Glass transition temperature of polymers

Tsui, O. K. C. and Zhang, H. F. (2001) Effects of chain ends and chain entanglement on the glass transition temperature of polymer thin films. Macromolecules, 34, 9139—9142. 

Rate Dependence of the Glass Transition Temperature of Polymer Melts A Molecular Dynamics Study. 

Liu A, Wang X, Wang L et al. (2007) Prediction of dielectric constants and glass transition temperatures of polymers by quantitative structure-property relationships. Eur Polym J 43 989-995... 

Elemental analyses were carried out at Childers Laboratories, and the glass transition temperatures of polymers were measured by Carothers, J. A. of our laboratory. 

In DSC the measured energy differential corresponds to the heat content (enthalpy) or the specific heat of the sample. DSC is often used in conjunction with TA to determine if a reaction is endothermic, such as melting, vaporization and sublimation, or exothermic, such as oxidative degradation. It is also used to determine the glass transition temperature of polymers. Liquids and solids can be analyzed by both methods of thermal analysis. The sample size is usually limited to 10-20 mg. 

Chow TS (1980) Macromolecular interpretation of the glass-transition temperature of polymer-diluent systems. Macromolecules 13 362-364... 

Tg°° glass transition temperature of polymer with infinite molecular weight... 

Tgm glass transition temperature of polymer in mixture with a solvent at a particular solvent mass fraction 5.1.2... 

DiBenedetto, A. K. (2003), Prediction of the glass transition temperature of polymers A model based on the principle of corresponding states, J. Polym. Sci. Part B Polym. Phys., 25(9), 1949-1969. 

Ten Brinke, G., Karasz, F.E., and Ellis, T.S. (1983). Depression of glass transition temperatures of polymer networks by diluents. Macromolecules, 16, 244-299. 

The transition temperatures observed in the dry experiment for various polymers coincided with the glass transition temperatures of polymers. This finding is in accordance with the process in which the segmental mobility plays the major role. However, the transition temperature found in water always occurred at around 15°C and was independent of the glass transition temperature of the polymer as... 

While the determination of the glass transition temperature of polymer stationary phases by inverse gas chromatt t lqf seems well-establiriied, several authors 11,15, 2 7) reported the failure of the technique to detect known transitions. In-... 

Assuming that the chain ends have more free volume than monomers in the middle of the chain, derive the molar mass dependence of the glass transition temperature of polymer melts [Eq. (8.135)]. 

C. It is important to know the glass transition temperature of polymer adhesive layers when high-temperature strain is to be expected. 

Tgp Glass transition temperature of polymer, in degrees Kelvin. 

P. Peyser Glass Transition Temperatures of Polymers, in Polymer Handbook, 3rd ed., J. Brandrup and E. Immergut, eds., Wiley Interscience, New York, pp. VI209-VI 277. 

The data is recorded and can be plotted at the computer. From these DSC plots, thermal events such as melting points, phase change temperatures, chemical reaction temperatures and glass transition temperature of polymers can be determined. An endothermic peak is plotted in the upward direction and an exothermic peak in the downward direction... 

Table 3.2 Selected Values of Glass Transition Temperature of Polymers and Their Mechanical Characteristics at Room Temperature...

The thermal resistance of latex-modifled mortar and concrete is governed by the nature, especially glass transition temperature of polymers used, polymer-cement ratio, and heating conditions, and ultimately by the thermal degradation of the polymers. Figure 4.59f l indicates the thermal resistance of SBR-, PAE-, and EVA-modified mortars at 100 to 200°C. The flexural strength of most latex-modified mortars at 100°C tends to initially... 

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