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Extensional flow-induced crystallization of isotactic poly-1-butene using a filament stretching rheometer
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10.1122/1.3593471
/content/sor/journal/jor2/55/4/10.1122/1.3593471
http://aip.metastore.ingenta.com/content/sor/journal/jor2/55/4/10.1122/1.3593471

Figures

Image of FIG. 1.
FIG. 1.

A schematic diagram of a filament stretching rheometer with custom-built oven.

Image of FIG. 2.
FIG. 2.

The oscillatory shear master curves of DP0401M (△) and PB0200 (○) for a temperature of . Included in (a) are the solutions of modulus master curves with storage modulus (open symbols) and loss modulus (filled symbols), while (b) includes complex viscosity master curves. Superimposed over both sets of data are solid lines representing the multimode Maxwell fits to each data set.

Image of FIG. 3.
FIG. 3.

FiSER measurements of the transient extensional viscosity as a function of time for different extension rates of poly-1-butene at . Included are the solutions of extension rates of (◻), (●), and (◆). The open symbols correspond to DP0401M and filled symbols correspond to PB0200. The linear viscoelastic response is superimposed over the data.

Image of FIG. 4.
FIG. 4.

A pictorial representation of DSC fits with heat flow as a function of temperature. Included are the solutions of PB 401M samples with extension rates (◻), (◇), (△) all at a fixed strain of , and an unstretched sample (●).

Image of FIG. 5.
FIG. 5.

Percent crystallinity as a function of (a) extension rate and (b) Weissenberg number for isotactic poly-1-butene samples at . Included are the solutions for DP0401M (◻) at a fixed strain of and PB 0200 (●) at a fixed strain of .

Image of FIG. 6.
FIG. 6.

Microscopy images taken through crossed polarizers of the DP0401M samples showing the size and alignment of crystals under (a) quiescent conditions and (b) following a stretch with an extension rate of and an accumulated strain of . The stretch direction is aligned vertically.

Image of FIG. 7.
FIG. 7.

Two dimensional small angle x-ray scattering patterns for DP0401M samples crystallized following stretches of extension rates of (a) , (b) , and (c) . All stretches were performed to an accumulated strain of . The stretch direction is aligned horizontally to the scattering patterns.

Image of FIG. 8.
FIG. 8.

Intensity of the scattering images presented in Fig. 7 as a function of scattering vector, , for DP0401M. Included are results for the case of quiescent crystallization (◇) and crystallization following stretches of extension rates of (○), (◻), and (△). All stretches were performed to an accumulated strain of .

Image of FIG. 9.
FIG. 9.

Peak melting temperature as a function of extension rate for isotactic poly-1- butene samples at . Included are the solutions for DP0401M (◻) at a fixed strain of and PB 0200 (●) at a fixed strain of .

Image of FIG. 10.
FIG. 10.

Percent crystallinity as a function of series of strains for isotactic poly-1-butene samples. Included are the solutions for DP0401M at a fixed extension rate of (◼) and (○).

Tables

Generic image for table
TABLE I.

Zero-shear rate viscosity and relaxation times of poly-1-butene samples at .

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/content/sor/journal/jor2/55/4/10.1122/1.3593471
2011-05-27
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Extensional flow-induced crystallization of isotactic poly-1-butene using a filament stretching rheometer
http://aip.metastore.ingenta.com/content/sor/journal/jor2/55/4/10.1122/1.3593471
10.1122/1.3593471
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