Thermal stability of chemically bonded phases on silica gel by photoacoustic FT-IR spectroscopy

2006 ◽  
Vol 137 ◽  
pp. 291-295 ◽  
Author(s):  
A. Kierys ◽  
S. Pasieczna ◽  
J. Ryczkowski ◽  
J. Goworek
Keyword(s):  
Thermal Stability ◽  
Ir Spectroscopy ◽  
Silica Gel ◽  
Chemically Bonded Phases ◽  
Bonded Phases ◽  
Ft Ir ◽  
Thermal Stability Of ◽  
Ft Ir Spectroscopy

scholarly journals Honey bee odorant-binding protein 14: effects on thermal stability upon odorant binding revealed by FT-IR spectroscopy and CD measurements

2013 ◽  
Vol 43 (2-3) ◽  
pp. 105-112 ◽  
Author(s):  
Andreas Schwaighofer ◽  
Caroline Kotlowski ◽  
Can Araman ◽  
Nam Chu ◽  
Rosa Mastrogiacomo ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Ir Spectroscopy ◽  
Honey Bee ◽  
Binding Protein ◽  
Odorant Binding Protein ◽  
Ft Ir ◽  
Odorant Binding ◽  
Ft Ir Spectroscopy

Preparation of Polyaniline/SiO2 Composites by Modified Silica Using Succinic Acid

2012 ◽  
Vol 535-537 ◽  
pp. 149-153 ◽  
Author(s):  
Er Yuan Li ◽  
Xiu Feng Wang ◽  
Xue Zhi Wang ◽  
Hao Wang
Keyword(s):  
Thermal Stability ◽  
Succinic Acid ◽  
X Ray Diffraction ◽  
Modified Silica ◽  
X Ray ◽  
Surface Character ◽  
Ft Ir ◽  
Thermal Stability Of ◽  
Scanning Electron ◽  
Ft Ir Spectroscopy

Polyaniline/SiO2 composites were prepared by the SiO2 particles whose surface character was modified by succinic acid. The composites were characterized by Fourier transform infrared (FT–IR) spectroscopy, X–ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscope (SEM). The results demonstrated that the thermal stability of PANI had improved.

ChemInform Abstract: A Convenient Determination of Surface Hydroxyl Group on Silica Gel by FT-IR Spectroscopy.

ChemInform ◽  
2010 ◽  
Vol 23 (1) ◽  
pp. no-no
Author(s):  
K. YOSHINAGA ◽  
M. RIKITAKE ◽  
T. KITO ◽  
Y. YAMAMOTO ◽  
H. EGUCHI ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Silica Gel ◽  
Hydroxyl Group ◽  
Surface Hydroxyl ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

A Convenient Determination of Surface Hydroxyl Group on Silica Gel by FT-IR Spectroscopy

1991 ◽  
Vol 20 (7) ◽  
pp. 1129-1132 ◽  
Author(s):  
Kohji Yoshinaga ◽  
Masaru Rikitake ◽  
Taketoshi Kito ◽  
Yukiko Yamamoto ◽  
Hiroshi Eguchi ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Silica Gel ◽  
Hydroxyl Group ◽  
Surface Hydroxyl ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

scholarly journals Vapochromism in Complexes of Stoichiometry [Au2Ag2R4L2]n

2009 ◽  
Vol 64 (11-12) ◽  
pp. 1500-1512 ◽  
Author(s):  
Eduardo J. Fernández ◽  
Antonio Laguna ◽  
José M. López-de-Luzuriaga ◽  
M. Elena Olmos ◽  
Raquel C. Puelles
Keyword(s):  
Thermal Stability ◽  
Thermogravimetric Analysis ◽  
Ir Spectroscopy ◽  
Gas Phase ◽  
X Ray Diffraction ◽  
X Ray ◽  
Polymeric Chains ◽  
Ft Ir ◽  
Aurophilic Interactions ◽  
Ft Ir Spectroscopy

Reaction of [NBu4][Au(C6X5)2] (C6X5 = 3,5-C6Cl2F3, C6Cl5) with AgOClO3 in an Et2O/CH2Cl2 mixture affords [Au2Ag2(C6X5)4(OEt2)2]n [C6X5 = 3,5-C6Cl2F3 (1a), C6Cl5 (1b)]. These compounds react with tetrahydrofuran, acetone, acetonitrile or toluene in solution and in the gas phase (with toluene only in solution) to the new complexes [Au2Ag2(C6X5)4L2]n [L = THF (2a, 2b), (CH3)2CO (3a, 3b), CH3CN (4a, 4b), C7H8 (5a, 5b)]. The crystal structures of 2a and 5a have been determined by X-ray diffraction methods, showing polymeric chains formed by the union of tetranuclear Au2Ag2 units via aurophilic interactions. The thermal stability and the vapochromic behaviour of these complexes have been studied by thermogravimetric analysis (TGA), X-ray powder diffraction and FT-IR spectroscopy

scholarly journals Effect of the Addition of Biobased Polyols on the Thermal Stability and Flame Retardancy of Polyurethane and Poly(Urea)Urethane Elastomers

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1805
Author(s):  
Kamila Mizera ◽  
Kamila Sałasińska ◽  
Joanna Ryszkowska ◽  
Maria Kurańska ◽  
Rafał Kozera
Keyword(s):  
Thermal Stability ◽  
Flame Retardancy ◽  
Fossil Fuels ◽  
Structural Characteristics ◽  
Cone Calorimetry ◽  
Current Trends ◽  
Ft Ir ◽  
The Impact ◽  
Thermal Stability Of ◽  
Ft Ir Spectroscopy

Due to the current trends in sustainable development and the reduction in the use of fossil fuels (Green Deal strategy and the circular economy), and thus, the increased interest of the polyurethane industry in polyols derived from renewable sources, it is important to study the impact of these polyols on the flammability of new bioelastomers. The goal of this study was to check the influence of biobased polyols, such as tall oil (TO)-based polyols, soybean oil (SO)-based polyol, and rapeseed oil (RO)-based polyol, on the reduction in the burning and fume emissions of polyurethane and poly(urea)urethane elastomers (EPURs and EPUURs). The thermal stability of these materials was tested using thermogravimetric analysis (TGA). In turn, the flame retardancy and smoke emissions were checked using a cone calorimetry test. The released gases were identified using TGA coupled with Fourier transform infrared (FT-IR) spectroscopy (TGA/FT-IR). Moreover, the morphological and structural characteristics of the char residues were characterized using FT-IR and scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS). The obtained data were compared to the results received for elastomers produced with petroleum substrates. The addition of biobased polyols led to a reduction in the burning as a result of the formation of char, especially RO polyol. Moreover, the TO and RO polyols increased the thermal stability of the elastomers.

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