Adsorption of Polymer Mixtures from Dilute and Semidilute Solutions

Temperature Dependence of Adsorption of Polymer Mixtures from Solutions

“…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.…”

Experimental Simulation of Polymer Mixture Adsorption from Two-Phase Solutions

“…of adsorption from the polymer mixtures, the first investiga-Thus, the process of segregation from the liquid state of tions having been published as long as 60 years ago (6,7). polymer mixtures depends on the phase state of the system It was established recently (8), by using one and the same and on the surface properties. In connection with this, it adsorbent, that adsorption from solutions of polymer mixseems very interesting to compare the adsorption of polytures depends both on the miscibility of polymers in solution mers from their mixture under conditions in which the solu-(on parameters of thermodynamic interaction, x 23 ) and on tion is one phase or, under the given conditions, separates solution concentration.…”

“…polymer, which corresponds to the coil overlapping [the method of determination of C* has been described in detail Thus, the surface tension of each phase is the same. Detailed analysis of molecular mass distribution in each phase has in (8)]. High values of adsorption and small fractions of bonded segments are typical for such a case of adsorption not been undertaken.…”

“…Before measurements, fumed silica was heated at 800ЊC in the oven for 6 h to mixtures (8). The experimental data show the interconnection between adsorption of polymers from the mixture, ther-remove residual water (11).…”

“…The concentration change in the course of adsorption was measured according to the expression measurements of adsorption from polymer mixtures (8).…”