The use of diluent, along with incomplete bitumen and solvent recovery from the tailings stream, leads to the accumulation of organic compounds within tailings ponds.
Among the factors that affect their effectiveness, evaporation of the solvents plays an important role since incomplete evaporation of these solvents may compromise adhesive action [ 34].
An excessively large particle size for the starting TiO2 (anatase powders) results in insufficient Ti ions in the solvent and incomplete reaction with Ba2+ species, which leads to a Ba2+-deficient powder mixture.
The basic strategy was to B-stage the prepreg to a temperature where 98% of the volatiles were depleted while, at the same time, adequate molten resin fluidity (via incomplete imidization and residual solvent content) was retained, then apply pressure and increase temperature to complete the consolidation.
Although simplified adhesives have lower sensibility-technique, incomplete volatilization of the solvent can trigger a poor polymerization [19 21].
The presence of this bond might be due to the incomplete removal of the solvent compound during carbonization process.
In the given profile on wave number axis, the absorbance peaks from wave number 3,400 to 3,900 cm−1 are the peaks representing the hydroxyl (−OH) groups, which show incomplete removal of organic solvent.
Several factors may hamper one or more of these factors, such as the acidic substance concentration used for etching the substrate [23], the polarity of the adhesive substances applied over the demineralized tooth [24, 25], the complete or incomplete volatilization of any solvent retained in the adhesive layer [26], or the light source and intensity used for photo-activate the adhesive [12].
Use of a chemically identical internal standard accounts for any losses of product due to many factors including absorption of analytes onto surfaces, incomplete extraction into organic solvent, consumption of products by downstream enzymes, and differential suppression of ion formation in the electrospray ionization source of the mass spectrometer.
The peak positions are reported with chemical shifts in parts per million (ppm) downfield from the signal for tetramethylsilane (0 ppm) and referenced to the signal resulting from the incomplete deuteration of a solvent used in the experiment (CDCl3: 7.26 ppm, or the center line of the multiplet of DMSO- d6: 2.50 ppm).
