Electrospun poly(tetrafluoroethylene) nanofiber membranes from PTFE-PVA-BA-H2O gel-spinning solutions

Kang, Weimin; Zhao, Huihui; Ju, Jingge; Shi, Zhijie; Qiao, Chunmei; Cheng, Bowen

doi:10.1007/s12221-016-6453-4

Cited by 24 publications

(17 citation statements)

References 25 publications

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“…As shown in Figure 2 , the XRD pattern of PTFE microfibers was observed at around 2θ = 18.02° and 31.60°, relative to (100) and (110) diffraction plan [ 40 ]. In addition, the XRD pattern of monoclinic crystal CuO nanoparticles appearing around 2θ = 32.50°, 35.50°, 38.71°, 48.79°, 53.49°, 58.19°, 61.52°, 66.08°, 67.94°, 72.36°, and 75.11° which can be attributed to the reflection planes of (110), (−111), (111), (−202), (020), (202), (−113), (−311), (113), (311), and (−222), respectively [ 41 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of CuO and Graphene on PTFE Microfibers: Experimental and Modeling Approaches

et al. 2022

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The surface of pure polytetrafluoroethylene (PTFE) microfibers was modified with ZnO and graphene (G), and the composite was studied using ATR-FTIR, XRD, and FESEM. FTIR results showed that two significant bands appeared at 1556 cm−1 and 515 cm−1 as indications for CuO and G interaction. The SEM results indicated that CuO and G were distributed uniformly on the surface of the PTFE microfibers, confirming the production of the PTFE/CuO/G composite. Density functional theory (DFT) calculations were performed on PTFE polymer nanocomposites containing various metal oxides (MOs) such as MgO, Al2O3, SiO2, TiO2, Fe3O4, NiO, CuO, ZnO, and ZrO2 at the B3LYP level using the LAN2DZ basis set. Total dipole moment (TDM) and HOMO/LUMO bandgap energy ΔE both show that the physical and electrical characteristics of PTFE with OCu change to 76.136 Debye and 0.400 eV, respectively. PTFE/OCu was investigated to observe its interaction with graphene quantum dots (GQDs). The results show that PTFE/OCu/GQD ZTRI surface conductivity improved significantly. As a result, the TDM of PTFE/OCu/GQD ZTRI and the HOMO/LUMO bandgap energy ΔE were 39.124 Debye and ΔE 0.206 eV, respectively. The new electrical characteristics of PTFE/OCu/GQD ZTRI indicate that this surface is appropriate for electronic applications.

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Section: Resultsmentioning

confidence: 99%

Effect of CuO and Graphene on PTFE Microfibers: Experimental and Modeling Approaches

et al. 2022

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“…The molten PTFE NPs will become soft and fuse to stick together, forming a chain of PTFE NPs or, in other words, a PTFE nanofiber. However, in the sintering process, severe shrinkage occurred to the PTFE nanofiber as molten PTFE NPs would fuse with each other after removing the matrix of PEO [ 33 , 34 ]. On the other hand, the water-soluble PAI resin belongs to a series of high molecular polymers with regular and alternating arrangement of imide rings and amide bonds.…”

Section: Resultsmentioning

confidence: 99%

Preparation of PI/PTFE–PAI Composite Nanofiber Aerogels with Hierarchical Structure and High-Filtration Efficiency

Liu

Shen

et al. 2020

Nanomaterials

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Electrospun nanofiber, showing large specific area and high porosity, has attracted much attention across various fields, especially in the field of air filtration. The small diameter contributes to the construction of filters with high-filtration efficiency for fine particulate matter (PM), however, along with an increase in air resistance. Herein, composited nanofiber aerogels (NAs), a truly three-dimensional (3D) derivative of the densely compacted electrospun mat, were constructed with the blocks of polytetrafluoroethylene–polyamideimide (PTFE–PAI) composite nanofiber and polyimide (PI) nanofiber. PI/PTFE–PAI NAs with hierarchically porous architecture and excellent mechanical properties have been obtained by thermally induced crosslink bonding. Results indicated that sintering at 400 °C for 30 min could complete the decomposition of polyethylene (PEO) and imidization of polyamic acid (PAA) into PI, as well as generate sufficient mechanical bonding between adjacent nanofibers in the NAs without extra additive. The well-prepared PI/PTFE–PAI NAs could withstand high temperature up to 500 °C. In addition, the filtration tests illustrated that the composite NAs had an excellent performance in PM filtration. More importantly, the filtration behavior could be adjusted to meet the requirements of various applications. The excellent thermal stability and high-filtration efficiency indicated its great potential in the field of high-temperature air filtration.

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“…185 It was further demonstrated that the oil/water separation properties of an analogous PTFE mat could not be further improved by the incorporation of ZnO particles, however in contrast this study found that the addition of small amounts of boric acid lowered the concentration of PVA needed to form smooth fibers. 186 Huang and coworkers subsequently employed the same system in near-field-ES (NFES) from dispersion to 3D-print micro-meshes for effective aqueous SiO 2 particle filtration. 187…”

Section: Dispersion Electrospinningmentioning

confidence: 99%

Electrospinning based on benign solvents: current definitions, implications and strategies

et al. 2022

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Electrospun poly(tetrafluoroethylene) nanofiber membranes from PTFE-PVA-BA-H2O gel-spinning solutions

Cited by 24 publications

References 25 publications

Effect of CuO and Graphene on PTFE Microfibers: Experimental and Modeling Approaches

Effect of CuO and Graphene on PTFE Microfibers: Experimental and Modeling Approaches

Preparation of PI/PTFE–PAI Composite Nanofiber Aerogels with Hierarchical Structure and High-Filtration Efficiency

Electrospinning based on benign solvents: current definitions, implications and strategies

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