What question did this study set out to answer?

To evaluate the visco-elastic behavior and dynamic mechanical properties of rod-like macromolecule solutions subjected to periodic shear.

March 1, 1951The Journal of Chemical PhysicsOpen Access

The Visco-Elastic Properties of Solutions of Rod-Like Macromolecules

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Authors

JKJohn G. KirkwoodYale University PAPeter AuerGraz University of Technology

Discussion

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Implication

Theoretical analysis reveals how rotatory diffusion alters intrinsic viscosity and imparts rigidity to rod-like macromolecule solutions under periodic shear, indicating frequency-dependent stiffness.

Key Points

To evaluate the visco-elastic behavior and dynamic mechanical properties of rod-like macromolecule solutions subjected to periodic shear.
Applied the general statistical mechanical theory of irreversible processes to solutions containing rod-like macromolecules.
Calculated stress responses, rotatory diffusional torques, relaxation phase lag, intrinsic viscosity, and rigidity under oscillating shear waves across varying frequencies.
Rotatory diffusional torques contribute three-fourths (75%) of the total stationary intrinsic viscosity.
Application of periodic shear induces a relaxation phase lag in rotatory diffusion that imparts dynamic rigidity to the macromolecular solution.
As frequency increases, intrinsic viscosity drops to one-fourth (25%) of its stationary value, while the rigidity modulus rises to an asymptotic value of 3RT/5 per mole/cm³ of solute.

Cite This Study

Kirkwood et al. (1951) studied this question.

synapsesocial.com/papers/6a7be2144fcef545fadf8d5f https://doi.org/10.1063/1.1748194

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March 1, 1951The Journal of Chemical PhysicsOpen Access

The Visco-Elastic Properties of Solutions of Rod-Like Macromolecules

View Full Paper

Ask AI

Bookmark

Authors

JKJohn G. KirkwoodYale University PAPeter AuerGraz University of Technology

Discussion

Member takes

Implication

Theoretical analysis reveals how rotatory diffusion alters intrinsic viscosity and imparts rigidity to rod-like macromolecule solutions under periodic shear, indicating frequency-dependent stiffness.

Key Points

To evaluate the visco-elastic behavior and dynamic mechanical properties of rod-like macromolecule solutions subjected to periodic shear.
Applied the general statistical mechanical theory of irreversible processes to solutions containing rod-like macromolecules.
Calculated stress responses, rotatory diffusional torques, relaxation phase lag, intrinsic viscosity, and rigidity under oscillating shear waves across varying frequencies.
Rotatory diffusional torques contribute three-fourths (75%) of the total stationary intrinsic viscosity.
Application of periodic shear induces a relaxation phase lag in rotatory diffusion that imparts dynamic rigidity to the macromolecular solution.
As frequency increases, intrinsic viscosity drops to one-fourth (25%) of its stationary value, while the rigidity modulus rises to an asymptotic value of 3RT/5 per mole/cm³ of solute.

Cite This Study

Kirkwood et al. (1951) studied this question.

synapsesocial.com/papers/6a7be2144fcef545fadf8d5f https://doi.org/10.1063/1.1748194

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