A5005226820- Supercapacitor Materials and Fabrication
- Electrospun Nanofibers in Biomedical Applications
- Fiber-reinforced polymer composites
- Silk-based biomaterials and applications
- Graphene research and applications
- Aerogels and thermal insulation
- Bone Tissue Engineering Materials
- Graphene and Nanomaterials Applications
- Tissue Engineering and Regenerative Medicine
- Catalysis for Biomass Conversion
- Light effects on plants
- Advancements in Battery Materials
- Fuel Cells and Related Materials
- Additive Manufacturing and 3D Printing Technologies
- Dyeing and Modifying Textile Fibers
- Photopolymerization techniques and applications
- Greenhouse Technology and Climate Control
- Thermochemical Biomass Conversion Processes
- Plant Molecular Biology Research
- Electrocatalysts for Energy Conversion
- Skin Protection and Aging
Hochschule Bielefeld
2020-2023
Keratin is one of the most important protein materials and can act as a sustainable biopolymer for manifold applications. This paper reports on extraction method keratin from wool fiber materials. The use this extracted polymer film preparation nano-composite by electrospinning investigated. films done in combination with both biopolymers alginate pectin. nanofibers are prepared polyacrylonitrile PAN. A view antibacterial properties given. As further analytic methods, Fourier-transform...
Nanofiber mats can be produced by electrospinning from diverse polymers and polymer blends as well with embedded ceramics, metals, etc. The large surface-to-volume ratio makes such nanofiber a well-suited substrate for tissue engineering other cell growth experiments. Cell growth, however, is not only influenced the morphology, but also sterilization process applied before experiment chemical composition of fibers. A former study showed that adhesion are supported polyacrylonitrile/gelatin...
Hydrothermal carbonization of trehalose, in contrast to other saccharides, leads the formation microspheres with a bimodal size distribution. The develop hierarchical porosity micro-, meso-, and macro-pores after pyrolysis.
Abstract 3D printing is nowadays used for many applications far beyond pure rapid prototyping. As tools to prepare custom-made objects which may be highly complex, different techniques have emerged into areas of application where the mechanical, thermal, optical and other properties meet high requirements. Amongst them, space, e.g. microsatellites, make extreme demands regarding stability under temperatures. Nevertheless, polymeric printed materials several advantages space in comparison...
Carbon nanofibers are used for a broad range of applications, from nano-composites to energy storage devices. They typically produced electrospun poly(acrylonitrile) by thermal stabilization and carbonization. The nanofiber mats usually placed freely movable in an oven, which leads relaxation internal stress within the nanofibers, making them thicker shorter. To preserve their pristine morphology they can be mechanically fixated, may cause break. In previous study, we demonstrated that...
Polyacrylonitrile (PAN) nanofibers, prepared by electrospinning, are often used as a precursor for carbon nanofibers. The thermal carbonization process necessitates preceding oxidative stabilization, which is usually performed thermally, i.e., carefully heating the electrospun nanofibers in an oven. One of typical problems occurring during this strong deformation fiber morphologies—the fibers become thicker and shorter, show partly undesired conglutinations. This problem can be solved...
Electrospun poly(acrylonitrile) (PAN) nanofibers are typical precursors of carbon nanofibers. During stabilization and carbonization, however, the morphology pristine PAN is not retained if as-spun nanofiber mats treated without an external mechanical force, since internal stress tends to relax, causing whole shrink significantly, while individual fibers thicken curl. Stretching during thermal treatment, in contrast, can result fractures due inhomogeneous stress. Previous studies have shown...
In this study, electrospun carbon fiber electrodes were prepared by the carbonization of PAN–Fe3O4 fibers at 800 °C for their use as catalysts in oxygen reduction reaction an alkaline electrolyte. Magnetic nanofiber mats fabricated using a needle-free electrospinning method incorporating magnetic nanoparticles into polymer solution. Electrochemical tests revealed that (ORR) activity is optimized intermediate magnetite loading 30% wt. These not only show better performance compared to...
Electrospun polyacrylonitrile (PAN) nanofi brous mats belong to typical precursor materials of carbon nanofibres.They have, however, the problem that they need be fi xed or even stretched during stabilisation and ideally also carbonisation in order avoid undesired conglutinations deformations original bre morphology, resulting brittle behaviour macroscopic mat, which impedes several applications.In an earlier investigation, blending PAN with ZnO was shown increase diameters lead...
A growing population needs an expansion of agriculture to ensure a reliable supply nutritious food. As variable concept, vertical farming, becoming increasingly popular, can allow plant growth for local food production in the sense on, e.g. facades addition classical layered structure buildings. substrates, textile fabrics be used as sustainable approach terms reusability. In our experiment, we investigated which properties should possess order suitable application farming by example cress...