TY - JOUR
T1 - Effect of material parameter of viscoelastic giesekus fluids on extensional properties in spinline and draw resonance instability in isothermal melt spinning process
AU - Park, Geunyeop
AU - Yun, Jangho
AU - Lee, Changhoon
AU - Jung, Hyun Wook
N1 - Funding Information:
Funding: This research was supported by the Ministry of Trade, Industry & Energy (MOTIE, Korea) under the Industrial Technology Innovation Program (Grant No. 20004044).
PY - 2021/1/1
Y1 - 2021/1/1
N2 - The draw resonance instability of viscoelastic Giesekus fluids was studied by correlating the spinline extensional features and transit times of several kinematic waves in an isothermal melt spinning process. The critical drawdown ratios were critically dependent on the Deborah number (De, the ratio of material relaxation time to process time) and a single material parameter (αG) of the Giesekus fluid. In the intermediate range of αG, the stability status changed distinctively with increasing De, i.e., the spinning system was initially stabilized and subsequently destabilized, as De increases. In this αG regime, the level of velocity and extensional-thickening rheological property in the spinline became gradually enhanced at low De and weakened at high De. The draw resonance onsets for different values of αG were determined precisely using a simple indicator composed of several kinematic waves traveling the entire spinline and period of oscillation. The change in transit times of kinematic waves for varying De adequately reflected the effect of αG on the change in stability.
AB - The draw resonance instability of viscoelastic Giesekus fluids was studied by correlating the spinline extensional features and transit times of several kinematic waves in an isothermal melt spinning process. The critical drawdown ratios were critically dependent on the Deborah number (De, the ratio of material relaxation time to process time) and a single material parameter (αG) of the Giesekus fluid. In the intermediate range of αG, the stability status changed distinctively with increasing De, i.e., the spinning system was initially stabilized and subsequently destabilized, as De increases. In this αG regime, the level of velocity and extensional-thickening rheological property in the spinline became gradually enhanced at low De and weakened at high De. The draw resonance onsets for different values of αG were determined precisely using a simple indicator composed of several kinematic waves traveling the entire spinline and period of oscillation. The change in transit times of kinematic waves for varying De adequately reflected the effect of αG on the change in stability.
KW - Draw resonance
KW - Extensional deformation
KW - Giesekus fluid
KW - Kinematic waves
KW - Stability indicator
KW - Viscoelastic spinning
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U2 - 10.3390/polym13010139
DO - 10.3390/polym13010139
M3 - Article
AN - SCOPUS:85099198320
VL - 13
SP - 1
EP - 9
JO - Polymers
JF - Polymers
SN - 2073-4360
IS - 1
M1 - 139
ER -