J. Rieger, "The glass transition temperature Tg of polymers-comparison of the values from differential thermal analysis (DTA, DSC) and dynamic mechanical measurements (torsion pendulum)," Polym. Test., vol. 20, pp. 199- 204, 2001.Rieger J. The glass transition temperature Tg of polymers--...
The glass transition temperature (Tg) of conjugated polymers governs chain dynamics and mechanical properties. BelowTg, the storage moduli of conjugated polymers are on the order of one GPa, making the materials too stiff and too brittle for flexible devices1. At higher temperatures, the storage m...
To investigate the effect of the stoichiometry on the glass transition temperature, Tg, of an epoxy–amine system with excess of the amine or the epoxy. The stoichiometric ratio of amine to epoxy may be defined as r = |A|/|E|, where |A| and |E| are the number of gram-equivalents ...
To study the relationship between the degree of cure and the glass transition temperature, Tg, for different epoxy-anhydride resins. Two epoxy-anhydride systems were investigated, one with a reactive diluent and another without. The reactive diluent is used as an additive in epoxy resin formulations...
The industrial importance of the glass transition temperature, Tg, might be due to the dramatic changes in the physical properties of the polymer, such as hardness and elasticity, which take place in the vicinity of this temperature. However, perfectly crystalline polymers do not exhibit glass ...
Data will be presented which illustrate the utility of employing the Tg, temperature reference. The mechanisms of freezing will also be considered, since these may affect the final composition of the unfrozen matrix.DavidS.ReidWilliamKerrJulie...
Local dynamics of cis-1,4-polybutadiene near the glass transition temperature T(= 170 K) has been investigated by quasielastic neutron scattering in the energy range of 0.01 meV to 10 meV. It was found that two modes of motions appear near the Tin the energy range of ca. 1 meV and 10...
Ó2001ElsevierScienceB.V.Allrightsreserved. PACS:64.60.Qb;81.70.Pg 1.Introduction Theglasstransitiontemperature,T g ,isoneof thecharacteristicparametersofnon-crystalline materials.Theglasstransition,i.e.,thetransition fromastateofinternalequilibrium(supercooled liquid)intothenon-equilibriumstate(glass)and ...
Clayton ML, Gerasimov TG, Cinke M, Meyyappan M, Harmon JP (2004) Gamma radiation effects on the glass transition temperature and mechanical properties of PMMA/soot nanocomposites. Polym Bull 52:259–266Clayton, L. M. et al. " Gamma Radiation Effects on the Glass Transition Temperature and...
In part 1 of this study (see UserCom17), we presented an overview of the thermoanalytical techniques used for the determination of the glass transition. In this second part, we describe measurements performed using different TA techniques, compare the re