Dynamic Viscoelastic Properties of Polystyrene in High-Viscosity Solvents. Extrapolation to Infinite Dilution and High-Frequency Behavior

Massa, Dennis J.; Schrag, John L.; Ferry, John D.

doi:10.1021/ma60020a015

Cited by 68 publications

(49 citation statements)

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“…Recently, Manke and Williams [8] studied the behaviour of a monodisperse polystyrene in two solvent blends of low molecular weight polystyrene and styrene monomer. Their experimental results confirmed the previous work of Massa et al [9] that polymer behaviour may also be affected under certain conditions by the internal viscosity of the polymer. This property has been found to be dependent on the structure of the polymer and of the solvent as well as the solvent viscosity [10][11][12].…”

Section: Introductionsupporting

confidence: 90%

Molecular interpretation of the behaviour of polyisobutylene in different solvents

1990

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The effects of solvent environment on the behaviour of a high molecular weight polyisobutylene dissolved in kerosene and various grades of poly-l-butene solvent mixtures are investigated. The dependence of various molecular parameters such as zero-shear viscosity, intrinsic viscosity, specific viscosity, relaxation time and molecular expansion factor, on the polymer concentration, type of solvent and solvent viscosity is studied in the vicinity of dilute and semidilute regions (near the critical concentration c*). The dependence of these parameters on solvent environment follows qualitatively Zimm's molecular model. The dependence on the polymer concentration deviates from this dilute solution theory. The effects of temperature on the zero-shear viscosity and the Maxwell relaxation time are also presented for two PIB solutions.

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Section: Introductionsupporting

confidence: 90%

Molecular interpretation of the behaviour of polyisobutylene in different solvents

1990

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“…is independent of the molecular weight M and the solvent viscosity ~ as has been observed by Ferry et al (4,5). …”

Section: General Expression For the Limiting Viscositysupporting

confidence: 63%

Theory of the high-frequency limiting viscosity of a dilute polymer solution, part 2

Doi

Nakajima

Wada

1976

Colloid Polymer Sci

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“…This suggests that their [tl~]/[tl0] ~ 0.8 was not the true rheological limit, either. [14]. These workers used good viscous solvent (Aroclors) for polystyrene, so r/s was even larger for their systems (,-~ 7 P a ' s ) than in ours ( 1 .…”

Section: Discussionmentioning

confidence: 58%

“…The polymer coil is severely deformed in the [t/oo] limit while negligibly deformed in the [r/~o] limit, but if these limits both represent the summed contributions of independent chain segments, the overall chain configuration may not be a dominant factor. In fact, the use of Aroclor in the dynamic experimënts [14] expands the polystyrene chain relative to the use of a theta solvent, perhaps to the extent (though not with the same symmetry) that shear extends the chain in the latter case.…”

Section: Discussionmentioning

confidence: 99%

Viscometric properties of viscous theta solutions of monodisperse polystyrene

McAdams

Williams

1986

Rheol Acta

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Theta solvents for polystyrene are prepared from high-viscosity blends of styrene and low-molecular-weight polystyrene, and then used to make dilute solutions with monodisperse polystyrene solutes of high-M=2.3, 6.0, 9.0, 18.0" 105. A Weissenberg rheogoniometer is used to measure the non-Newtonian viscosity ~/ as a function of shear stress T, for low T values, and also the complex viscosity components r/' and ~f' as functions of frequency o~. A capillary viscometer is used for high-z measurements of r/(•). Viscometric properties, at room temperature, are analyzed as functions of high-molecular-weight solute concentration c with parameters of constant ror co to obtain [r/(z)], [t/' (co)], and [q" (co)]. Such a collection of data has apparently not previously been available for polymers ,in theta solvents (in which Gaussian chain statistics prevail). Also unique is the achievement of high stress (~= 2. 104pa) at low shear rate, by virtue of high solvent viscosity which is not characteristic of other known theta solvents.

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Dynamic Viscoelastic Properties of Polystyrene in High-Viscosity Solvents. Extrapolation to Infinite Dilution and High-Frequency Behavior

Cited by 68 publications

References 1 publication

Molecular interpretation of the behaviour of polyisobutylene in different solvents

Molecular interpretation of the behaviour of polyisobutylene in different solvents

Theory of the high-frequency limiting viscosity of a dilute polymer solution, part 2

Viscometric properties of viscous theta solutions of monodisperse polystyrene

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