Can Extensional Flow Rupture Macromolecules in an Electrospinning Process? |
| |
| Authors: | Chenggui Sun Cagri Ayranci Yu Chen Yaman Boluk |
| |
| Institution: | 1. Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada;2. National Institute for Nanotechnology, National Research Council of Canada, Edmonton, Alberta, Canada;3. Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada |
| |
| Abstract: | The fracture of high molecular weight poly(ethylene oxide) (PEO) chains under extensional stretching during the electrospinning of aqueous solutions was investigated by measuring solution viscosities and monitoring the change of molecular weight. The degree of macromolecular chain fractures in 1.0% polymer solutions increased with the increase in molecular weight. The strain rates for stretching and fracturing of macromolecules are critical for the degradation of polymers along with experimental elongational strain rates. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017 , 55, 1051–1054 |
| |
| Keywords: | chain fracture electrospun fibers molecular weight distribution |
|
|
