Tailoring Supramolecular Nanofibers for Air Filtration Applications
Autor: | Daniel Weiss, Holger Misslitz, Alexander Kern, Hans-Werner Schmidt, David Nardini, Dominik Skrybeck, Klaus Kreger |
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Rok vydání: | 2016 |
Předmět: |
chemistry.chemical_classification
business.product_category Materials science 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electrospinning 0104 chemical sciences law.invention chemistry law Nanofiber Microfiber General Materials Science Viscose Composite material 0210 nano-technology business Spinning Filtration Air filter |
Zdroj: | ACS Applied Materials & Interfaces. 8:14885-14892 |
ISSN: | 1944-8252 1944-8244 |
DOI: | 10.1021/acsami.6b04720 |
Popis: | The demand of new materials and processes for nanofiber fabrication to enhance the performance of air filters is steadily increasing. Typical approaches to obtain nanofibers are based on top-down processes such as melt blowing, centrifugal spinning, and electrospinning of polymer materials. However, fabrication of polymer nanofibers is limited with respect to either a sufficiently high throughput or the smallest achievable fiber diameter. This study reports comprehensively on a fast and simple bottom-up process to prepare supramolecular nanofibers in situ inside viscose/polyester microfiber nonwovens. Here, selected small molecules of the materials class of 1,3,5-benzenetrisamides are employed. The microfiber-nanofiber composites exhibit a homogeneous nanofiber distribution and morphology throughout the entire nonwoven scaffold. Small changes in molecular structure and processing solvent have a strong influence on the final nanofiber diameter and diameter distribution and, consequently, on the filtration performance. Choosing proper processing conditions, microfiber-nanofiber composites with surprisingly high filtration efficiencies of particulate matter are obtained. In addition, the microfiber-nanofiber composite integrity at elevated temperatures was determined and revealed that the morphology of supramolecular nanofibers is maintained compared to that of the utilized polymer nonwoven. |
Databáze: | OpenAIRE |
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