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The glass transition temperatures of sugar mixtures
Carbohydrate Research, 2006We measured the glass transition temperatures of mono-, di-, and trisaccharide mixtures using differential scanning calorimeter (DSC) and analyzed these temperatures using the Gordon-Taylor equation. We found that the glass transition temperatures of monosaccharide-monosaccharide and disaccharide-disaccharide mixtures could be described by the ...
Jeong-Ah, Seo +5 more
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Glass-Transition Temperature of Water
Science, 1969The glass-transition temperature of water (T g ) has been calculated by use of the Tammann-Hesse viscosity equation with the viscosity equal to 10 13 poise at T g .
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Glass Transition Temperatures of Copolymers
Rubber Chemistry and Technology, 1958AbstractThe Gordon‐Taylor equation relating the glass transition temperature θ of a copolymer to the glass transition temperatures θ1 and θ2 of the homopolymers is equivalent to where c1 and c2 are the weight fractions of the constituents and A1 and A2 are constants. It can be recast into the following forms suitable for linear plots and where
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When Does a Glass Transition Temperature Not Signify a Glass Transition?
ACS Macro Letters, 2014We present a simple model that links enhanced mobility at the free surface to the dilatometric glass transition temperature, Tg in thin films. The model shows that what is typically measured as a dilatometric Tg, characterized by the hallmark "kink" in the plot of film thickness versus temperature, only represents the dynamics of an infinitesimally ...
J A, Forrest, K, Dalnoki-Veress
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Glass transition temperature in nylons
Polymer, 1976Abstract The determination of the glass transition temperature of semi-crystalline polymers is a controversial problem in the literature, because of the complexity of the phenomenon and of the different methods used for its measurement. In this work the glass transition temperatures of five commercial nylons (nylon-6, nylon-6,6, nylon-6,10, nylon-11,
R. Greco, L. Nicolais
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Transitions in glasses at low temperatures
Journal of Macromolecular Science, Part B, 1967Transitions in glasses at low temperatures, noting molecular relaxation dependence on copolymer ...
Robert A. Haldon +2 more
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A Thermodynamical Criterion for the Glass-Transition Temperature
Transactions of the Society of Rheology, 1977A study, based upon the Gibbs free energy, is made of the thermodynamical behaviour of dissipative and memory-dependent materials. The creep-function mechanical properties involved are generalizations of the usual volumetric compressibility, the coefficient of thermal expansion, and the specific heat at constant pressure.
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Structure and glass transition temperatures of tellurite glasses
Physics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B, 2020Tellurite glasses, made from the conditional glass former TeO2, show potential for use in optical applications. Alkali and alkaline earth tellurite glasses, along with single component, rapidly cooled, TeO2 are reported and studied here. Thermal properties of boron, potassium, lithium, sodium, rubidium, cesium, barium, and strontium tellurites were ...
B. Hauke +8 more
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Glass transition temperatures of copolyphosphates
Colloid and Polymer Science, 1979Values of glass transition temperature (T g ) for several samples of sodium copolyphosphates were determined by DSC measurements. Their dependence on a number of factors has been considered. Contrary to the observations ofEisenberg et al.T g does not depend entirely on the ratio of ...
H. N. Bhargava +2 more
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The glass transition temperature of silicate and borate glasses
Journal of Non-Crystalline Solids, 2005The dependence of the glass transition temperature on silicate composition as well as on borate composition is discussed. Some new experimental results on borosilicate glass-enamels are put together with the existing literature data. It is demonstrated that in the glass transition interval the activation energy E(Tg) for viscous flow is related to the ...
I. Avramov, Ts. Vassilev, I. Penkov
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