Abstract:Abstract:The use of the electrospinning technique is a promising and versatile method for producing fibrous nonwovens from various polymers. Here we present fibre formation via direct electrospinning of a soluble polyimide, a class of polymers that is typically insoluble. In this study solution parameters as the solvent and the polymer concentration are investigated. Furthermore relevant process parameters are varied for optimization of the performance. The presented data indicate polyimide as a promising mate… Show more
“…As shown in Fig. 6 , the nanofibers become coarser with the increase in the concentration in this range [ 105 , 106 , 109 – 111 ]. Some studies have also shown the solution viscosity can be improved by adding cosolvents at a certain polymer concentration.…”
Section: Parametersmentioning
confidence: 99%
“…Some researchers have also changed the solution concentration and prepared microspheres instead of nanofibers by electrospinning, which provides a new idea [ 114 ]. Figure 6 SEM images of electrospun polyimide nanofibers with different concentrations a 10%, b 15% c 20% d 25% [ 105 ]. Reproduced with permission from reference [ 105 ].…”
Section: Parametersmentioning
confidence: 99%
“… Figure 6 SEM images of electrospun polyimide nanofibers with different concentrations a 10%, b 15% c 20% d 25% [ 105 ]. Reproduced with permission from reference [ 105 ]. Copyright 2017, De Gruyter …”
Section: Parametersmentioning
confidence: 99%
“… SEM images of electrospun polyimide nanofibers with different concentrations a 10%, b 15% c 20% d 25% [ 105 ]. …”
Section: Parametersmentioning
confidence: 99%
“…When the solubility is low, it is easy to form nanofibers, and high dielectric constant will make the diameter of nanofibers smaller [ 159 ]. Kohse et al [ 105 ] found the electrospinning of polyimide in N,N-dimethylformamide (DMF) produced smooth and round shaped nanofibers, but only ribbon shaped fibers were formed in 1,1,1,3,3,3-jexafluoro-2propanol (HFIP) and smooth but stucked fibers in dimethylsulfoxide (DMSO). Figure 9 SEM of electrospun polyimide nanofibers in different solvents [ 105 ].…”
In recent years, nanomaterials have aroused extensive research interest in the world's material science community. Electrospinning has the advantages of wide range of available raw materials, simple process, small fiber diameter and high porosity. Electrospinning as a nanomaterial preparation technology with obvious advantages has been studied, such as its influencing parameters, physical models and computer simulation. In this review, the influencing parameters, simulation and models of electrospinning technology are summarized. In addition, the progresses in applications of the technology in biomedicine, energy and catalysis are reported. This technology has many applications in many fields, such as electrospun polymers in various aspects of biomedical engineering. The latest achievements in recent years are summarized, and the existing problems and development trends are analyzed and discussed.
“…As shown in Fig. 6 , the nanofibers become coarser with the increase in the concentration in this range [ 105 , 106 , 109 – 111 ]. Some studies have also shown the solution viscosity can be improved by adding cosolvents at a certain polymer concentration.…”
Section: Parametersmentioning
confidence: 99%
“…Some researchers have also changed the solution concentration and prepared microspheres instead of nanofibers by electrospinning, which provides a new idea [ 114 ]. Figure 6 SEM images of electrospun polyimide nanofibers with different concentrations a 10%, b 15% c 20% d 25% [ 105 ]. Reproduced with permission from reference [ 105 ].…”
Section: Parametersmentioning
confidence: 99%
“… Figure 6 SEM images of electrospun polyimide nanofibers with different concentrations a 10%, b 15% c 20% d 25% [ 105 ]. Reproduced with permission from reference [ 105 ]. Copyright 2017, De Gruyter …”
Section: Parametersmentioning
confidence: 99%
“… SEM images of electrospun polyimide nanofibers with different concentrations a 10%, b 15% c 20% d 25% [ 105 ]. …”
Section: Parametersmentioning
confidence: 99%
“…When the solubility is low, it is easy to form nanofibers, and high dielectric constant will make the diameter of nanofibers smaller [ 159 ]. Kohse et al [ 105 ] found the electrospinning of polyimide in N,N-dimethylformamide (DMF) produced smooth and round shaped nanofibers, but only ribbon shaped fibers were formed in 1,1,1,3,3,3-jexafluoro-2propanol (HFIP) and smooth but stucked fibers in dimethylsulfoxide (DMSO). Figure 9 SEM of electrospun polyimide nanofibers in different solvents [ 105 ].…”
In recent years, nanomaterials have aroused extensive research interest in the world's material science community. Electrospinning has the advantages of wide range of available raw materials, simple process, small fiber diameter and high porosity. Electrospinning as a nanomaterial preparation technology with obvious advantages has been studied, such as its influencing parameters, physical models and computer simulation. In this review, the influencing parameters, simulation and models of electrospinning technology are summarized. In addition, the progresses in applications of the technology in biomedicine, energy and catalysis are reported. This technology has many applications in many fields, such as electrospun polymers in various aspects of biomedical engineering. The latest achievements in recent years are summarized, and the existing problems and development trends are analyzed and discussed.
The properties of materials play a significant role in triboelectric nanogenerators (TENGs). Advanced triboelectric materials for TENGs have attracted tremendous attention because of their superior advantages (e.g., high specific surface area, high porosity, and customizable macrostructure). These advanced materials can be extensively applied in numerous fields, including energy harvester, wearable electronics, filtration, and self‐powered sensors. Hence, designing triboelectric materials as advanced functional materials is important for the development of TENGs. Herein, the structural modification methods based on electrospinning to improve the triboelectric properties and the latest research progress in this kind of TENGs are systematically summarized. Preparation methods and design trends of nanofibers, microspheres, hierarchical structures, and doping nanomaterials are highlighted. The factors influencing the formation and properties of triboelectric materials are considered. Furthermore, the latest progress on the applications of TENGs is systematically elaborated. Finally, the challenges in the development of triboelectric materials are discussed, thereby guiding researchers in the large‐scale application of TENGs.
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