20.500.12556/DKUM-35857 Donnan equilibrium and osmotic pressure in hollow polyelectrolyte microcapsules A simple theoretical model of the Donnan equilibrium is applied to studies of distributions of ions between the external and internal volumes of hollow polyelectrolyte capsules as well as of concomitant osmotic pressure load on a capsule wall resulting from these distributions and the presence of polyanion. The model system consist of dispersed polyelectrolyte capsules in an electrolyte solution whereby two cases are considered with respect to the presence of the polyanion, either in the inner or external solution. It is assumed that the capsule wall is impermeable to polyanion, but water and all ions can freely penetrate. The model predictions are summarized by presenting the difference between the external pH, the pH of the inner solution and the osmotic pressure difference across the capsule wall, both in the dependence of sodium chloride concentration. Teoretičen model Donnanovega ravnovesja smo uporabili v študiji porazdelitve malih ionov med zunanjim in notranjim volumnom votlih polielektrolitskih kapsul, zaradi česar se spreminja tudi osmozna obremenitev stene kapsul ob prisotnosti poliiona. Model opisuje disperzijo polielektrolitskih kapsul v elektrolitski raztopini, kjer je poliion prisoten v zunanji ali notranji raztopini kapsule. Predpostavili smo, da je stena kapsule neprepustna za poliion in prepustna za vodo in majhne ione. Modelne napovedi so podane kot vrednosti pH notranje raztopine v odvisnosti od natrijevega klorida in razlike osmoznih tlakov na steno kapsule v odvisnosti od natrijevega klorida. biophysics polyelectrolytes polyelectrolyte capsules Donnan equilibrium osmotic pressure biofizika polielektroliti polielektrolitske kapsule Donnanovo ravnovesje osmozna obremenitev true true true Slovenian Chemical Society Angleški jezik Slovenski jezik Znanstveno delo 2012-06-07 12:29:50 2012-06-07 12:29:50 2025-09-15 14:41:27 2021-04-15 03:35:30 2007 0 0 str. 598-604 št. 3 Letn. 54 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 2007-02-01 0000-00-00 577 15589128 1318-0207 URN:SI:UM:DK:XFRVXKJU Acta_Chimica_Slovenica_2007_Halozan_et_al._Donnan_equilibrium_and_osmotic_pressure_in_hollow_polyelectrolyte_microcapsules.pdf Acta_Chimica_Slovenica_2007_Halozan_et_al._Donnan_equilibrium_and_osmotic_pressure_in_hollow_polyelectrolyte_microcapsules.pdf 1 43520345193951020000991C8A572F91 ac998b58869ed661077ba005f78ccd40b3ce2e449df6b28c8cee17ef37674fea 8705d83e-7c0e-11eb-bb7a-00155d0001ca 20.500.12556/dkum/a1afab03-3987-4f5f-a5c3-b7fc0bca8c7a https://dk.um.si/Dokument.php?lang=slv&id=115503 http://acta-arhiv.chem-soc.si/54/54-3-598.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=46883 Fakulteta za naravoslovje in matematiko 0 0 0