Viscoelasticity and diffusion in miscible blends of saturated hydrocarbon polymers

Gell, Carol B.; Krishnamoorti, Ramanan; Kim, Eugene; Graessley, William W.; Fetters, Lewis J.

doi:10.1007/bf00366662

Cited by 17 publications

(2 citation statements)

References 29 publications

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“…Tsenoglou developed a rheological model in order to explain the linear viscoelastic behavior of miscible heteropolymer blends and that of homopolymer blends of dissimilar molecular weights (Tsenoglou 1987, Tsenoglou 1988a, b, Tsenoglou 1991. This model or variants of it are often used to interpret linear viscoelastic data issued from miscible polymer melts (Gell et al 1997, Groves et al 1996, Haley et al 2003. The model is based on the assumption that the coupling probability between any two components along a single chain is proportional to the fractional participation of each component in the blend which yields to the following relaxation modulus for the blend:…”

Section: Tsenoglou Combination Rule For Miscible Blendsmentioning

confidence: 99%

“…This difference comes from the change of the effective glass transition temperatures of the components in the mix. This difference is commonly compensated by introducing into the calculations the dynamic moduli of each component measured at the same temperature from the effective glass transition temperature (Gell et al 1997).…”

Section: Tsenoglou Combination Rule For Miscible Blendsmentioning

confidence: 99%

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Modeling the linear viscoelastic behavior of asphaltite-modified bitumens

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Section: Tsenoglou Combination Rule For Miscible Blendsmentioning

confidence: 99%

Section: Tsenoglou Combination Rule For Miscible Blendsmentioning

confidence: 99%

Modeling the linear viscoelastic behavior of asphaltite-modified bitumens

Themeli

Chailleux²,

Farcas³

et al. 2016

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View full text Add to dashboard Cite

show abstract

Rheology And Processing of Nanoparticle Filled Polymer Blend Nanocomposites

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Rheology of Polymer Blends

Utracki

2011

Encyclopedia of Polymer Blends

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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].Blends are classified as either thermodynamically miscible or immiscible, with the latter dominating. However, imposition of a flow affects the thermodynamic equi librium and it may enhance the miscibility of immiscible blends or vice-versa -there is an interrelation between rheology and thermodynamics. Similarly, flow affects the degree of deformation of the dispersed phase, thus in immiscible blends there are other interrelations between rheology and morphology, which affect the blend performance. To the complexity of polymer alloys and blends (PAB) behavior one must add the incorporation of solids, either in the form of filler and nanofiller particles or by simple fact of blending two components with widely different transition temperatures.Since the flow of PAB is complex, it is useful to revert to simple models, for example, for miscible blends to solutions or mixtures of polymer fractions, for immiscible blends to emulsions or suspensions, and for compatibilized blends to block copolymers (Table 2.1). It is also advisable to study flow behavior of multiphase systems at constant stress (not at constant deformation rate) [2,3].For miscible blends, the free volume theory predicts a positive deviation from the log-additivity rule (PDB, positively deviating blend). However, depending on the system and method of preparation, these blends may show a positive deviation, negative deviation, or additivity [4]. Upon mixing, the presence of specific interac tions may change the free volume and degree of entanglement, which in turn affect the flow behavior [5,6]. For immiscible blends the flow is similarly affected, but in addition there are at least three contributing phases: of the polymeric matrix, of the First Edition. Edited by Avraam I. Isayev.

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Viscoelasticity and diffusion in miscible blends of saturated hydrocarbon polymers

Cited by 17 publications

References 29 publications

Modeling the linear viscoelastic behavior of asphaltite-modified bitumens

Modeling the linear viscoelastic behavior of asphaltite-modified bitumens

Rheology And Processing of Nanoparticle Filled Polymer Blend Nanocomposites

Rheology of Polymer Blends

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