Novel reusable porous polyimide fibers for hot-oil adsorption

Tian, Lidong; Zhang, Chongyin; He, Xiaowei; Guo, Yue; Qiao, Mingtao; Gu, Junwei; Zhang, Qiuyu

doi:10.1016/j.jhazmat.2017.06.063

Cited by 43 publications

(17 citation statements)

References 52 publications

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“…The sorption capacity of the fibrous mats for motor oil was 60 g/g, which is approximately four times higher than the sorption capacity of commercially used polypropylene [13]. The considerably higher oil sorption capacity of the porous fibres can be attributed to their high specific surface area due to surface porosity as is previously reported [14]. The oil sorption mechanism for these electro spun CAB sorbents is deemed to be a combination of absorption, adsorption, and capillary action [15].…”

Section: Figure 2 Wettability Analysis Of the Porous Mat: (A) Optical Image Of Water Droplets On The Surface Of The Electrospun Mat (Watementioning

confidence: 56%

Nanoporous electrospun cellulose acetate butyrate nanofibres for oil sorption

2020

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Porous superhydrophobic nanofibrous networks based on cellulose acetate butyrate (CAB) were prepared using electrospinning. The morphology and wettability of the prepared fibrous networks was studied using scanning electron microscopy and static contact angle measurements. The porous nanofiber networks exhibited superhydrophobicity and superoleophilicity with a water contact angle of ~165° and an oil contact angle of ~0°. The porous nature of the nanofibres themselves is thought to lead to an increased surface area making them suitable for sorption applications.Due to their hydrophobic and oleophilic nature, they were tested for their oil sorption capacity. They demonstrated an oil sorption capacity of ~60 g/g for motor oil, which is four times that of commercially used polypropylene. The nanofibrous mats also demonstrated excellent reusability, retaining ~80% of their sorption capacity for up to 5 cycles of use.

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Section: Figure 2 Wettability Analysis Of the Porous Mat: (A) Optical Image Of Water Droplets On The Surface Of The Electrospun Mat (Watementioning

confidence: 56%

Nanoporous electrospun cellulose acetate butyrate nanofibres for oil sorption

2020

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“…Herein, the ceramic nanostructure is made by the electrospinning of ceramic precursors in the presence of polymer followed by calcination at higher temperatures. In order to produce well-controlled and high-quality ceramic nanofibrous structures by electrospinning, one typically process is used with the following procedures: (1) preparing an electrospinning solution containing a polymer and sol–gel precursor to the ceramic material; (2) electrospinning the solution under suitable conditions, generate precursor nanostructure-containing inorganic precursor, and polymer-assistant materials; and (3) calcining the precursor nanostructure at high temperature to remove the polymer and obtain the ceramic phase [91–99].…”

Section: Piezoelectric Nanofibers and Nwsmentioning

confidence: 99%

A review on piezoelectric fibers and nanowires for energy harvesting

Zaarour

Zhu

Huang

et al. 2019

Journal of Industrial Textiles

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Recent advances in self-powered electronic devices have urged the development of energy-harvesting technology. Batteries are gradually unable to satisfy the practical requirements for powering the different types of microelectronic devices owing to their drawbacks such as occupying a significant percentage and weight of portable products, the need to replace or recharge them, constructing an important environmental impact, and the probable seepage of electrolyte solutions. Various technologies for converting renewable energies into electricity have been reported. Particularly, energy harvesters based on piezoelectricity to convert mechanical energy into usable electricity have received considerable attention. Electrospun fibers from piezoelectric polymers and inorganic nanowires as emerging piezoelectric materials have shown great potential for energy-harvesting applications. This review paper summarizes energy-harvesting technology based on piezoelectric polymeric fibers, inorganic piezoelectric fibers, and inorganic nanowires. A comprehensive overview of fundamentals of piezoelectric effect, types of piezoelectric materials, energy harvesting from fibers, energy harvesting from inorganic nanowires, and energy harvesting from polymeric/inorganic fibers and nanowires composites are discussed.

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“…Natural [ 14 ] and synthetic polymer-based [ 6 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ] fibrous membranes show good water purification and oil sorption capacity, buoyancy and resistance to rot and mildew [ 25 , 26 ]. Chemically inert polymer-based fibrous membranes with large surface areas and hierarchical porosity, which are beneficial for liquid sorption [ 27 , 28 ], can be easily produced via electrospinning, a cost-effective and scalable top-down technique [ 10 , 19 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ]. Compared to the low-cost melt-blown membranes [ 40 ], the electrospun supports show greater re-usability in filtration applications.…”

Section: Introductionmentioning

confidence: 99%

“…Compared to the low-cost melt-blown membranes [ 40 ], the electrospun supports show greater re-usability in filtration applications. Several polymers, such as polystyrene [ 10 ], polyimide [ 27 ] and polyvinylpyrrolidone [ 41 ], have been evaluated for the production of sorbent membranes.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Electrospun Self-Supporting Paper-Like Fibrous Membranes as Oil Sorbents

et al. 2021

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Presently, adsorption/absorption is one of the most efficient and cost-effective methods to clean oil spill up. In this work, self-supporting paper-like fibrous membranes were prepared via electrospinning and carbonisation at different temperatures (500, 650 or 800 °C) by using polyacrylonitrile/polymethylmethacrylate blends with a different mass ratio of the two polymers (1:0, 6:1 or 2:1). After morphological and microstructural characterisation, the as-produced membranes were evaluated as sorbents by immersion in vegetable (sunflower seed or olive) and mineral (motor) oil or in 1:4 (v:v) oil/water mixture. Nitrogen-rich membrane carbonised at the lowest temperature behaves differently from the others, whose sorption capacity by immersion in oil, despite the great number of sorbent and oil properties involved, is mainly controlled by the fraction of micropores. The encapsulation of water nanodroplets by the oil occurring during the immersion in oil/water mixture causes the oil-from-water separation ability to show an opposite behaviour compared to the sorption capacity. Overall, among the investigated membranes, the support produced with 2:1 mass ratio of the polymers and carbonisation at 650 °C exhibits the best performance both in terms of sorption capacity (73.5, 54.8 and 12.5 g g−1 for olive, sunflower seed and motor oil, respectively) and oil-from-water separation ability (74, 69 and 16 for olive, sunflower seed and motor oil, respectively).

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Novel reusable porous polyimide fibers for hot-oil adsorption

Cited by 43 publications

References 52 publications

Nanoporous electrospun cellulose acetate butyrate nanofibres for oil sorption

Nanoporous electrospun cellulose acetate butyrate nanofibres for oil sorption

A review on piezoelectric fibers and nanowires for energy harvesting

Evaluation of Electrospun Self-Supporting Paper-Like Fibrous Membranes as Oil Sorbents

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