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On the viscoelastic Poisson’s ratio in amorphous polymers
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10.1122/1.3473811
/content/sor/journal/jor2/54/5/10.1122/1.3473811
http://aip.metastore.ingenta.com/content/sor/journal/jor2/54/5/10.1122/1.3473811

Figures

Image of FIG. 1.
FIG. 1.

Contour plot of for the case of , , , and . The legend on the right highlights the values of the limiting short-time derivative of Poisson ratio.

Image of FIG. 2.
FIG. 2.

Time dependence of the viscoelastic Poisson ratio calculated as a function of the relative position on the time axis of the shear and bulk responses as indicated by the values of .

Image of FIG. 3.
FIG. 3.

Contours of for different values of . The contours do not depend on , , and .

Image of FIG. 4.
FIG. 4.

vs evaluated at and .

Image of FIG. 5.
FIG. 5.

Polycarbonate: Experimental data for the shear relaxation modulus (symbols) and PVT-extracted bulk compliance (dashed line) at a reference temperature of , as measured at 0.1 K/min, from the works by Grassia and D’Amore (2009a, 2009b). The solid line indicates the fit of Eq. (12).

Image of FIG. 6.
FIG. 6.

Polystyrene: Experimental data for the shear creep compliance (dashed line) and for the bulk relaxation modulus (symbols) at a reference temperature of , as measured at 0.1 K/min, from the works by Meng and Simon (2007) and by Meng et al. (2009), respectively. The solid line indicates the fit of Eq. (11).

Image of FIG. 7.
FIG. 7.

Polycyanurate, : Experimental data for the shear and bulk relaxation moduli (symbols) at a reference temperature of , as measured at 0.1 K/min, from the works by Li and Simon (2007), by Guo and Simon (2009), and by Guo and Simon (2010). The solid lines display the fit of Eqs. (11) and (12).

Image of FIG. 8.
FIG. 8.

Polycyanurate, : Experimental data for the shear and bulk relaxation moduli (symbols) at a reference temperature of , as measured at 0.1 K/min from the works by Li and Simon (2007), by Guo and Simon (2009), and by Guo and Simon (2010). The solid lines display the fit of Eqs. (11) and (12).

Image of FIG. 9.
FIG. 9.

Poisson’s ratio for polycarbonate (PC: dot-dashed line), polystyrene (PS: dashed line), and polycyanurates (PCy : dot dot-dashed line and PCy : solid line). All curves are for a reference temperature of , as measured at 0.1 K/min. The insets highlight the minima at short times for the two linear polymers (polycarbonate and polystyrene). Here Poisson’s ratio, calculated by shifting the bulk response, is displayed as thin lines.

Image of FIG. 10.
FIG. 10.

Bulk (dashed line) and shear (solid line) relaxation spectra a reference temperature of , as measured at 0.1 K/min.

Tables

Generic image for table
TABLE I.

Parameters of Eq. (9) utilized to fit the shear relaxation modulus.

Generic image for table
TABLE II.

Parameters of Eq. (10) utilized to fit the bulk response.

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/content/sor/journal/jor2/54/5/10.1122/1.3473811
2010-08-24
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: On the viscoelastic Poisson’s ratio in amorphous polymers
http://aip.metastore.ingenta.com/content/sor/journal/jor2/54/5/10.1122/1.3473811
10.1122/1.3473811
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