Results 241 to 250 of about 168,848 (298)

Intrinsic viscosity of polystyrene

Journal of Polymer Science: Polymer Physics Edition, 1979
AbstractZero‐shear‐rate intrinsic viscosities [η]0 in benzene at 25°C and in cyclohexane at 34.5°C were measured for two series of polystyrene samples: six fractions ranging in Mw(weight‐average molecular weight) from 8.8 × 106 to 5.7 × 107 and 11 “monodisperse” samples ranging in Mw from 4 × 103 to 4.8 × 106.
Y. Einaga, Y. Miyaki, H. Fujita
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Intrinsic viscosity of oligo- and polyisobutylenes: treatments of negative intrinsic viscosities

Macromolecules, 1991
The intrinsic viscosity, [η], was determined for 19 samples of oligo- and polyisobutylenes in the M w range from 1.12×10 2 to 1.79×10 6 in isoamyl isovalerate at 25.0 o C (θ) and in benzene at 25.0. o C (θ)•[η] is negative for isobutylene dimers in both solvents.
Fumiaki Abe, Yoshiyuki Einaga, Hiromi Yamakawa   +2 more
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The Intrinsic Viscosity

2004
The number of parameters that have influence on the flow behavior of a polymer solution is, as will be shown in the upcoming chapters, enormous and makes it difficult to interpret the viscosimetric measurements. For this reason, viscosimetric measurements are carried out with dilute sample solutions to minimize the interactions of the single polymer ...
Werner-Michael Kulicke, Christian Clasen
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Intrinsic Viscosity of Gelatin

Nature, 1962
THE intrinsic viscosity ([η]) is commonly used to characterize high polymers; but its determination is often complicated by adsorption of the high-polymer solute to the apparatus1. It has been widely assumed and has recently been categorically stated2 that adsorption effects can be neglected in the determination of the intrinsic viscosity of gelatin ...
J. W. JANUS, R. L. R. DARLOW
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The intrinsic viscosity of linear DNA

Biopolymers, 2011
AbstractWe measured the intrinsic viscosity of very small synthetic DNA molecules, of 20–395 base pairs, and incorporated them in a nearly complete picture for the whole span of molecular weights reported in the literature to date. A major transition is observed at M ∼ 2 × 106.
Achilleas, Tsortos, George, Papadakis, Electra, Gizeli   +2 more
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