D
Donald J. Plazek
Researcher at University of Pittsburgh
Publications - 79
Citations - 6337
Donald J. Plazek is an academic researcher from University of Pittsburgh. The author has contributed to research in topics: Creep & Viscoelasticity. The author has an hindex of 36, co-authored 79 publications receiving 6000 citations.
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Nonexponential relaxations in strong and fragile glass formers
TL;DR: In this article, a broad correlation of non-debye behavior with non-Arrhenius relaxations was found for different types of glass formers, distinguished by their respective molecular complexity.
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Correlation of polymer segmental chain dynamics with temperature-dependent time-scale shifts
Donald J. Plazek,K. L. Ngai +1 more
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Identification of Different Modes of Molecular Motion in Polymers That Cause Thermorheological Complexity
K. L. Ngai,Donald J. Plazek +1 more
TL;DR: In this paper, the viscoelastic properties of amorphous polymers are reviewed with emphasis on the glass to rubber dispersion (often referred to as the transition zone).
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Physical Properties of Aromatic Hydrocarbons. I. Viscous and Viscoelastic Behavior of 1:3:5‐Tri‐α‐Naphthyl Benzene
TL;DR: The torsional creep and recovery behavior of amorphous 1,3,5−tri-α-naphthyl benzene was studied, while at metastable equilibrium density, along a specified glassy volume-temperature line, and during isothermal volume contraction below the conventional glass transition temperature Tg as mentioned in this paper.
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Volume and enthalpy recovery of polystyrene
TL;DR: In this article, the authors used the Tool-Narayanswamy-Moynihan model of structural recovery to study the physical aging behavior of polystyrene polycarbonates.