Rheological behavior and fiber spinning of polyacrylonitrile (PAN)/Carbon nanotube (CNT) dispersions at high CNT loading
Abstract
Rheological studies play an important role in polymer processing including fiber spinning. In the current work, rheological behavior has been studied for polyacrylonitrile (PAN)/carbon nanotube (CNT) dispersions in dimethyl formamide (DMF), where CNT loading is as high as 15 wt% of the total solids (polymer + CNT). The presence of CNTs increased the elastic-like and shear thinning behavior of the dispersions. The terminal slope of the log G' versus log G" curve, which was used to characterize the homogeneity of solution or dispersion, is dependent on the CNT concentration but independent of temperature between 0 and 60 °C. PAN/CNT-10 (90 wt% PAN +10 wt% CNT) and PAN/CNT-15 were gel spun at different conditions, with small diameter capillary at high shear rate and large diameter capillary at relatively low shear rate. Additionally, for PAN/CNT-10, fiber spinning with lower molecular weight polymer showed increased continuous jetting time when compared to spinning with higher molecular weight polymer. In addition, the rheological behavior of PAN/cellulose nanocrystal (CNC) dispersion with 20–60 wt% CNC was also compared to that of the PAN/CNT dispersions. PAN/CNC and PAN/CNT share similarities in both rheological behavior and fiber spinning at high filler loading.
- Authors:
-
[3];
- Georgia Institute of Technology, Atlanta, GA (United States). School of Chemical and Biomolecular Engineering
- Georgia Institute of Technology, Atlanta, GA (United States). School of Chemical and Biomolecular Engineering; Georgia Institute of Technology, Atlanta, GA (United States). Renewable Bioproducts Inst.
- Georgia Institute of Technology, Atlanta, GA (United States). School of Materials Science and Engineering
- Georgia Institute of Technology, Atlanta, GA (United States). School of Materials Science and Engineering; Georgia Institute of Technology, Atlanta, GA (United States). Renewable Bioproducts Inst.
- Publication Date:
- Research Org.:
- Vuronyx Technologies, LLC, Woburn, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); US Air Force Office of Scientific Research (AFOSR)
- OSTI Identifier:
- 1851845
- Alternate Identifier(s):
- OSTI ID: 1776186
- Grant/Contract Number:
- SC0013743; FA 9550-14-1-0194
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Polymer
- Additional Journal Information:
- Journal Volume: 215; Journal Issue: C; Journal ID: ISSN 0032-3861
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Polymer Science; Carbon nanotube; Polymer composites; Rheological behavior; Fiber spinning
Citation Formats
Lu, Mingxuan, Liao, Jianshan, Gulgunje, Prabhakar V., Chang, Huibin, Arias-Monje, Pedro J., Ramachandran, Jyotsna, Breedveld, Victor, and Kumar, Satish. Rheological behavior and fiber spinning of polyacrylonitrile (PAN)/Carbon nanotube (CNT) dispersions at high CNT loading. United States: N. p., 2020.
Web. doi:10.1016/j.polymer.2020.123369.
Lu, Mingxuan, Liao, Jianshan, Gulgunje, Prabhakar V., Chang, Huibin, Arias-Monje, Pedro J., Ramachandran, Jyotsna, Breedveld, Victor, & Kumar, Satish. Rheological behavior and fiber spinning of polyacrylonitrile (PAN)/Carbon nanotube (CNT) dispersions at high CNT loading. United States. https://doi.org/10.1016/j.polymer.2020.123369
Lu, Mingxuan, Liao, Jianshan, Gulgunje, Prabhakar V., Chang, Huibin, Arias-Monje, Pedro J., Ramachandran, Jyotsna, Breedveld, Victor, and Kumar, Satish. Thu .
"Rheological behavior and fiber spinning of polyacrylonitrile (PAN)/Carbon nanotube (CNT) dispersions at high CNT loading". United States. https://doi.org/10.1016/j.polymer.2020.123369. https://www.osti.gov/servlets/purl/1851845.
@article{osti_1851845,
title = {Rheological behavior and fiber spinning of polyacrylonitrile (PAN)/Carbon nanotube (CNT) dispersions at high CNT loading},
author = {Lu, Mingxuan and Liao, Jianshan and Gulgunje, Prabhakar V. and Chang, Huibin and Arias-Monje, Pedro J. and Ramachandran, Jyotsna and Breedveld, Victor and Kumar, Satish},
abstractNote = {Rheological studies play an important role in polymer processing including fiber spinning. In the current work, rheological behavior has been studied for polyacrylonitrile (PAN)/carbon nanotube (CNT) dispersions in dimethyl formamide (DMF), where CNT loading is as high as 15 wt% of the total solids (polymer + CNT). The presence of CNTs increased the elastic-like and shear thinning behavior of the dispersions. The terminal slope of the log G' versus log G" curve, which was used to characterize the homogeneity of solution or dispersion, is dependent on the CNT concentration but independent of temperature between 0 and 60 °C. PAN/CNT-10 (90 wt% PAN +10 wt% CNT) and PAN/CNT-15 were gel spun at different conditions, with small diameter capillary at high shear rate and large diameter capillary at relatively low shear rate. Additionally, for PAN/CNT-10, fiber spinning with lower molecular weight polymer showed increased continuous jetting time when compared to spinning with higher molecular weight polymer. In addition, the rheological behavior of PAN/cellulose nanocrystal (CNC) dispersion with 20–60 wt% CNC was also compared to that of the PAN/CNT dispersions. PAN/CNC and PAN/CNT share similarities in both rheological behavior and fiber spinning at high filler loading.},
doi = {10.1016/j.polymer.2020.123369},
journal = {Polymer},
number = C,
volume = 215,
place = {United States},
year = {Thu Dec 31 00:00:00 EST 2020},
month = {Thu Dec 31 00:00:00 EST 2020}
}
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