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Rheological and morphological properties of reactively compatibilized thermoplastic olefin (TPO) blendsa)
a)Parts of this work have been presented at the 82nd annual meeting of the Society of Rheology.
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10.1122/1.3700966
/content/sor/journal/jor2/56/3/10.1122/1.3700966
http://aip.metastore.ingenta.com/content/sor/journal/jor2/56/3/10.1122/1.3700966

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the reactions involved in synthesizing the compatibilizer copolymer.

Image of FIG. 2.
FIG. 2.

Mechanical representation of (a) ordinary Zener model, (b) Zener model with two FE (Sailer and Handge, 2007), and (c) GZM.

Image of FIG. 3.
FIG. 3.

AFM micrographs of PP70 samples quenched right after mixing in the internal mixer: (a) PP70n, (b) PP70m, and (c) PP70h.

Image of FIG. 4.
FIG. 4.

AFM micrographs of PP70 samples after compression molding and squeezing in the gap of the cone-and-plate geometry at 200 °C for 30 min: (a) PP70n, (b) PP70m, and (c) PP70h.

Image of FIG. 5.
FIG. 5.

Variations of the storage modulus (a) and the complex viscosity (b) with frequency for the PP70 blends with different levels of compatibilizer. The insets show the predictions of the Palierne model (data are shifted by factors shown).

Image of FIG. 6.
FIG. 6.

Predictions of the Zener model with two FE and of the Palierne model with equilibrium modulus for the storage modulus of the PP70h blend (data are shifted by factors shown). The solid line represents the behavior of suspensions of rigid particles predicted by the Palierne model for rigid inclusions.

Image of FIG. 7.
FIG. 7.

Comparison between the experimental data (shifted by factors shown) and the predictions of the loss tangent versus frequency for the PP70 blends using the modified Palierne model, the Zener model with two FE and its fractional generalization (GZM).

Image of FIG. 8.
FIG. 8.

Morphology of the PP/EC (85/15) blends: (a) noncompatibilized (PP85n) and (b) compatibilized with 5 wt. % PPNH2 (PP85h).

Image of FIG. 9.
FIG. 9.

Storage modulus (a) and loss tangent (b) as functions of frequency for PP85n and PP85h blends, along with the predictions of GZM and the Palierne model.

Image of FIG. 10.
FIG. 10.

Stress growth data for the PP70n and PP70m blends at and . Solid lines represent the predictions of the LPL model for the PP70n blend.

Image of FIG. 11.
FIG. 11.

Stress growth data for the PP70h blend at , , and , along with the predictions of the GZM.

Image of FIG. 12.
FIG. 12.

Stress relaxation behavior of the PP70 blends after cessation of shearing at .

Image of FIG. 13.
FIG. 13.

Morphology of blends with different compatibilizer concentrations after shearing at for 1 h: (a) PP70n, (b) PP70m, and (c) PP70h.

Tables

Generic image for table
TABLE I.

Properties of the polymers used.

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TABLE II.

Fitting parameters of the fractional Zener model with two FE.

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TABLE III.

Fitting parameters of the GZM.

Generic image for table
TABLE IV.

Parameters used for predicting the transient shear viscosity of the PP70n blend.

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/content/sor/journal/jor2/56/3/10.1122/1.3700966
2012-04-17
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Rheological and morphological properties of reactively compatibilized thermoplastic olefin (TPO) blendsa)
http://aip.metastore.ingenta.com/content/sor/journal/jor2/56/3/10.1122/1.3700966
10.1122/1.3700966
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