Results 261 to 270 of about 6,683,310 (305)
Some of the next articles are maybe not open access.
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
openaire +1 more source
The glass transition temperature of polystyrene
Journal of Thermal Analysis, 1996A round robin test was performed to determine the reliability of values for the glass transition temperatureTg as determined by DTA on polymers. Ten different instruments were involved. The test material was high molecular weight polystyrene. Values forTg (midpoint) were reported in the range 107°C±2 K.
openaire +1 more source
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
openaire +1 more source
Glass Transition Temperature and Other Transitions
1993The glass transition temperature (Tg) is defined as the temperature at which a material loses its glasslike, more rigid properties and becomes rubbery and more flexible in nature. Practical definitions of Tg differ considerably among different measurement methods; therefore, specification of Tg requires indication of the method used.
openaire +1 more source
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
openaire +1 more source
Viscosity of fluoride glasses at glass transition temperature
Journal of Non-Crystalline Solids, 1990Abstract The viscosities of some fluoride glasses were measured by the penetration method in the glass transition temperature range, and the glass transition temperature was determined from DSC as a function of the heating rate. It was concluded that the viscosity at the glass transition temperature increases as the heating rate decreases ...
Manabu Koide +2 more
openaire +1 more source
The glass transition temperature versus the fictive temperature
Journal of Non-Crystalline Solids, 2007AbstractA comparison of the values of the glass transition temperature (T g ) measured on cooling and the limiting fictive temperature ðT 0f Þmeasured on heating as a function of cooling rate is performed for a polystyrene sample using both capillary dilatometry and differentialscanning calorimetry (DSC).
Prashanth Badrinarayanan +3 more
openaire +1 more source
Glass Transition Temperatures of Dental Porcelain
Journal of Dental Research, 1981C W, Fairhurst +2 more
openaire +2 more sources
Glass transition temperature of citric acid
Journal of Pharmaceutical Sciences, 1980M P, Summers, R P, Enever
openaire +2 more sources