Glass transition temperature versus structure of polyamide 6: A flash-DSC study
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چکیده
منابع مشابه
The glass transition process in humid biopolymers. DSC study
Thermal properties of native and denatured biopolymers with quite different chemical and steric structure (globular and fibrillar proteins, DNA, starches) were studied by means of differential scanning calorimetry in a wide range of temperatures and concentrations of water. It was shown that both native and denatured humid biopolymers are glassy systems. The glass transition temperature of thes...
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A single relaxation time model is used to describe the kinetics of enthalpy relaxation of glassforming systems subjected to a temperature modulated cooling or heating. There are two time scales of the measurement, a short one fixed by the modulation frequency and a slow one, determined by the average heating or cooling rate. It is demonstrated that the maximal respond of the system appears when...
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The experimental technique offered by temperature-modulated differential scanning calorimeter (TMDSC) used to investigate the thermal relaxation dynamics through the glass transition as a function of frequency was studied for pure PMMA and PMMA-single wall carbon nanotubes (SWCNTs) composites. A strong dependence of the temperature dependence peak in the imaginary part of complex heat capacity ...
متن کاملGlass-transition temperature of water: a simulation study.
We report a computer simulation study of the glass transition for water using the extended simple point charge potential. To mimic the difference between standard and hyperquenched glass, we generate glassy configurations with different cooling rates, and we calculate the temperature dependence of the specific heat on heating. The absence of crystallization phenomena allows us, for properly ann...
متن کاملThe Glass Transition Temperature of Water: A Simulation Study
Nicolas Giovambattista, C. Austen Angell, Francesco Sciortino and H. Eugene Stanley Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts 02215. Dept. of Chemistry and Biochemistry Arizona State University, Tempe, AZ 85287 USA and Dipartimento di Fisica, Istituto Nazionale per la Fisica della Materia, and I.N.F.M. Center for Statistical Mechanics and Com...
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ژورنال
عنوان ژورنال: Thermochimica Acta
سال: 2017
ISSN: 0040-6031
DOI: 10.1016/j.tca.2017.09.021