Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Gary L. Bertrand"'
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 103:117-123
The adsorbed amounts of water vapor onto polyacrylic polymer (polymer ×10) were measured using a thermogravimetry method as a function of pressure at 298 and 313 K. The adsorption isotherms are categorized to type II isotherms by IUPAC classificatio
Publikováno v:
Journal de Physique IV (Proceedings). 122:163-170
The organic polymers super absorbents present values of specific surface lower than 2m 2 /g. The isobars of adsorption of water vapor on studied polymer are of type III at ambient temperature with the hysterisis phenomena.For temperatures lower than
Publikováno v:
The Journal of Chemical Physics. 113:7197-7203
The authors used a Wilson expansion cloud chamber to measure binary homogeneous nucleation rates for pure n-octane, pure i-octane, and 3:1, 1:1, 1:3 (mole ratio) mixtures in a temperature range from 215 to 260 K. The nucleation rates range from appro
Publikováno v:
Separation Science and Technology. 30:2259-2276
Crystallization or precipitation of cyclodextrins in the presence of racemates has proven to be a useful method to enrich enantiomers. The technique is commonly performed in neat aqueous solutions which limits its utility in resolving many hydrophobi
Autor:
Gary L. Bertrand, Paul M. Lindemuth
Publikováno v:
The Journal of Physical Chemistry. 97:7769-7773
Incremental calorimetric titration of pentanol into aqueous solutions containing 3.5% cationic (tetradecyltrimethylammonium bromide, TTMAB, in 0.05 M NaBr) or anionic,(sodium dodecyl sulfate, SDS, in 0.28M NaCl) surfactant and solubilized additives i
Publikováno v:
Journal of Liquid Chromatography. 15:2909-2925
A novel method for the extraction of nonionic surfactants from waste water is described which uses centrifugal partition chromatography (CPC). The extractant is the liquid stationary phase of the CPC apparatus, and the raffinate serves as the mobile
Publikováno v:
Colloids and Surfaces. 65:231-241
A rigorous calorimetric model based on the pseudophase model at infinite diluties was employed to determine the partition coefficient and enthalpy of transfer of 1-pentanol, 3-methyl-1-butanol and benzyl alcohol between the aqueous and micellar phase
Autor:
Gary L. Bertrand, Duy Nguyen
Publikováno v:
Journal of Colloid and Interface Science. 150:143-157
Calorimetric measurements have been used to study the shape transitions of micelles. Partial molar enthalpies of solutions of cosurfactants (n-pentanol, benzyl alcohol, 3-methyl-l-butanol, n-hexylamine) have been measured in 2% TTMAB solutions at 25
Publikováno v:
Journal of Adhesion Science and Technology. 6:171-191
As part of our work with the use of silane coupling agents, we have been investigating the transformations of alkoxysilancs into siloxanes. The influence of a para-substituted phenyl group attached to the silicon was investigated and the rates of aci
Publikováno v:
Journal of Liquid Chromatography. 13:3061-3077
Octaol-water partitioning coefficients (Koct) are an accepted parameter in the prediction of biological activity of organic chemicals. Centrifugal Partition Chromatography (CPC), a form of counter current chromatography, is shown to have several dist