Zobrazeno 1 - 10
of 174
pro vyhledávání: '"W. Alexander Van Hook"'
Publikováno v:
Fluid Phase Equilibria. 257:35-52
We employ an extended corresponding states theory for the description of liquid phase molar densities, ρ, and molar density isotope effects (IE's), and vapor pressures and vapor pressure IE's. In extended corresponding states, the conditions for liq
Publikováno v:
Monatshefte f�r Chemie / Chemical Monthly. 135:493-499
Experimental data on oligostyrene/oligoethylene blends (from 5/11-mer to 50/11-mer) reported in the previous paper are interpreted using a modified double lattice model. The approach successfully describes the unusual chain length dependence of the u
Publikováno v:
European Polymer Journal. 40:251-257
Liquid–liquid cloud point diagrams of solutions of nearly monodisperse samples of polystyrene (PS), and binary mixtures of nearly monodisperse PS’s, both in methylcyclohexane (MCH), were determined for several polymer molecular weights ðMwÞ at
Publikováno v:
Monatshefte f�r Chemie / Chemical Monthly. 134:1529-1539
Upper critical solution temperatures (UCSTs) for liquid–liquid demixing in a set of mixtures of linear alkanes (pentane (N1=5) to pentacontane (N1=50)) with an oligostyrene (1241 amu, N2=12) are reported. We find strong correlation between the Hild
Autor:
W. Alexander Van Hook, Corey L. Moses
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 41:3070-3076
The pressure derivatives of the second virial coefficients [dA2/dP; 0.1 ≤ P (MPa) ≤ 35.0] for dilute polystyrene (PS) solutions in good, θ, and poor solvents were measured with static light scattering. The solvent quality improved (dA2/dP > 0) i
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 41:3064-3069
A membrane osmometer designed for use at pressures greater than 0.1 MPa and less than 6 MPa was employed to determine the pressure coefficient of the equilibrium osmotic pressure (∂π/∂P) of a dilute polystyrene/toluene solution. The pressure coe
Publikováno v:
Macromolecular Symposia. 181:363-372
The pressure dependence of liquid-liquid equilibria in weakly interacting binary macromolecular systems (homopolymer solutions and blends) will be discussed. The common origin of the separate high-temperature/low-temperature and high-pressure/low-pre
Publikováno v:
The Journal of Physical Chemistry A. 105:9284-9297
Experimental data on vapor phase second virial coefficient isotope effects (VCIEs) are reviewed and then interpreted using the general theory of isotope effects. Useful correlations are developed between −Δ(ℬ − bo)/(ℬ − bo) = (−VCIE) and
Autor:
Attila R. Imre, W. Alexander Van Hook
Publikováno v:
Fluid Phase Equilibria. :363-372
Liquid–liquid equilibria were measured in a series of solutions of an oligostyrene (1241 amu) in selected linear, branched and cyclic lower alkanes. Correlations between the solubility parameters of the alkane solvents and the experimental upper cr
Publikováno v:
Journal of Chemical & Engineering Data. 46:777-781
Vapor pressures of the tetramethylurea (TMU) + H2O or + D2O solutions (1, 2, 4, 8, 15, 25, 50, and 70 molal, 283 ≤ T/K ≤ 353) were obtained from precise differential measurements. The vapor pressures in the lower temperature range show sharp maxi