Measurement of glass transition temperature

The Glass Transition Temperature (Tg) oi the polymers was measured by differential scanning calorimetry, with a DSC-822e (Mettler-Toledo) apparatus, by using samples of pol5mier films. The samples were heated at the rate of 10°C/min under nitrogen to above 300°C. Heat flow versus temperature scans from the second heating run was plotted and used for 

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The value of measurements of glass transition temperatures C.M. Neag has provided a concise example of how measurements of glass transition temperatures by DSC can help determine the comparative property differences of a group of related materials [44] ... 

Measurement of Glass Transition Temperature (Tg). obtained polymers were measured by DSC analysis (Du Pont Inc., 910 model) at a heating rate of 20°C/min. 

Measurements of glass transition temperatures at high pressure were made indirectly using, in particular, creep compliance [95, 96] or directly using differential scanning calorimetric techniques [97, 98]. The measured depression reaches values as high as 60°C for poly(methyl methacrylate) and polystyrene. 

Finally, it is also worth mentioning that measurements of glass transition temperatures were carried out on model networks. It was shown that T% increases linearly with the reciprocal of the molecular weight of the elastic chains, for a series of homologous networks. The slope of the lines is the steeper, the higher the functionality of the crosslinks67. ... 

Her LM, Nail SL. Measurement of glass transition temperatures of freezeconcentrated solutes by differential scanning calorimetry. Pharm Res 1994 11 54-59. 

Porter SC, Ridgway K. An evaluation of the properties of enteric coating polymers measurement of glass transition temperature. J Pharm Pharmacol 1983 35 341-344. 

Thermal Characterization. The DuPont 941 Thermal Mechanical Analyzer (TMA), attached to a model 900 thermal analyzer, was used for the measurement of glass transition temperature (Tg). The heating rate was set at 10 C/min. For wet samples, about 0.05 ml of distilled water was dropped into the TMA sample holder tube before running the experiments, to maintain the sample in a water saturated state during the measurement. 

Properties relating to performance of completely cured adhesive were determined by mechanical spectroscopy and thermomechanical analysis. Measurement of glass transition temperature and coefficient of thermal expansion was obtained from temperature scanning. 

Agroui, K., Collins, G., Earenc, J. Measurement of glass transition temperature of crosslinked EVA encapsulant by thermal analysis for photovoltaic application. Renew. Energy 43, 218-223 (2012)... 

Figure 13.3 Thermomechanical analysis of epoxy resins. Measurements of glass transition temperature. Source Author s own files)...

Measurement of storage modulus Measurement of viscoelastic and mechanical properties Measurement of glass transition temperature... 

Measurement of Glass Transition Temperature and other Transitions... 

Seveik A, Klepal V, Betakova S, Sionova Z. Contribution to method for measurement of glass transition temperature and brittle temperature in rubber materials. In IRC Conference, Prague, 1-4 July, 2002 p. 9. Proceeding Paper 69. 

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