Search results for "Acetone"
showing 10 items of 350 documents
Bonding efficacy of an acetone/based etch-and-rinse adhesive after dentin deproteinization
2012
Objectives: to evaluate the effect of sodium hypochlorite (NaOCl) treatment on dentin bonding by means of shear bond strength (SBS) measurements when using Prime&Bond NT (PB NT) adhesive. Ultrastructure of the interfaces was examined by scanning electron microscopy (SEM). Study design: Extracted human third molars were sectioned and ground to expose flat surfaces of superficial or deep dentin. Specimens were randomly assigned to two equal groups, and bonded as follows: (1) according to the manufacturers’ directions, after 35% H3PO4 etching, (2) 5% NaOCl treated for 2 minutes, after 35% H3PO4 etching. Each sample was embedded in a Watanabe shear test assembly for a single plane lap shear. Af…
Cation exchange-based post-processing of 68Ga-eluate: A comparison of three solvent systems for labelling of DOTATOC, NO2APBP and DATAm
2014
Interest in (68)Ga has led to a number of innovations for its provision suitable for clinical application. Several post-processing methods are available to reduce eluate volume and remove metal trace impurities. In this work three cation exchange resin based post-processing methods (acetone, ethanol and NaCl) have been compared, using three model precursors (DOTATOC, NO2AP(BP) and DATA(m)), in terms of labelling yield and reproducibility. The acetone and ethanol based methods provided greater reproducibility and yields that makes subsequent purification unnecessary.
Solution behavior of ethylcellulose in organic solvents
2007
Ethylcellulose has been investigated by osmotic pressure, sedimentation-diffusion, and light scattering measurements in dilute solutions of acetone, ethylacetate, 2-butanol, n-butylchloride, and benzene. Combining the results of different measuring techniques allowed the recognition and elimination of the influence of microgels present in the solution. The observed second virial coefficients are high as compared with those of the vinyl polymers and do not show a pronounced dependence on the type of solvent. On the other hand, the radius of gyration is nearly proportional to the root of the molecular weight. This behavior is discussed in connection with results on other cellulose ethers repo…
Influence of Some Ionic Liquids Containing the Trifluoromethanesulfonate Anion on the Vapor–Liquid Equilibria of the Acetone + Methanol System
2011
Isobaric vapor–liquid equilibria (VLE) for the binary systems acetone + 1-butyl-3-ethylimidazolium trifluoromethanesulfonate ([beim][triflate]), methanol + [beim][triflate], acetone + 1-butyl-1-methylpyrrolidinium trifluoromethanesulfonate ([bmpyr][triflate]), and methanol + [bmpyr][triflate] as well as the VLE for the acetone + methanol + [beim][triflate] and acetone + methanol + [bmpyr][triflate] ternary systems have been obtained at 100 kPa using a recirculating still. The addition of both ionic liquids to the solvent mixtures produced an important salting-out effect, and the azeotrope tended to disappear for small amounts of ionic liquid. The experimental binary data sets were independe…
Anwendung der gelchromatographie auf cellulosenitrate
1970
Es wird uber gelchromatographische Untersuchungen von Cellulosenitrat und Polymethylmethacrylat in Aceton als Losungsmittel berichtet. Das gunstigste Trennverhalten fur die Fadenmolekule sehr grosen Durchmessers wurde mit hochvernetzten fur Aceton gepackten Styrolgelen erzielt. Als universelle Trennparameter versagten die in Tetrahydrofuran haufig anwendbaren Kombinationen von [η] und M. Am besten stimmen noch die mittels Lichtstreuung gemessenen Tragheitsradien als Funktion des Elutionsvolumens fur die beiden Polymeren uberein. Gelchromatographic measurements of cellulosenitrate and polymethylmethacrylate in the solvent acetone are reported. For coiled molecules of very large diameters hig…
Over-evaluation of total flavonoids in grape skin extracts containing sulphur dioxide
2015
Abstract Sulphur dioxide (SO 2 ) proved to increase absorbance at 280 nm of grape skin and seed extracts containing it, diluted with ethanol–HCl to assess total flavonoids and anthocyanins in the same analysis. Additional absorbance at 280 nm was also observed in acetone:H 2 O extracts, if the acetone had not completely evaporated before the extracts were diluted with a solvent. Flavonoids were correctly quantified in the extracts when SO 2 or acetone were removed by solid-phase extraction with a C 18 RP as sorbent and methanol as eluting solvent.
CCDC 619714: Experimental Crystal Structure Determination
2006
Related Article: M.Cametti, M.Nissinen, A.D.Cort, K.Rissanen, L.Mandolini|2006|Inorg.Chem.|45|6099|doi:10.1021/ic060251u
CCDC 1053057: Experimental Crystal Structure Determination
2016
Related Article: G. Aromí, C. M. Beavers, J. Sánchez Costa, G. A. Craig, G. Mínguez Espallargas, A. Orera, O. Roubeau|2016|Chemical Science|7|2907|doi:10.1039/C5SC04287A
CCDC 1053055: Experimental Crystal Structure Determination
2016
Related Article: G. Aromí, C. M. Beavers, J. Sánchez Costa, G. A. Craig, G. Mínguez Espallargas, A. Orera, O. Roubeau|2016|Chemical Science|7|2907|doi:10.1039/C5SC04287A
CCDC 1053054: Experimental Crystal Structure Determination
2016
Related Article: G. Aromí, C. M. Beavers, J. Sánchez Costa, G. A. Craig, G. Mínguez Espallargas, A. Orera, O. Roubeau|2016|Chemical Science|7|2907|doi:10.1039/C5SC04287A