High-performance polyimide nanofiber membranes prepared by electrospinning

Yi, Bo; Zhao, Yuntao; Tian, Enling; Li, Jing; Ren, Yiwei

doi:10.1177/0954008318781703

Cited by 20 publications

(9 citation statements)

References 45 publications

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“…[50a] The sample is inspected by AFM using the taping mode to locate the fiber for indentation. [52] All the indentations are performed in the radial direction of the fiber and after indentation, the images of the indent are taken PI membrane [149] (fiber diameter 140-40 nm) 10.5 927.6 -PI nonwoven [94] As-spun PI (fiber diameter 300 nm) 114 3300 31…”

Section: Mat Thickness % 120 Nmmentioning

confidence: 99%

Mechanical Properties of Electrospun Fibers—A Critical Review

2021

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The mechanical properties of electrospun fibers play an important role in determining their applications. Most of the reported literature measures the mechanical properties of electrospun mats, scaffolds, or films instead of single fibers; however, a basic understanding of the relationship between the mechanical properties of the single fiber and that of the mat is critical to obtain precise information for choosing their application. This Review aims to evaluate the reported mechanical properties of electrospun fibers and the variables that influence those properties. An overview on the recent inputs in the development of mechanical properties of electrospun fibers is given, illustrating attempts to tailor mechanical properties of the fibers and/or mats. The necessity of determining flexible and reliable testing methods to establish testing standards for obtaining consistent and reliable data for both electrospun fibers and mats is also highlighted.

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Section: Mat Thickness % 120 Nmmentioning

confidence: 99%

Mechanical Properties of Electrospun Fibers—A Critical Review

2021

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“…In recent years, the rapid development of electrospun PI nano-fibrous membranes (NFMs) provides an instructive and valuable idea for developing solventless PI adhesives for high-temperature applications [15][16][17][18][19]. By analyzing the microscopic and macroscopic structural characteristics of PI NFMs, we can find that such materials possess high specific surface areas, high flexibility, highly entangled structure, and solvent-free characteristics, which are all required for high-performance PI adhesives [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Electrospun Phenylethynyl—Terminated Polyimide Nano-Fibrous Membranes with Potential Applications as Solvent-Free and High-Temperature Resistant Adhesives for Harsh Environments

Shen

Jia

et al. 2021

Nanomaterials

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High-temperature-resistant polymeric adhesives with high servicing temperatures and high adhesion strengths are highly desired in aerospace, aviation, microelectronic and other high-tech areas. The currently used high-temperature resistant polymeric adhesives, such as polyamic acid (PAA), are usually made from the high contents of solvents in the composition, which might cause adhesion failure due to the undesirable voids caused by the evaporation of the solvents. In the current work, electrospun preimidized polyimide (PI) nano-fibrous membranes (NFMs) were proposed to be used as solvent-free or solvent-less adhesives for stainless steel adhesion. In order to enhance the adhesion reliability of the PI NFMs, thermally crosslinkable phenylethynyl end-cappers were incorporated into the PIs derived from 3,3’,4,4’-oxydiphthalic anhydride (ODPA) and 3,3-bis[4-(4-aminophenoxy)phenyl]phthalide (BAPPT). The derived phenylethynyl-terminated PETI-10K and PETI-20K with the controlled molecular weights of 10,000 g mol−1 and 20,000 g mol−1, respectively, showed good solubility in polar aprotic solvents, such as N-methyl-2-pyrrolidinone (NMP) and N,N-dimethylacetamide (DMAc). The PI NFMs were successfully fabricated by electrospinning with the PETI/DMAc solutions. The ultrafine PETI NFMs showed the average fiber diameters (dav) of 627 nm for PETI-10K 695 nm for PETI-20K, respectively. The PETI NFMs showed good thermal resistance, which is reflected in the glass transition temperatures (Tgs) above 270 °C. The PETI NFMs exhibited excellent thermoplasticity at elevated temperatures. The stainless steel adherends were successfully adhered using the PETI NFMs as the adhesives. The PI NFMs provided good adhesion to the stainless steels with the single lap shear strengths (LSS) higher than 20.0 MPa either at room temperature (25 °C) or at an elevated temperature (200 °C).

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“…It can simulate the natural extracellular matrix (ECM) 64 . Electrospinning nanofiber membrane has the advantage of high porosity and a complex three‐dimensional porous structure 65 . This unique structure can provide carriers for cell immobilization and guide cell behavior 66,67 .…”

Section: Application Of Polymer Membrane Materials In the Field Of Biological Fermentationmentioning

confidence: 99%

Material‐mediated cell immobilization technology in the biological fermentation proces

Gao

Jiang

et al. 2021

Biofuels Bioprod Bioref

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Cell immobilization technology has shown much potential in the field of biological fermentation owing to its simple operation, maintenance of long‐term cell viability, repeatability, good stability, and high tolerance. Compared with free‐cell fermentation, immobilized cells show strong growth and metabolism performance in complex environments, such as environments with low pH, or with high concentrations of substrate and product. The metabolic properties of immobilized cells mainly depend on the carrier materials. In recent years, polymer membrane materials have attracted much attention because of their good mechanical properties and flexible support structure. In addition to improving the activity and stability of immobilized cells, biocompatibility modification can also be carried out on the surface of the carrier, which can reduce specific non‐biological interactions between the cells and the carrier. In this review, current advances in cell immobilization using different materials in the field of biological fermentation are reviewed. Perspectives on immobilized cells and the challenges associated with them in the field of biological fermentation are also addressed. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

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High-performance polyimide nanofiber membranes prepared by electrospinning

Cited by 20 publications

References 45 publications

Mechanical Properties of Electrospun Fibers—A Critical Review

Mechanical Properties of Electrospun Fibers—A Critical Review

Preparation and Properties of Electrospun Phenylethynyl—Terminated Polyimide Nano-Fibrous Membranes with Potential Applications as Solvent-Free and High-Temperature Resistant Adhesives for Harsh Environments

Material‐mediated cell immobilization technology in the biological fermentation proces

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