2021
DOI: 10.32864/polymmattech-2021-7-1-50-59
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Sorption of Water Vapors by Multilayer Polyelectrolyte Films

Abstract: Цель работыоценить водопоглощение и кинетические характеристики сорбции и десорбции водяного пара мультислойными пленками на основе полидиаллилдиметиламмоний хлорида полистиролсульфоната натрия (ПДДA/ПСС)n и хитозана и декстран сульфата (ХН/ДекС)n в зависимости от влажности воздуха и температуры.Водопоглощение и кинетические характеристики сорбции и десорбции водяного пара мультислойными пленками на основе (ПДДА/ПСС)n и (ХН/ДекС)n охарактеризованы методом кварцевого микровзвешивания в зависимости от относитель… Show more

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“…At the same time, the water sorption capacity of planar (PSS/PDDA) n films under these conditions does not exceed 100 mg g −1 . 52 This also proves the non-additive effect of the polyelectrolyte shell on water uptake by the composite.…”
Section: Resultsmentioning
confidence: 56%
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“…At the same time, the water sorption capacity of planar (PSS/PDDA) n films under these conditions does not exceed 100 mg g −1 . 52 This also proves the non-additive effect of the polyelectrolyte shell on water uptake by the composite.…”
Section: Resultsmentioning
confidence: 56%
“…As one can see from Table 2, there is a 2–3 fold increase in the q e value of Al fumarate/LbL powders as compared with the pristine MOF, although the mass fraction of polyelectrolytes in the composites is obviously less than 15% and the water absorption capacity of the LbL film material itself on planar surfaces is lower than the value for Al fumarate. Those are 220 ± 10 and 380 ± 10 mg g −1 for (PSS/PDDA) n and (DexH/ChH) n films, respectively, 52 against 450 ± 10 mg g −1 for the MOF. The enhanced water uptake by LbL coated powders is not completely due to the additive sorption by the shell material but is apparently caused by the changes introduced into the shape of the corresponding adsorption isotherm, namely, into the adsorption values before and after sharp incline at the inflection point and extra fast growth of adsorption in humid and fog atmosphere, similar to those found for other MOF/LbL composites (Fig.…”
Section: Resultsmentioning
confidence: 93%
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