20.500.12556/RUL-138063 Role of substrate type in the process of polyelectrolyte multilayer formation Polyelectrolyte multilayers are coatings formed by the alternate deposition of polycations and polyanions on a charged surface. In this study we examined how the type of substrate affects a multilayer prepared from poly(allylamine hydrochloride) and poly(acrylic acid). Silicon and titanium wafers were used as substrates. Their properties were systematically studied using ellipsometry, tensiometry, atomic force microscopy and streaming potential measurements. Multilayers were built up at pH = 7 with tetramethylammonium chloride as the background salt. The growth of films was monitored by ellipsometry, while the morphology and surface roughness were determined by atomic force microscopy. It was found that the thickness of multilayers containing 10 layers on silicon is 10 nm, whereas the thickness of the same film on titanium is three times higher. It was shown that multilayers formed on silicon display a grain-like structure, which was not the case for a film formed on titanium. Such morphological properties are also reflected in the surface roughness. Finally, it was shown that, in addition to the electrostatic interactions, the hydrophobicity of the substrate also plays an important role in the polyelectrolyte multilayer formation process and influences its thickness and properties. polyelectrolyte multilayers silicon titanium AFM tensiometry ellipsometry streaming potential polielektrolitne večplastne plasti silicij titan AFM tenziometrija elipsometrija pretočni potencial true false true Angleški jezik Ni določen Članek v reviji 2022-07-08 11:55:18 2022-07-08 11:55:20 2022-09-15 04:16:13 0000-00-00 00:00:00 2022 0 0 15 str iss. 13, art. 2566 Vol. 14 Jun. 2022 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 2022-06-01 544.6.018.47-036.5 2073-4360 10.3390/polym14132566 114638851 mesic22-polymers.pdf mesic22-polymers.pdf 1 1CF97EF97969CF27032047FADED82233 904d78533e4608f2ce8bae4458d46735ec65132702330d2858f0f9213b973c3c 4c6327a1-fea5-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=158255 https://www.mdpi.com/2073-4360/14/13/2566 1 db4215ca-fea3-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=158254 Zdravstvena fakulteta 0 0 0