Results 11 to 20 of about 3,121,912 (312)
Configurons: Thermodynamic Parameters and Symmetry Changes at Glass Transition [PDF]
Entropy, 2008 Thermodynamic parameters of configurons – elementary excitations resulting from broken bonds in amorphous materials – are found from viscosity-temperature relationships.
Michael I. Ojovan
doaj +2 more sources
Second-order Phase Transition Behavior behind Polymer Glass Transition [PDF]
, 2022 Glass transition has similarity to the second-order phase transition in temperature dependent changes in entropy, non-Arrhenius viscosity, and heat capacity of glass forming materials. However, it has primarily been considered to be not phase transition.
Taihei, Takahashi +4 more
core +2 more sources
Molecular Signatures of the Glass Transition in Polymers [PDF]
, 2022 The glass transition temperature (Tg) is one of the most fundamental properties of polymers. Tg is predicted as a sudden change in a “macroscopic” quantity (e.g. compressibility).
Connor, Coley +5 more
core +2 more sources
Orientational glass transition [PDF]
Ferroelectrics, 1996 The static behavior of orientational glasses is discussed in terms of a replica theory based on the infinite range random bond--random field model. A general version of the model applicable to dipolar and quadrupolar glasses is presented using a symmetry-adapted representation for the order parameter fields.
Pirc, R., Tadic, B., Blinc, R.
openaire +2 more sources
Polymer Relaxation Time Enhancement at Temperatures above Glass Transition Temperatures Predicted by Idealized Mode-Coupling Theory [PDF]
, 2022 The mode-coupling theory of glass transition predicts the relaxation time divergence of glass-forming materials at the crossover temperature, which is approximately 1.2 times the calorimetric glass transition temperature. However, this divergence has not
Risa, Fukase +5 more
core +2 more sources
All-atomistic molecular dynamics study of the glass transition of amorphous polymers [PDF]
, 2021 Glass transition is an important phenomenon of polymer materials and it has been intensively studied over the past a few decades. However, the influencing factors arising from the chemical structures of the polymers are often ignored due to a continuous ...
Zhiye, Tang, Susumu, Okazaki
core +1 more source
Mechanical relaxation in glasses and at the glass transition [PDF]
Physical Review B, 2001 The Gilroy-Phillips model of relaxational jumps in asymmetric double-well potentials, developed for the Arrhenius-type secondary relaxations of the glass phase, is extended to a formal description of the breakdown of the shear modulus at the glass transition, the flow process.
openaire +3 more sources
Water’s second glass transition [PDF]
Proceedings of the National Academy of Sciences, 2013 Significance Water is not only the most important liquid for life on Earth, but also one of the most anomalous liquids. These anomalies become most evident in the supercooled state at subzero temperatures. We show from dielectric and calorimetric studies that water in the deeply supercooled regime, below –120 °C ...
Katrin Amann-Winkel +6 more
openaire +3 more sources
Theories of glass formation and the glass transition [PDF]
Reports on Progress in Physics, 2014 This key-issues review is a plea for a new focus on simpler and more realistic models of glass-forming fluids. It seems to me that we have too often been led astray by sophisticated mathematical models that beautifully capture some of the most intriguing features of glassy behavior, but are too unrealistic to provide bases for predictive theories.
openaire +5 more sources
Microscopic versus Macroscopic Glass Transition(s) in Blends of Industrial Interest [PDF]
EPJ Web of Conferences, 2022 We investigate by neutron scattering and calorimetry a mixture of styrene-butadiene rubber (SBR) and a commercial resin. The neat materials present a large dynamic contrast, having SBR a much lower glass-transition temperature than the resin.
Shafqat Numera +7 more
doaj +1 more source