Abstract
Extensional viscosities η e(ε•) of polystyrenes (PS) with high molecular weights in benzyl butyl phthalate (BBP; a good solvent for PS) and dioctyl phthalate (DOP; a θ solvent for PS) were studied in the dilute region for viscosity as a function of the extensional rate with an opposing jets extensional rheometer. The η e(ε•) data obtained with use of different orifice geometries agree with each other within experimental errors. The extensional viscosity at low ε• limit, η 0e is about three times larger than the corresponding zero - shear viscosity in accordance with Trouton's rule. In high ε• region, the extensional - thickening was observed for all the solutions. The critical extensional rate ε• * at which the η e(ε•) deviates from η 0e is confirmed to be related to the longest relaxation time of the solutions.
| Original language | English |
|---|---|
| Pages (from-to) | 99-105 |
| Number of pages | 7 |
| Journal | Nihon Reoroji Gakkaishi |
| Volume | 25 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 1 1997 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Extensional viscosity of polystyrene solutions in dilute region. / Kitade, Shinichi; Takahashi, Yoshiaki; Noda, Ichiro; Yao, Ming Long.
In: Nihon Reoroji Gakkaishi, Vol. 25, No. 2, 01.01.1997, p. 99-105.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Extensional viscosity of polystyrene solutions in dilute region
AU - Kitade, Shinichi
AU - Takahashi, Yoshiaki
AU - Noda, Ichiro
AU - Yao, Ming Long
PY - 1997/1/1
Y1 - 1997/1/1
N2 - Extensional viscosities η e(ε•) of polystyrenes (PS) with high molecular weights in benzyl butyl phthalate (BBP; a good solvent for PS) and dioctyl phthalate (DOP; a θ solvent for PS) were studied in the dilute region for viscosity as a function of the extensional rate with an opposing jets extensional rheometer. The η e(ε•) data obtained with use of different orifice geometries agree with each other within experimental errors. The extensional viscosity at low ε• limit, η 0e is about three times larger than the corresponding zero - shear viscosity in accordance with Trouton's rule. In high ε• region, the extensional - thickening was observed for all the solutions. The critical extensional rate ε• * at which the η e(ε•) deviates from η 0e is confirmed to be related to the longest relaxation time of the solutions.
AB - Extensional viscosities η e(ε•) of polystyrenes (PS) with high molecular weights in benzyl butyl phthalate (BBP; a good solvent for PS) and dioctyl phthalate (DOP; a θ solvent for PS) were studied in the dilute region for viscosity as a function of the extensional rate with an opposing jets extensional rheometer. The η e(ε•) data obtained with use of different orifice geometries agree with each other within experimental errors. The extensional viscosity at low ε• limit, η 0e is about three times larger than the corresponding zero - shear viscosity in accordance with Trouton's rule. In high ε• region, the extensional - thickening was observed for all the solutions. The critical extensional rate ε• * at which the η e(ε•) deviates from η 0e is confirmed to be related to the longest relaxation time of the solutions.
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U2 - 10.1678/rheology1973.25.2_99
DO - 10.1678/rheology1973.25.2_99
M3 - Article
VL - 25
SP - 99
EP - 105
JO - Nihon Reoroji Gakkaishi
JF - Nihon Reoroji Gakkaishi
SN - 0387-1533
IS - 2
ER -