Measuring Physical and Chemical Properties of Single Nanofibers for Energy Applications—Possibilities and Limits in ssalimpour

As the global facial mask market continues to grow, consumers have put forward higher requirements for the functionality and ingredients of mask products. Ordinary facial masks mostly use ordinary non-woven fabrics as the mask base fabric and are used with essence. Preservatives are generally added. At the same time, they are susceptible to the influence of the external environment and are easily oxidized, causing the mask to deteriorate and cause skin allergic reactions. In addition, traditional facial masks have problems such as poor fit with the skin, poor breathability, insufficient absorption of nutrient solutions, and easy dripping. 2024-06-01

In electrospinning, nanofibers are frequently produced in nonwoven web form. Their poor mechanical properties (below 100 MPa) and difficulty in tailoring the fibrous structure have restricted their applications. However, advanced materials must be highly resistant to both deformation and fracture. By combining electrospinning technology with stretching, we have overcome this disadvantage and demonstrated a polyacrylonitrile nanofiber yarn with a tensile strength of 743 ± 20 MPa. The nearly perfect uniaxial orientation of the fibrils under the stretching process is crucial for the remarkable mechanical properties of the yarn. Additionally, the nanofiber yarn was functionalized by a 2024-11-01

Wound management is a complex clinical challenge that needs advanced materials and techniques for satisfactory results. Electrospun nanofiber mats have emerged as an innovative alternative for wound healing purposes due to their porous architecture, greater surface area, ease of water absorption, mimicry of the extracellular matrix of natural tissues and tunable mechanical properties. This paper sheds light on recent advances in the fabrication techniques, properties, structural features and application of electrospun polymeric nanofiber mats for wound healing purposes emphasizing the importance of polymer selection and processing parameters in tailoring their physicochemical properties. 2024-12-01

Citation: Brockhagen, B.; Hellert, C.; Grothe, T.; Güth, U.; Storck, J.L.; Ehrmann, A.; Wortmann, M. Freestanding Flexible Carbon Nanofiber Mats for Energy Storage Applications. Mater. Proc. 2025, 21, 1. Abstract: Carbon nanofiber mats can be applied for diverse energy applications. Usually, they should be freestanding and show sufficient structural stability. Poly(acrylonitrile) (PAN) is often used as the base material for electrospinning due to its high carbon yield during carbonization. Carbonized PAN nanofiber mats, however, may be brittle and break under mechanical load. Here, we report a study of the impact of ZnO and tetraethyl or-thosilicate (TEOS) as nanoparticle additives on the 2025-02-01

In this study, a novel handheld battery-operated electrospinning device equipped with a nanofiber concentrator was developed to enhance target area control during nanofiber deposition. The device manipulates the electric field using the dielectric properties of a polymeric tunnel, enabling precise deposition of nanofibers with specific patterns. Low molecular weight chitosan/poly(vinyl alcohol) (CS/PVA) nanofibers with an average diameter of 65 ± 9 nm were successfully synthesized. Finite Element Analysis (FEA) simulations demonstrated the effectiveness of the nanofiber concentrator in stabilizing the whipping jet, reducing deposition area, and increasing accuracy. 2025-02-01