Barrier effects of polyaniline layer in surface modified MF-4SK/Polyaniline membranes

Influence of conditions of polyaniline synthesis in perfluorinated membrane on electrotransport properties and surface morphology of composites

“…In the HCl solution, the polyaniline layer distorts the hydrate shell of the proton to the minimum size corresponding to the hydroxonium structure (Н 3 О + ). As a result, the barrier effect for water molecules within hydrate ion shells appeared [35]. Similar changes of electroosmotic properties were observed both for the composites obtained by the express method of modification (sample 4) and during 3 h of PANI synthesis (sample no 6).…”

Structure of perfluorinated membranes investigated by method of standard contact porosimetry

“…Perspective method of perfluorinated membrane modifying is the polymer (polyaniline, polypyrrol, polythiophene) synthesis in the membrane matrix [120][121][122][123][124][125]. The introduction of electron conducting polymers not only expands the application areas for these membranes but also increases their selectivity and thermal stability [47,[126][127][128] that especially is important for fuel cell operating at high temperature. The perfluorinated membranes can be modified both with polyaniline and metal nanoparticles [129][130][131][132][133].…”

“…All these methods can give information regarding power changes in a substance or material that being researched. Therefore the abovementioned methods are used usually for the estimation of the water state in membranes, thermal transitions and chemical reactions in polymers [25,[45][46][47]. The study of structural characteristics of membranes upon their transition from dry to swollen condition is fulfilled in works [48][49][50].…”

Influence of anion hydration status on selective properties of a commercial anion exchange membrane electrochemically impregnated with polyaniline deposits

“…[7][8][9][10][11][12][13] For example, polyaniline (PAni) has been used to impart specic properties to the membranes becausebesides its exibility and unique electrical conductivity -this material has the special capacity to generate charges in its bulk under certain conditions (such as chemical or electrochemical doping). [11][12][13][14][15][16][17] Furthermore, its different chemical forms exhibit not only specic structural characteristics, but also particular hydrophobic/hydrophilic properties. For example, the nonprotonated form of PAni, named leucoemeraldine base, is more hydrophobic due to the polar C-N, C]N, and N-H bonds in its structure; moreover, due to its ability to form hydrogen bonds, leucoemeraldine base presents the most compact and rough structure among the different PAni forms.…”