Ultra-fast chip calorimetry accessories for in operando structural studies of nanogram-sized samples

Fourth interdisciplinary scientific forum with international participation "New materials and promising technologies"

Rychkov, A.A.^1^2 ; Melnikov, A.P.^1^2^4 ; Rodygin, A.I.^1^2 ; Anokhin, D.V.^1^2^4 ; Rosenthal, M.^3 ; Ivanov, D.A.^1^2^4^5

Lomonosov Moscow State University, Faculty of Fundamental Physical and Chemical Engineering, Leninskie Gory 1/51, Moscow

119991, Russia^1

Moscow Institute of Physics and Technology (State University), Institutskiy per. 9, Dolgoprudny, Russia^2

European Synchrotron Radiation Facility, Grenoble

F-38043, France^3

Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast

142432, Russia^4

Institut de Sciences de Matériaux de Mulhouse-IS2M, CNRS UMR 7361, Jean Starcky, F-68057 15, Mulhouse, France^5

关键词: In-depth analysis;    Isotactic polypropylene;    Poly (trimethylene terephthalate);    Quantitative measurement;    Structural studies;    Structural transitions;    Structure formations;    Thermal analysis techniques;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/525/1/012047/pdf
DOI  :  10.1088/1757-899X/525/1/012047

来源: IOP

【 摘 要 】

Ultra-fast chip calorimetry is a modern thermal analysis technique based on MEMS-Type sensors, which allows performing quantitative measurements on samples of only a few nanograms. However, calorimetry alone is sometimes insufficient for in-depth analysis of complex phase transitions occurring during the experiment. Therefore, in-operando structural analysis was found to be helpful in deciphering the nature of the corresponding structural transitions. Here we report on design of accessories for in-operando synchrotron-based X-ray scattering experiments at low temperatures as well as under different atmospheres and humidities. The examples of applications in polymer physics include analysis of the double-melting behavior of poly(trimethylene terephthalate) and structure formation processes in isotactic polypropylene.