scholarly journals Attempts to Upcycle PET Wastes into Bio-based Long-lasting Insulating Materials

2019 ◽  
Vol 70 (7) ◽  
pp. 2301-2307
Author(s):  
Monica-Mirela Duldner ◽  
Emeric Bartha ◽  
Stanca Capitanu ◽  
Simona Nica ◽  
Alina Elena Coman ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Polyurethane Foams ◽  
Chemical Processes ◽  
Chemical Methods ◽  
Insulating Materials ◽  
Chemical Structures ◽  
Physical Chemical ◽  
Ft Ir ◽  
Organic Catalyst ◽  
Ft Ir Spectroscopy

Following the green chemistry principles, three series of polyols with tailored chemical structures were obtained from PET wastes degradation via glycolysis and/or aminolysis and subsequent esterification-transesterification and/or amidation reactions, using an organic catalyst. As cleaving agents there were used various mixtures of renewable or potentially renewable reagents, selected from those that can be obtained from biomass by already applied or investigated and eventually patented biochemical and/or chemical processes. The polyols were characterized by physical-chemical methods, 1H-NMR, 13C-NMR and FT-IR Spectroscopy, and tested in the synthesis of rigid polyurethane foams, showing appropriate properties for spray foams formation and leading to materials with properties similar to conventional spray foams.

Assessing molecular similarity/diversity of chemical structures by FT-IR spectroscopy

2001 ◽  
Vol 24 (4) ◽  
pp. 613-627 ◽  
Author(s):  
V. Schoonjans ◽  
F. Questier ◽  
Q. Guo ◽  
Y. Van der Heyden ◽  
D.L. Massart
Keyword(s):  
Ir Spectroscopy ◽  
Molecular Similarity ◽  
Chemical Structures ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

scholarly journals A facile and concise route to (hydroxybenzoyl)pyrido[2,3-d]pyrimidine heterocycle derivatives: synthesis, and structural, spectral and computational exploration

RSC Advances ◽  
2019 ◽  
Vol 9 (59) ◽  
pp. 34567-34580 ◽  
Author(s):  
Abida Ashraf ◽  
Muhammad Khalid ◽  
Muhammad Nawaz Tahir ◽  
Muhammad Yaqub ◽  
Muhammad Moazzam Naseer ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Ir Spectroscopy ◽  
X Ray Diffraction ◽  
Spectral Techniques ◽  
X Ray ◽  
Chemical Structures ◽  
Computational Exploration ◽  
Ft Ir ◽  
Ft Ir Spectroscopy ◽  
C Nmr

The chemical structures of the title compounds were ascertained by spectral techniques including 1H, 13C NMR, UV-vis and FT-IR spectroscopy as well as single-crystal X-ray diffraction, and DFT computation adopted to analyze the electronic structure.

scholarly journals Correction: Combining microfluidics and FT-IR spectroscopy: towards spatially resolved information on chemical processes

2016 ◽  
Vol 1 (6) ◽  
pp. 675-675 ◽  
Author(s):  
Adeline Perro ◽  
Gwenaelle Lebourdon ◽  
Sarah Henry ◽  
Sophie Lecomte ◽  
Laurent Servant ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Chemical Processes ◽  
Spatially Resolved ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Correction for ‘Combining microfluidics and FT-IR spectroscopy: towards spatially resolved information on chemical processes' by Adeline Perro et al., React. Chem. Eng., 2016, DOI: 10.1039/c6re00127k.

Combining microfluidics and FT-IR spectroscopy: towards spatially resolved information on chemical processes

2016 ◽  
Vol 1 (6) ◽  
pp. 577-594 ◽  
Author(s):  
Adeline Perro ◽  
Gwenaelle Lebourdon ◽  
Sarah Henry ◽  
Sophie Lecomte ◽  
Laurent Servant ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Ir Spectroscopy ◽  
Chemical Processes ◽  
Spatially Resolved ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

This review outlines the combination of infrared spectroscopy and continuous microfluidic processes.

scholarly journals The Preparation, Thermal Properties, and Fire Property of a Phosphorus-Containing Flame-Retardant Styrene Copolymer

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 127 ◽  
Author(s):  
Yu Sun ◽  
Yazhen Wang ◽  
Li Liu ◽  
Tianyuan Xiao
Keyword(s):  
Thermal Properties ◽  
Thermogravimetric Analysis ◽  
Flame Retardant ◽  
Oxygen Index ◽  
Limiting Oxygen Index ◽  
Chemical Structures ◽  
1H Nuclear Magnetic Resonance ◽  
Phosphorus Containing ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

A 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO) acrylate, (6-oxidodibenzo [c,e][1,2] oxaphosphinin-6-yl) methyl acrylate (DOPOAA), has been prepared. Copolymers of styrene (St) and DOPOAA were prepared by emulsion polymerization. The chemical structures of copolymers containing levels of DOPOAA were verified using Fourier transform infrared (FT-IR) spectroscopy and 1H nuclear magnetic resonance (1H-NMR) spectroscopy. The thermal properties and flame-retardant behaviors of DOPO-containing monomers and copolymers were observed using thermogravimetric analysis and micro calorimetry tests. From thermogravimetric analysis (TGA), it was found out that the T5% for decomposition of the copolymer was lower than that of polystyrene (PS), but the residue at 700 °C was higher than that of PS. The results from micro calorimetry (MCC) tests indicated that the rate for the heat release of the copolymer combustion was lower than that for PS. The limiting oxygen index (LOI) for combustion of the copolymer rose with increasing levels of DOPOAA. These data indicate that copolymerization of the phosphorus-containing flame-retardant monomer, DOPOAA, into a PS segment can effectively improve the thermal stability and flame retardancy of the copolymer.

Multiscale exploration of hydrocarbons adsorption and hopping through the ZSM-5 channels - from Monte Carlo modelling to experiment

2021 ◽  
Author(s):  
Maciej Strzempek ◽  
Karolina A. Tarach ◽  
Kinga Góra-Marek ◽  
Fernando Rey ◽  
Miguel Palomino ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Ir Spectroscopy ◽  
Aliphatic Hydrocarbons ◽  
Adsorption Studies ◽  
Ft Ir ◽  
Gravimetric Adsorption ◽  
Hydrocarbons Adsorption ◽  
Ft Ir Spectroscopy

Abstract In this article the results of the statistical MC modelling corroborated by the FT-IR spectroscopy and gravimetric adsorption studies of the low aliphatic hydrocarbons in ZSM-5 (Si/Al =28 or...

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