A quantitative study of the effect of flow on the photopolymerization of fibers
| Autor: | Howard A. Stone, Janine K. Nunes, Malcolm Slutzky |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
business.product_category
Materials science Continuous flow 02 engineering and technology General Chemistry Flow direction 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Rigidity (electromagnetism) Photopolymer Polymerization Microfiber Fiber fabrication Molecular oxygen Composite material 0210 nano-technology business |
| Zdroj: | Soft Matter. 15:9553-9564 |
| ISSN: | 1744-6848 1744-683X |
| DOI: | 10.1039/c9sm01485c |
| Popis: | Pulsed-UV light in the continuous flow of a photo-crosslinkable liquid can result in gelation and is a useful method to produce soft microfibers with uniform sizes. With modeling and experiments, we characterize some aspects of this fiber fabrication process. We model the spatial concentration profiles of radical species and molecular oxygen in the flow direction during light exposure, and predict the critical conditions for the onset of fiber formation and compare these predictions with experimental observations. We also characterize the different regimes of microfiber production (no polymerization, non-uniform fibers, and uniform microfibers), qualitatively characterize the rigidity of the fibers, and demonstrate that we can predictably control the length of the produced microfibers for a range of process parameters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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