Results 11 to 20 of about 982,997 (338)

Mechanical properties and chemical stability of pivalolactone-based poly(ether ester)s [PDF]

open access: yes, 1994
The processing, mechanical and chemical properties of poly(ether ester)s, prepared from pivalolactone (PVL), 1,4-butanediol (4G) and dimethyl terephthalate (DMT), were studied. The poly(ether ester)s could easily be processed by injection moulding, owing
Bantjes, A.   +3 more
core   +15 more sources

Exchange reactions of poly(arylene ether ketone) dithioketals with aliphatic diols: formation and deprotection of poly(arylene ether ketal)s [PDF]

open access: yes, 2017
The dithioketal derivatives of industrially important, semi-crystalline poly(arylene ether ketone)s undergo facile exchange with aliphatic diols in the presence of N-bromo-succinimide to give a range of novel poly(arylene ether ketal)s.
Colquhoun, Howard   +2 more
core   +1 more source

Gravity as Archimedes' thrust and a bifurcation in that theory [PDF]

open access: yes, 2004
Euler's interpretation of Newton's gravity (NG) as Archimedes' thrust in a fluid ether is presented in some detail. Then a semi-heuristic mechanism for gravity, close to Euler's, is recalled and compared with the latter.
A. Einstein   +25 more
core   +5 more sources

Interstellar dimethyl ether gas-phase formation: a quantum chemistry and kinetics study [PDF]

open access: yes, 2018
Dimethyl ether is one of the most abundant interstellar complex organic molecules. Yet its formation route remains elusive. In this work, we have performed electronic structure and kinetics calculations to derive the rate coefficients for two ion ...
Balucani, Nadia   +6 more
core   +4 more sources

Kant’s Dissertation for the Master’s Degree On Fire and the Transformations of his Ideas of Ethereal Matter [PDF]

open access: yesКантовский сборник, 2019
Kant’s dissertation for the Master’s degree Succinct Exposition of Some Meditations on Fire was written in Latin in 1755 as a sample (specimen) preceding a Master’s exam, but its first printing did not appear until 1838.
Lugovoy S.V
doaj   +1 more source

Modified Cassava Starches’ Identification through Mid-Infrared Spectroscopy and Exploratory Analysis

open access: yesAnalytica, 2023
Different starch properties may cause alterations in the foodstuff’s external appearance. However, modification processes in starches are usually secretive.
Isaac Yves Lopes de Macêdo   +7 more
doaj   +1 more source

ETHER - a partially forgotten anesthetic

open access: yesJournal of Education, Health and Sport, 2022
INTRODUCTION: Ether is the common name for diethylether (CH3-CH2-O-CH2-CH3). It is a colorless, volatile and highly flammable liquid with a characteristic pungent odor. It was widely used as an anesthetic in the past and is now a component of solvents. 
Kinga Pożarowska   +4 more
doaj   +1 more source

Single crystals of DPPH grown from diethyl ether and carbon disulfide solutions - Crystal structures, IR, EPR and magnetization studies [PDF]

open access: yes, 2010
Single crystals of the free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) obtained from diethyl ether (ether) and carbon disulfide (CS2) were characterized by the X-ray diffraction, IR, EPR and SQUID magnetization techniques. The X-ray structural analysis
Allen   +35 more
core   +2 more sources

Crystal structure of bis(3,5-dichloro-2-hydroxybenzyl)(2-methoxyethyl)amine

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2023
The title compound, systematic name 4,4′,6,6′-tetrachloro-2,2′-{[(2-methoxyethyl)azanediyl]bis(methylene)}diphenol (C17H17Cl4NO, 1), was prepared via a modified Mannich reaction between 2-methoxyethylamine, 2,4-dichlorophenol, and aqueous formaldehyde ...
Bradley M. Wile   +2 more
doaj   +1 more source

Direct iminization of PEEK [PDF]

open access: yes, 2011
Semi-crystalline poly(ether ketone)s are important high-temperature engineering thermoplastics, but are difficult to characterize at the molecular level because of their insolubility in conventional organic solvents.
Attwood T. E.   +17 more
core   +1 more source

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