Excess molar volumeMolecular interactionsTheoretical predictionsViscosityExcess molar volumes, V-m(E), have been derived by using viscosity data for the binary mixtures of styrene (STY) with dimethylsulfoxide (DMSO), acetone (ACT), chlorobenzene (CB), and ethanol (EA) at different temperatures. ...
In this study, the association volume (kab) is held constant to a value of 0.03. The PC-SAFT molecular parameters are available for about 1000 components in our database. 3.1 Correlation of physical properties using QSPR To allow for a full process optimization within the proposed CoMT-CAMD ...
We have seen earlier (Volume 3, Chapter1) that the general mechanism of formation of a linear homopolymer by a chain reaction involves four distinct types of reaction. Initiation reactions generate new active centres to which themonomermolecules add sequentially in a propagation step. The propagation...
The quantities of the crystallinity of syndiotactic polystyrene (SPS) blended with another polymer in the group of poly(α-methyl styrene), poly(n-butyl methacrylate) or poly(cyclohexyl acrylate) with or without the additives were measured by X-ray diffraction and calculated by Ruland’s method....
Therefore the volume of the chromatography column is effectively larger for the small molecules. The large molecules come off the column in the solvent first, and the smallest molecules come off last. The fact that large molecules of similar structure come off the column first is unique to this...
volumeHydrophobicallymodifiedpolyelectrolytesIn this work the partial molar volumes ( V ) of different anionic polyelectrolytes and hydrophobically modified polyelectrolytes (PHM) were measured. Polymers like polymaleic acid-co-styrene, polymaleic acid-co-1-olefin, polymaleic acid-co-vinyl-2-pyrrolidone, ...
Excess molar volumeTikhonov regularizationThe Tikhonov regularization is applied to convert specific molar volume data of binary solutions of dimethyl sulfoxide with a number of acrylates and with styrene into their second- and first-partial derivatives with respect to mole fraction under constant ...
molar volume with the molar fraction well over the full molar fraction range.The limiting partial molar volumes and the molar volumes of each pseudo-pure component were evaluated with different methods.Based on the limiting partial molar volume and molar volume at a certain y value,a n...
Besides, the electrostatic repulsion between the HPAM chains becomes screened by the presence of cations in the high salinity waters, resulting in collapsing of the polymer coils, decreasing the hydrodynamic volume and finally lowering the solution viscosity [6]. Under such harsh condition, the ...
essential for cement strengths (H. J. Posser et al., J. Dent. Res., 1986, and J. Dent. (1977), 5(2), 117-20), while the low molar masses drastically reduce the viscosity of the polyacid solution (H. G. Elias, Makromoleküle [Macromolecules], Volume 1, Hüthing & Wepf Verlag...