Results 21 to 30 of about 64,940 (304)

A TGA/FTIR and Mass Spectral Study on the Thermal Degradation of Bisphenol A Polycarbonate [PDF]

open access: yes, 2004
The thermal degradation of polycarbonate under nitrogen was studied using TGA/FTIR, GC/MS and LC/MS as a function of mass loss. The gases evolved during degradation were inspected by in situ FTIR and then the evolved products were collected and analysed ...
Jang, Bok Nam, Wilkie, Charles A.
core   +2 more sources

Isobaric Vapour Liquid Equilibrium at 101.3 kPa for the Binary Mixtures 2-Methyl-2-Butene / Methanol and Isopentane / Methanol

open access: yesChemical Engineering Transactions, 2013
Due to the increased interest for using tertiary ethers as fuel additives (such as TAME – tert-amyl-methyl-ether synthesis), the research intensified to study its thermodynamic aspects.
M. Bernabeu Diaz   +4 more
doaj   +1 more source

Experimental and modeling study of the autoignition of 1-hexene/iso-octane mixtures at low temperatures [PDF]

open access: yes, 2005
Autoignition delay times have been measured in a rapid compression machine at Lille at temperatures after compression from 630 to 840 K, pressures from 8 to 14 bar, \Phi = 1 and for a iso octane/1 hexene mixture containing 82% iso-octane and 18% 1 hexene.
Barbé   +33 more
core   +3 more sources

The Thermal degradation of Bisphenol A Polycarbonate in Air [PDF]

open access: yes, 2005
The thermal degradation of polycarbonate in air was studied as a function of mass loss using TGA/FTIR, GC/MS and LC/MS. In the main degradation region, 480–560 °C, the assigned structures of smaller molecules and linear molecules that evolved in air were
Jang, Bok Nam, Wilkie, Charles A.
core   +2 more sources

Oxetanes: Recent Advances in Synthesis, Reactivity and Medicinal Chemistry [PDF]

open access: yes, 2016
The 4-membered oxetane ring has been increasingly exploited for its behaviors, i.e. influence on physicochemical properties as a stable motif in medicinal chemistry, and propensity to undergo ring opening reactions as a synthetic intermediate.
Bull, JA   +4 more
core   +1 more source

Transition-metal-free formal cross-coupling of aryl methyl sulfoxides and alcohols via nucleophilic activation of C-S bond

open access: yesNature Communications, 2020
Cross-coupling processes without the use of transition metals are challenging to achieve. Here, the authors show a transition-metal-free cross-coupling utilizing aryl(heteroaryl) methyl sulfoxides and alcohols to afford alkyl aryl(heteroaryl) ethers and ...
Guolin Li   +7 more
doaj   +1 more source

Complex of Chemical-technological and Sanitary-hygienic Quality Indicators of the New Pastry Products of Special Nutrition [PDF]

open access: yes, 2017
The complex of chemical-technological and sanitary-hygienic quality indicators of new pastry products of special nutrition was studied. The original recipes of meat pastries for special nutrition, enriched with biologically active components at the ...
Kotliar, Y. (Yevhenii)   +4 more
core   +2 more sources

Bile acids. OV. 2,2-Dimethoxypropane: an esterifying agent preferred to diazomethane for chenodeoxycholic acid.

open access: yesJournal of Lipid Research, 1978
Artifacts formed by methylation of chenodeoxycholic acid with diazomethane are identical to the synthetic 3alpha- and 7 alpha-monomethyl ethers of methyl chenodeoxycholate. The extent of formation of these artifacts with time has been studied.
R Shaw, W H Elliott
doaj   +1 more source

Synthesis, Chemistry and Applications of 5-Hydroxymethyl-furfural And Its Derivatives [PDF]

open access: yes, 2001
The prospect of exciting research activity in the chemistry of furfural derived compounds such as 5-hydroxymethylfurfural (HMF), 2,5-furandicarbaldehyde and 2,5-furan-dicarboxylic acid prompted the writing of this article.
Lewkowski, Jarosław
core   +1 more source

Heterogeneous acidic catalysts for the tetrahydropyranylation of alcohols and phenols in green ethereal solvents

open access: yesBeilstein Journal of Organic Chemistry, 2018
The application of heterogeneous catalysis and green solvents to the set up of widely employed reactions is a challenge in contemporary organic chemistry. We applied such an approach to the synthesis and further conversion of tetrahydropyranyl ethers, an
Ugo Azzena   +4 more
doaj   +1 more source

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