Results 21 to 30 of about 703,544 (344)

Correlation between fragility and free volume void size at glass transition temperature

open access: yesAIP Advances, 2022
Despite the tremendous endeavors devoted to exploiting the nature of glass transition, the factors that control the steepness index of viscosity near glass transition, that is, fragility, remain unclear.
Qingli Ma   +7 more
doaj   +1 more source

Non-linear properties of supercooled liquids in the system Na2O---SiO2 [PDF]

open access: yes, 1994
The physical properties, viscosity, density, heat capacity and thermal expansivity, of relaxed supercooled liquids in the temperature range just above the glass transition have been determined for ten compositions along the compositional binary Na2O ...
Dingwell, Donald B.   +3 more
core   +1 more source

A novel method for characterizing temperature-dependent elastic modulus and glass transition temperature by processing the images of bending cantilever slender beams at different temperatures

open access: yesAIP Advances, 2018
We propose a novel method for estimating the elastic modulus of several materials by processing the bending image of cantilever material sheets. The calculated results (tested for five samples) were consistent with data obtained by direct measurement ...
Nadya Amalia   +6 more
doaj   +1 more source

Hydrogen-Bonds Structure in Poly(2-Hydroxyethyl Methacrylate) Studied by Temperature-Dependent Infrared Spectroscopy

open access: yesFrontiers in Chemistry, 2014
Hydrogen-bonds structure in poly(2-hydroxyethyl methacrylate) (PHEMA) were investigated by means of temperature-dependent infrared (IR) spectroscopy. Spectral variations involved with the OH•••OH and C=O•••HO types of hydrogen-bonds were found around the
Shigeaki eMorita
doaj   +1 more source

Droplets and the configurational entropy crisis for random first order transitions [PDF]

open access: yes, 2002
We consider the effect of droplet excitations in the random first order transition theory of glasses on the configurational entropy. The contribution of these excitations is estimated both at and above the ideal glass transition temperature.
Eastwood, M. P., Wolynes, P. G.
core   +1 more source

Coamorphous Systems of Valsartan: Thermal Analysis Contribution to Evaluate Intermolecular Interactions Effects on the Structural Relaxation

open access: yesMolecules, 2023
Coamorphous formation in binary systems of valsartan (Val) with 4,4′-bipyridine (Bipy) and trimethoprim (Tri) was investigated for mixtures with a mole fraction of 0.16~0.86 of valsartan and evaluated in terms of the glass transition temperature.
Bruno Ekawa   +4 more
doaj   +1 more source

Effects of Annealing on Enthalpy Recovery and Nanomechanical Behaviors of a La-Based Bulk Metallic Glass

open access: yesMetals, 2021
Structural relaxation and nanomechanical behaviors of La65Al14Ni5Co5Cu9.2Ag1.8 bulk metallic glass (BMG) with a low glass transition temperature during annealing have been investigated by calorimetry and nanoindentation measurement.
Ting Shi, Lanping Huang, Song Li
doaj   +1 more source

Structural Probe of a Glass Forming Liquid: Generalized Compressibility [PDF]

open access: yes, 2002
We introduce a new quantity to probe the glass transition. This quantity is a linear generalized compressibility which depends solely on the positions of the particles.
A. Rinaldi   +39 more
core   +1 more source

Thermal relaxation of optical nonlinearity in poled glasses

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2020
The thermal relaxation of second order optical nonlinearity in subsurface layer of a poled soda-lime silicate glass was studied. It is shown that the glass annealing below glass transition temperature leads to full relaxation of the nonlinearity.
Reshetov Ilya   +4 more
doaj   +1 more source

Viscoelastic behavior of carboxyl-terminated (butadiene-co-acrylonitrile)-based composite propellant binder containing polyglycidyl-type bonding agent [PDF]

open access: yesHemijska Industrija, 2016
The influence of tris(2,3-epoxypropyl) isocyanurate as bonding agent on the physico-chemical, viscoelastic and uniaxial tensile mechanical properties of carboxyl-terminated (butadiene-co-acrylonitrile) cured with the polyglycidyl ether of ...
Brzić Saša J.   +5 more
doaj   +1 more source

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