The thermal coefficient of sorption of vapors by polymeric materials

Grebennikov, S. F.; Chulkova, Yu. S.

doi:10.1134/s0036024409040244

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…(4), (5)) can be expressed in terms of the absorption isotherm equation. In [19][20][21], the high descriptive ability of the equation of the theoretical probabilistic model of sorption was given:…”

Section: Resultsmentioning

confidence: 99%

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Activity coefficients of the low-molecular-mass components in swelling polymers

2015

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Solutions in which low molecular mass substances and a swelling polymer form a homogeneous system have been studied. A method for predicting the activity and osmotic coefficients during variation in the solute concentration has been proposed. The dependence of the osmotic coefficients on the solution con centration, in conjunction with volumetric changes in the system and the swelling pressure, has been ana lyzed.

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Section: Resultsmentioning

confidence: 99%

“…, (19) , (20) where V 1 0 (T 1 ,O) is the molar volume of the LMMS extrapolated to zero pressure. Denoting the molar vol ume of the pure LMMS at a pressure of 0.5 (P'' + P') in terms of , equating μ and μ , and using the equality x 1 = θ, we obtain .…”

Section: Resultsmentioning

confidence: 99%

Activity coefficients of the low-molecular-mass components in swelling polymers

2015

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“…How ever, since the sum in brackets of Eq. (17) represents the internal pressure of an ideal polymer system, then, to some extent (18), the value of g* will also reflect the effect of system nonideality on the state of the poly mer.…”

Section: Introductionmentioning

confidence: 99%

Osmotic phenomena in polymer sorption systems

Grebennikov

Vnuchkin

2012

Prot Met Phys Chem Surf

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Sorption of vapors of low molecular weight compounds by polymers is accompanied by the for mation of a solution in which opposing forces associated with the swelling pressure and the elastic force of the polymer matrix take place. Thermodynamic analysis allowed us to propose dependences for the calculation of the effective osmotic coefficient via the parameter of the sorption isotherm equation. Volumetric deforma tion in a number of polymer systems was measured, and its relation to the values of osmotic coefficient was shown.

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