Encyclopedia of Polymer Blends 2011
DOI: 10.1002/9783527805242.ch2
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Rheology of Polymer Blends

Abstract: The first polymer blend was patented in 1846 and since then blends have became ubiquitous. Blending may provide a full set of material properties, improving processability and/or specific properties. With the advancement of technology there is the notorious growth of complexity -while in the beginning blending involved two polymers, initially without a compatibilizer, more recent commercial alloys have up to five polymers, three compatibilizers, and frequently are reinforced with macro-or nanoparticles [1].Ble… Show more

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Cited by 8 publications
(8 citation statements)
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“…It seems that PLA and PCL do not show perfect adhesion at the interface, which is the condition for validity of the Kerner equation. This imperfect adhesion is apparently interrelated to the slip at the interface, which is commonly accepted explanation to the negative deviation of the viscosity dependence of many immiscible polymer blends on their composition from additivity [44]. Due to this discrepancy, Palierne's theory cannot be utilized for determination of r in our system.…”
Section: Resultsmentioning
confidence: 90%
“…It seems that PLA and PCL do not show perfect adhesion at the interface, which is the condition for validity of the Kerner equation. This imperfect adhesion is apparently interrelated to the slip at the interface, which is commonly accepted explanation to the negative deviation of the viscosity dependence of many immiscible polymer blends on their composition from additivity [44]. Due to this discrepancy, Palierne's theory cannot be utilized for determination of r in our system.…”
Section: Resultsmentioning
confidence: 90%
“…Observation of two glass transitions is an indication of a phase separation. According to Utracki [30], distinct glass transitions may be observed as soon as the domain size exceeds 30 nm. Observations by transmission electron microscopy were carried out on dextrin-graft-poly(butyl acrylate) and dextrin-graftpolystyrene samples and images are reported on Figure 6c and Figure 6d.…”
Section: Thermal Properties and Morphologymentioning
confidence: 99%
“…During injection molding, the morphology at the surface (skin) differed from the morphology of the interior (core) for the ABS composites. This effect is known as the skin‐core effect, where the filler particles are oriented in the direction of flow at the surface and randomly oriented at the core . This is due to the fact that melt is subjected to different flow rates as well as cooling rates at the surface and inside (core).…”
Section: Resultsmentioning
confidence: 99%
“…The orientation takes place during the fountain flow by stretching the flow elements and then depositing them on the cold mold surface. As cooling is slower in the core, the orientation is weak or random . It is more evident in case of anisometric fillers like talc, mica, due to their shape.…”
Section: Introductionmentioning
confidence: 99%