tetraethoxysilane (TEOS) as pore-forming agents, and as a result, hollow PS fibers with 100-400 nm pores on the surface have been obtained by electrospinning and freeze-drying, being this type of membrane a great alternative and promising tool for oil of spill cleanups.…”

Section: Design Of Superhydrophobic Surfaces Obtained By Electrospun mentioning

confidence: 99%

Electrospinning Technique as a Powerful Tool for the Design of Superhydrophobic Surfaces

Rivero¹,

Vicente²,

Rodríguez³

2020

21st Century Surface Science - A Handbook

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The development of surface engineering techniques to tune-up the composition, structure, and function of materials surfaces is a permanent challenge for the scientific community. In this chapter, the electrospinning process is proposed as a versatile technique for the development of highly hydrophobic or even superhydrophobic surfaces. Electrospinning makes possible the fabrication of nanostructured ultrathin fibers, denoted as electrospun nanofibers (ENFs), from a wide range of polymeric materials that can be deposited on any type of surface with arbitrary geometry. In addition, by tuning the deposition parameters (mostly applied voltage, flow rate, and distance between collector/needle) in combination with the chemical structure of the polymeric precursor (functional groups with hydrophobic behavior) and its resultant viscosity, it is possible to obtain nanofibers with highly porous surface. As a result, functionalized surfaces with water-repellent behavior can be implemented in a wide variety of industrial applications such as in corrosion resistance, high efficient water-oil separation, surgical meshes in biomedical applications, or even in energy systems for long-term efficiency of dye-sensitized solar cells, among others.

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“…16 Polystyrene can be easily prepared into ultrafine fibers as the supporting matrices and nanofiltration mat. [17][18][19] However, cross-linking of polystyrene molecules inside the fibers are essential to improve solvent resistance because the linear polystyrene resin is soluble in many organic solvents (e.g., chloroform, tetrahydrofuran and N,N-dimethylformamide). However, conventional porous polystyrene resins are usually cross-linked in the polymerization stage with divinylbenzene as the cross-linking agent, which is impossible for the crosslinking of polystyrene molecules in fibers.…”

Section: Introductionmentioning

confidence: 99%

Sulfonated and cross‐linked polystyrene ultrafine fibers for the esterification of palmitic acid for biodiesel production

Shao

2020

J of Applied Polymer Sci

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For the need of green and sustainable development, a fibrous solid acid catalyst was developed for the transformation of low cost oils to biodiesel in an efficient and green manner. Polystyrene was electrospun into ultrafine fibers with mean diameter of~1.34 μm, and then simultaneously cross-linked and sulfonated in sulfuric acid/acetic acid mixed solvent with paraformaldehyde as the external cross-linker. The cross-linking and sulfonation degrees were controllable by changing the ratio of sulfuric acid/acetic acid. After sulfonation and cross-linking, the solvent resistance, chemical structure, and composition of these fibers were separately characterized by scanning electron microscopy, infrared spectroscopy, and elemental analysis. At last, this novel fibrous solid acid catalyst was used to catalyze the esterification reaction of palmitic acid and methanol for biodiesel production. After optimizing the reaction conditions, this fibrous solid acid catalyst can catalyze the esterification of palmitic acid and methanol with the conversion up to 92% under mild reaction conditions. Moreover, due to the fibrous structure, this fibrous solid acid catalyst could be readily separated and reused.

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Fabrication of hollow and porous polystyrene fibrous membranes by electrospinning combined with freeze‐drying for oil removal from water

Cited by 24 publications

References 43 publications

A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

Electrospinning Technique as a Powerful Tool for the Design of Superhydrophobic Surfaces

Sulfonated and cross‐linked polystyrene ultrafine fibers for the esterification of palmitic acid for biodiesel production

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