Fabrication and chemical crosslinking of electrospun trans-polyisoprene nanofiber nonwoven

Nie, Huarong; Wang, Chao; He, Aihua

doi:10.1007/s10118-016-1796-2

Cited by 13 publications

(6 citation statements)

References 34 publications

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“…Electrospinning is one of the most simple and versatile methods that can produce fibrous membranes composed of fibers with diameters ranging from a few nanometers to micrometers [19][20][21][22]. Electrospun nanofiber membranes have unique and interesting features for oil-water separation such as high surface area to volume ratio, large porosity, interconnected pore structure, flexibility in surface functionalities and good water permeability which is attractive [23][24][25][26][27]. Hence, electrospun fibrous membranes were found to have high separation capacity, high selectivity and stable performance for oil-water separation applications.…”

Section: Introductionmentioning

confidence: 99%

Polyimide/cellulose acetate core/shell electrospun fibrous membranes for oil-water separation

Guo

Zhao

et al. 2017

Separation and Purification Technology

165

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In recent years, efficient, cost effective oil-water separation technologies are highly desired due to frequent oil spill accidents. To design fibrous membranes for efficient oil-water separation, 'flexible' polyamide acid (PAA), being polyamide acid with ether linkages in the backbone, and 'heavily' fluorinated polybenzoxazine (F-PB) were synthesized. Cellulose acetate (CA) and PAA were co-axially electrospun; the PAA core was then imidizated at high temperature to obtain core/shell structured CA/polyimide (PI) electrospun fibrous 2 membranes; subsequently the surface of the fibers was modified with F-PB， in the presence or in absence of silica nanoparticles (SNPs). The mechanical strength, surface wettability, chemical and thermal stability, and oil-water separation potential of thus obtained PI/CA fibrous membranes were evaluated. The membranes show a much higher critical tensile stress (130 MPa) and critical tensile strain (52%), when compared with CA fibrous membranes. Due to the use of the 'heavily' fluorinated polybenzoxazine, the membranes are superhydrophobic with a water contact angle of 162 o and an oil contact angle which approaches 0 o. Interestingly, the newly designed PI/CA/F-PB-1/SNP-4 membranes can effectively separate various oil-water mixtures, solely driven by gravity, with a high flux (3106.2 ± 100 L•m-2 •h-1) and a high separation efficiency (> 99%) and thus possess great potential for oil-water separation.

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Section: Introductionmentioning

confidence: 99%

Polyimide/cellulose acetate core/shell electrospun fibrous membranes for oil-water separation

Guo

Zhao

et al. 2017

Separation and Purification Technology

165

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“…EUR nanofibers with diameters of 100−1000 nm and EUR membranes are prepared by using electro-spinning 183 with parameters including the dope concentration of 3−10 g/mL, the applied voltage of 15−30 kV, the tip-to-collector distance of 10−20 cm, the feeding rate of 20−80 μL/min, the temperature of 25−45 °C, etc. 184 In the past decades, EUR-based biomaterials have received significant attention. As shown in Figure 12, functional EUR materials have been applied in various fields.…”

Section: Fabrication and Potential Applications Ofmentioning

confidence: 99%

“…EUR nanofibers with diameters of 100–1000 nm and EUR membranes are prepared by using electro-spinning with parameters including the dope concentration of 3–10 g/mL, the applied voltage of 15–30 kV, the tip-to-collector distance of 10–20 cm, the feeding rate of 20–80 μL/min, the temperature of 25–45 °C, etc …”

Section: Fabrication and Potential Applications Of Eucommia Ulmoides ...mentioning

confidence: 99%

Natural Polymer Eucommia Ulmoides Rubber: A Novel Material

Wei

Peng

et al. 2021

J. Agric. Food Chem.

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As the second natural rubber resource, Eucommia ulmoides rubber (EUR) from Eucommia ulmoides Oliver is mainly composed of trans-1,4-polyisoprene, which is the isomer of natural rubber cis-1,4-polyisoprene from Hevea brasiliensis. In the past few years, the great potential application of EUR has received increasing attention, and there is a growing awareness that the natural polymer EUR could become an emerging research topic in field of the novel materials due to its unique and excellent duality of both rubber and plastic. To gain insight into its further development, in this review, the extraction, structure, physicochemical properties, and modification of EUR are discussed in detail. More emphasis on the potential applications in the fields of the environment, agriculture, engineering, and biomedical engineering is summarized. Finally, some insights into the challenges and perspectives of EUR are also suggested.

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“…The method of electrospinning is a widely used method of producing nanofibres [47][48][49][50][51]. It is a process of obtaining fibres from molten polymers or their solutions using high voltage.…”

Section: Properties Of Nano Fibre Filtration Materialsmentioning

confidence: 99%

Material Properties Analysis with Addition of Nanofibres for Air Intake Filtration in Internal Combustion Engines

Dziubak¹

2021

IJAME

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The aim of this study is to provide an experimental properties evaluation of a standard filter material (cellulose) and materials with fiber layer addition with small diameters (nanofibers). Filter media, including cellulose, used in the internal combustion engine inlet air filtration are made of high diameter fibres, approx. 15 µm. Significantly higher separation and filtration efficiency performance are obtained for materials with lower fibre diameters (nanofibres), however, at the expense of a significantly higher pressure drop, affecting the engine performance. Filter media manufacturers mainly specify the structure parameters (pore size, air permeability and thickness), without giving any information on the dust filtration performance and rate. The literature includes test results for models of different filter media structures. Filtration process modelling using polydisperse dust with particles of different shape and density and irregular filter media structure is possible using advanced computer techniques, however, the process is complex and requires many simplifications. Test results can be applied directly in the automotive industry. The data can be obtained by experimental tests on filter medium specimens, complete filter elements or air filters which are costly and time-consuming tests, however, those test methods are the most reliable. Conditions and testing methodology for intake air filter materials used in internal combustion engines were developed. Filtration and flow resistance efficiency and accuracy were done depending on test dust mass stopped per unit area. Tested materials filtration efficiency was assessed by a filtration quality factor, which includes experimentally determined efficiency and accuracy as well as flow resistance values. Much higher efficiency and filtration accuracy of dust grains below 5 µm in filtration materials with nanofibers addition compared to standard filtration material (filter paper) were demonstrated. For the same flow resistance values, filter materials with nanofibers addition accumulate smaller dust mass than standard filter paper. Usage of materials with nanofibers addition used in motor vehicles intake air filtration ensures their high efficiency and accuracy. It minimises its components wear, but at the expense of faster flow resistance increase, which shortens filter life and increases filter replacement frequency. Results obtained during the experimental research partly fill the gap when it comes to the basic material properties used in internal combustion engines intake air filter partitions production.

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Fabrication and chemical crosslinking of electrospun trans-polyisoprene nanofiber nonwoven

Cited by 13 publications

References 34 publications

Polyimide/cellulose acetate core/shell electrospun fibrous membranes for oil-water separation

Polyimide/cellulose acetate core/shell electrospun fibrous membranes for oil-water separation

Natural Polymer Eucommia Ulmoides Rubber: A Novel Material

Material Properties Analysis with Addition of Nanofibres for Air Intake Filtration in Internal Combustion Engines

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