Surface chemistry of electrospun cellulose nitrate nanofiber membranes
| Autor: | Steven Nartker, Lawrence T. Drzal, Sara Wiederoder, Per Askeland |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
chemistry.chemical_classification
Materials science Biomedical Engineering Bioengineering General Chemistry Polymer Condensed Matter Physics Electrospinning chemistry.chemical_compound Membrane chemistry Nanofiber Void (composites) General Materials Science Fiber Cellulose Composite material Environmental scanning electron microscope |
| Zdroj: | Journal of nanoscience and nanotechnology. 11(2) |
| ISSN: | 1533-4880 |
| Popis: | Electrospinning is a rapidly developing technology that provides a unique way to produce novel polymer nanofibers with controllable diameters. Cellulose nitrate non-woven mats of submicron-sized fibers with diameters of 100-1200 nm were prepared. The effects of processing equipment collector design void gap, and steel drum coated with polyvinylidene dichloride (PVDC) were investigated. The PVDC layer applied to the rotating drum aided in fiber harvesting. Electron microscopy (FESEM and ESEM) studies of as-spun fibers revealed that the morphology of cellulose nitrate fibers depended on the collector type and solution viscosity. When a rotating steel drum was employed a random morphology was observed, while the void gap collector produced aligned fiber mats. Increases in viscosity lead to larger diameter fibers. The fibers collected were free from all residual solvents and could undergo oxygen plasma treatment to increase the hydropholicity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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