Simulataneous application of charge coupled device array-detected Raman spectroscopy and differential scanning calorimetry to in situ investigation of phase transitions in condensed matter

1992 ◽  
Vol 88 (18) ◽  
pp. 2717 ◽  
Author(s):  
Mauno E. E. Harju ◽  
Jussi Valkonen ◽  
Upali A. Jayasooriya ◽  
Daniel Wolverson
Keyword(s):  
Differential Scanning Calorimetry ◽  
Raman Spectroscopy ◽  
Phase Transitions ◽  
Condensed Matter ◽  
Scanning Calorimetry ◽  
Charge Coupled Device ◽  
In Situ Investigation

Solid−Solid Phase Transitions indl-Norvaline Studied by Differential Scanning Calorimetry and Raman Spectroscopy

2010 ◽  
Vol 114 (3) ◽  
pp. 1294-1300 ◽  
Author(s):  
Petros Chatzigeorgiou ◽  
Nikos Papakonstantopoulos ◽  
Nikolitsa Tagaroulia ◽  
Evangelos Pollatos ◽  
Pantelis Xynogalas ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Raman Spectroscopy ◽  
Phase Transitions ◽  
Solid Phase ◽  
Scanning Calorimetry

The investigations of phase transitions in the (1-x)PbZrO3-xBiFeO3 nanocrystals using differential scanning calorimetry and Raman spectroscopy

2018 ◽  
Vol 124 (5) ◽  
pp. 054102 ◽  
Author(s):  
M. Podgórna ◽  
M. Ptak ◽  
M. Chrunik ◽  
I. Jankowska-Sumara ◽  
J. Piecha ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Raman Spectroscopy ◽  
Phase Transitions ◽  
Scanning Calorimetry

PHYSICAL PROPERTIES OF TELLURITE GLASSES PREPARED UNDER DIFFERENT THERMAL HISTORIES

2010 ◽  
Vol 24 (06) ◽  
pp. 527-537
Author(s):  
E. B. ARAÚJO ◽  
E. IDALGO ◽  
A. P. A. MORAES ◽  
A. G. SOUZA FILHO ◽  
J. MENDES FILHO
Keyword(s):  
Differential Scanning Calorimetry ◽  
Raman Spectroscopy ◽  
Glass Transition ◽  
Tellurite Glasses ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
In Situ Crystallization ◽  
Thermal Histories

Tellurite glasses were prepared with identical 20 Li 2 O -80 TeO 2 nominal compositions but with different thermal histories. Differential scanning calorimetry (DSC), X-ray diffraction (XRD) and Raman spectroscopy techniques were used to understand the effects of the thermal histories on the thermal and structural properties of these glasses. It was observed that investigated properties depend strongly on the thermal histories. DSC results suggested that annealing immediately after quenching at temperatures around the glass transition temperature (Tg) and for longer times is favorable for producing local ordered regions in the glass without necessarily increasing the number of nuclei. XRD results revealed the crystallization of the γ- TeO 2, α- TeO 2 and α- Li 2 Te 2 O 5 phases in both studied glasses. Raman spectroscopy revealed the mestastable character of the γ- TeO 2 crystalline phase, while the α- TeO 2 and α- Li 2 Te 2 O 5 crystalline phases persisted up to the final stages of the in-situ crystallization.

scholarly journals Identification of LDPE Grades Focusing on Specific CH2 Raman Vibration Modes

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Richard Jumeau ◽  
Patrice Bourson ◽  
Michel Ferriol ◽  
François Lahure ◽  
Marc Ponçot ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Raman Spectroscopy ◽  
Vibrational Spectroscopy ◽  
Phenomenological Model ◽  
Low Density ◽  
Vibration Modes ◽  
Scanning Calorimetry ◽  
Lamella Thickness ◽  
Poly Ethylene

The possibilities of applications of vibrational spectroscopy techniques (Raman spectroscopy) in the analysis and characterization of polymers are more and more used and accurate. In this paper, our purpose is to characterize Low Density Poly(Ethylene) (LDPE) grades by Raman spectroscopy and in particular with CH2 Raman vibration modes. With temperature measurements, we determine different amorphous and crystalline Raman assignments. From these results and on the basis of the evolution of CH2 bending Raman vibration modes, we develop a phenomenological model in correlation with Differential Scanning Calorimetry and in particular with crystalline lamella thickness determination.

Differential scanning calorimetry of phase transitions in (CnH2n+1NH3)2MnCl4 compounds

1975 ◽  
Vol 17 (10) ◽  
pp. 1221-1222 ◽  
Author(s):  
E.H. Bocanegra ◽  
M.J. Tello ◽  
M.A. Arriandiaga ◽  
H. Arend
Keyword(s):  
Differential Scanning Calorimetry ◽  
Phase Transitions ◽  
Scanning Calorimetry
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