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Elongational viscosity of monodisperse and bidisperse polystyrene melts
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10.1122/1.2206711
/content/sor/journal/jor2/50/4/10.1122/1.2206711
http://aip.metastore.ingenta.com/content/sor/journal/jor2/50/4/10.1122/1.2206711

Figures

Image of FIG. 1.
FIG. 1.

Results of linear viscoelastic measurements of as a function of the angular frequency . The measurements on the polystyrene melts were performed at 130, 150, and 170. The data are all time-temperature shifted to a reference temperature of .

Image of FIG. 2.
FIG. 2.

Results of linear viscoelastic measurements of as a function of the angular frequency . The measurements on the polystyrene melts were performed at 130, 150, and . The data are all time-temperature shifted to a reference temperature of .

Image of FIG. 3.
FIG. 3.

Corrected [Eq. (4)] transient extensional viscosity of PS50K and PS100K measured at different strain rates. Measurements were performed at .

Image of FIG. 4.
FIG. 4.

Corrected transient extensional viscosity [Eq. (4)] of Blend 1 measured at different strain rates. Measurements were performed at .

Image of FIG. 5.
FIG. 5.

Corrected transient extensional viscosity [Eq. (4)] of blend 3 measured at different strain rates. Measurements were performed at .

Image of FIG. 6.
FIG. 6.

Same data as in Fig. 3 for PS50K but plotted as uncorrected transient extensional stress [Eq. (3)] against Hencky strain .

Image of FIG. 7.
FIG. 7.

Same data as in Fig. 3 for PS100K but plotted as uncorrected transient extensional stress [Eq. (3)] against Hencky strain .

Image of FIG. 8.
FIG. 8.

Same data as in Fig. 4 for blend 1 but plotted as uncorrected transient extensional stress [Eq. (3)] against Hencky strain .

Image of FIG. 9.
FIG. 9.

Same data as in Fig. 5 for blend 3 but plotted as the uncorrected transient extensional stress [Eq. (3)] against Hencky strain .

Image of FIG. 10.
FIG. 10.

Steady elongational viscosity as a function of the elongational rate for PS50K, PS100K, PS200K, and PS390K. All measurements performed at . The solid lines are the predictions of the Wiest model.

Image of FIG. 11.
FIG. 11.

The steady stress divided with the plateau modulus against the Marrucci-Deborah number for PS50K, PS100K, PS200K, and PS390K.

Image of FIG. 12.
FIG. 12.

Corrected transient extensional viscosities [equation (4)] of blend 1, blend 2, PS50K, and PS390K at . The broken line is the upper convected Maxwell (UCM) prediction for blend 1, , the solid line is the UCM prediction for blend 2 , the dashed dot line is the UCM prediction for PS390K . The dotted line is the neo-Hookean model with , cut off at . The values of three times the zero shear viscosity for each melt is shown on the right with punctured lines.

Image of FIG. 13.
FIG. 13.

Steady elongational viscosity against the elongational rate for blend 3. All measurements performed at . The solid line is the overall prediction of the Wiest model, and the dashed lines are the individual contributions from the two individual polymer species.

Image of FIG. 14.
FIG. 14.

Steady elongational viscosity against the elongational rate for blend 2. All measurements performed at . The solid line is the overall prediction of the Wiest model, and the dashed lines are the individual contributions from the two individual polymer species.

Image of FIG. 15.
FIG. 15.

Steady elongational viscosity against the elongational rate for blend 1. All measurements performed at . The solid line is the overall prediction of the Wiest model, and the dashed lines are the individual contributions from the two polymers.

Image of FIG. 16.
FIG. 16.

Steady extensional viscosity measurements of PS100K measured at . The solid line is the Wiest fit where , and . The dotted line is the Wiest fit where , and .

Image of FIG. 17.
FIG. 17.

Least-square fitted parameter of against . Solid line is a linear fit, .

Tables

Generic image for table
TABLE I.

Composition of blend 1, blend 2, blend 3, Ye et al.'s blend, and Wagner et al.'s blends.

Generic image for table
TABLE II.

Molecular weights and polydispersities of the pure and blended polystyrene melts.

Generic image for table
TABLE III.

Linear viscoelastic properties of the pure and blended melts at . The constants in the BSW model are , , and as obtained from Jackson and Winter (1995) plus .

Generic image for table
TABLE IV.

The least-square fit of the Wiest model parameters and for the different melts together with dimensionless maximum in the steady elongational viscosity .

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/content/sor/journal/jor2/50/4/10.1122/1.2206711
2006-07-01
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Elongational viscosity of monodisperse and bidisperse polystyrene melts
http://aip.metastore.ingenta.com/content/sor/journal/jor2/50/4/10.1122/1.2206711
10.1122/1.2206711
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