Adsorption from polymer blend solutions and structure of adsorption layer

Lipatov, Yu.S.; Todosijchuk, Tamara; Chornaya, Valentine

doi:10.1163/156855494x00067

Cited by 15 publications

(13 citation statements)

References 16 publications

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“…Earlier the preferential adsorption of PBMA was observed during all the previ-the growth of concentration. PS adsorption in such twophase system occurs in a quite different manner as compared ous adsorption experiments of the ternary system under consideration in one-phase (7,8) and two-phase (3) solutions with the PBMA adsorption: one can observe a sharp increase of adsorption as the concentration increase, especially with (when studying the separated phases). But now, for adsorp- the termination of PBMA adsorption.…”

Section: Resultsmentioning

confidence: 97%

“…As is well tions). The adsorption layer thickness was calculated from known, second virial coefficient characterizes the thermodythe formula presented in our work (7). Figure 2 shows the namic affinity of solvent to polymer, or the solvent quality.…”

Section: Resultsmentioning

confidence: 99%

“…NMR spectra of individual solutions of PBMA, PS in CCl 4 , and solutions of the polymer conditions of phase separation. Measurements have shown that the upper phase contains 70-80% PBMA and lower blends are presented on our previous work (7). Values of adsorption were calculated from the following equation: phase contains 70-80% PS.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adsorption from Two-Phase Solutions of Polymer Blends

Lipatov

Chornaya

Todosijchuk

1997

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption from Two-Phase Solutions of Polymer Blends

Lipatov

Chornaya

Todosijchuk

1997

Journal of Colloid and Interface Science

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“…Both Lipatov et al 15 and Seyrek et al 16 studied the structure of the polymer adsorption layer onto the solid surface in detail, and they found that the adsorption type of polymer molecules onto the solid surface was closely related to the brine salinity, MW, rock constituents, and so on. Except for the polymer adsorption, the diffusion of chromium ions was also critical.…”

Section: Introductionmentioning

confidence: 99%

Effect of a polymer on chromium(III) diffusion during gelant injection in fractured media

Bai

Xiong

et al. 2016

J of Applied Polymer Sci

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The effect of a polymer on chromium diffusion during gelant injection into fractured media was explored with a polymer/chromium(III) (Cr 31 ) gelant. The capture and barrier effects are two main affecting mechanisms of polymer molecules on the diffusion of Cr 31 , and the formation of the polymer leak-off layer is a key influencing factor. The experimental results show that when the polymer molecular weight (MW) or concentration increased, both the diffusion rate of Cr 31 and the leak-off degree of the gelant decreased sharply. This resulted in the delayed initial production and advanced final production of Cr 31. Because of the changing diffusion rate of Cr 31 and the dilution effect of brine during gelant injection, the change trends of the Cr 31 production from the fracture outlet and matrix ports reversed after the injection volume exceeded a value; this value was named the critical injected volume. During gelant injection into the fractures, under the effects of gravity action and the disproportionate diffusion of Cr 31, the chromium diffusion profiles measured at the fracture top and bottom were different. The chromium diffusion profile along the matrix varied with increasing gelant injected volume, but it finally reached the diffusion equilibrium state in the matrix. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43447.

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“…Increasing temperature may lead to the growth of aggregate dimensions if the quality of the solvent worsens; in this case adsorption will grow as well (7). Earlier we thoroughly investigated the adsorption of some polymer pairs from semi-diluted solutions and discovered strong selectivity adsorption under adsorption conditions; the thickness of the adsorption layers formed by two polymers simultaneously were determined (9)(10)(11)(12). However, up to now there were published no data on the temperature effect on adsorption of polymer mixtures and on the selectivity of adsorption from mixtures as a function of temperature.…”

Section: Introductionmentioning

confidence: 99%