The transition points in the liquid state and their molecular modeling

Hlaváček, B.; Černošková, E.; Prokůpek, Luboš; Večeřa, M.

doi:10.1016/0040-6031(95)02783-1

Cited by 7 publications

(2 citation statements)

References 40 publications

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“…4 However, the full extent of nonlinearity ͑existence of double frequencies, double amplitudes, and random pulses in liquid matrices͒ has been investigated only recently. 36, 37 Goldstein, Frenkel and Prigogine 3,4,34,35 have considered with the nonlinearity onset, the smooth changes in basic frequencies of oscillators only.…”

Section: ͑1͒mentioning

confidence: 99%

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The anharmonicity of motion in the liquid state and its consequences

Hlaváček

Kresalek

Souček

1997

The Journal of Chemical Physics

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Fundamental aspects of quantum Brownian motion Chaos 15, 026105 (2005); 10.1063/1.1853631 Quantum Brownian motion and its conflict with the second law AIP Conf.The Brownian motion in connection to anharmonic oscillations of particles is taken as a basic property associated with a liquid state. The T g , T m transitions are discussed in this context. It is shown that consideration of anharmonicity leads to the strong fluctuations in amplitudes and densities, as well as to the coexistence of double values of amplitudes and strong vibrational pulses randomly distributed in a liquid matrix. The analyses of T g , T m , or T B transitions by use of the anharmonic oscillator approach allow us to use similar mathernatical tools which are so successfully used in the Voltera-Prigogine type of thermodynamics. In spite of the fact that the anharmonicity effect has already been investigated before, the full impact of ''S'' shaped amplitude hystereses on the partition function is worked out in more detail in the present paper.

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Section: ͑1͒mentioning

confidence: 99%

“…The structures corresponding to the Van der Waals equation, Peng-Robinson equation, and Dieterici equation have been shown elsewhere. 36 Figure 11 shows the structure above T C , where the volume VϾV C Ϸ4b.…”

Section: ͑23͒mentioning

confidence: 99%

The anharmonicity of motion in the liquid state and its consequences

Hlaváček

Kresalek

Souček

1997

The Journal of Chemical Physics

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Mechanical behavior of polymer microlayers

Kerns

Hsieh

Hiltner

et al. 1999

Macromolecular Symposia

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The mechanical behavior of polycarbonate (PC) coextruded as microlayers with a brittle polymer, either poly(styrene-co-acrylonitrile) (SAN) or poly(methy1 methacrylate) (PMMA), was examined. Adhesion between layers was measured with the T-peel method. The much higher interfacial toughness of PCPMMA microlayers compared to PC/SAN was attributed to partial miscibility. Comparison of the microdeformation behavior of 32-layer PC/SAN and PCPMMA microlayers revealed that very good adhesion between PC and PMMA constrained yielding of the PC. This was seen in the tensile stress-strain curves as a broader stress drop at the yield point and a lower fracture strain. Decreasing the layer thickness by increasing the number of layers enhanced the ductility of both PC/SAN and PCPMMA microlayers. A PC/PMMA microlayer with 4096 layers and a composition of 80 % PC achieved the ballistic performance of polycarbonate.

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