20.500.12556/DKUM-87396 Dopamine-assisted modification of polypropylene film to attain hydrophilic mineral-rich surfaces The presented study focuses on the modification of polypropylene (PP) film with tetraethyl orthosilicate (TEOS) under heterogeneous conditions via polydopamine/polyethylene imine (PDA/PEI) chemistry using a facile dip-coating procedure to attain hydrophilic mineral-rich surfaces. Thus, the resulting PP-based films were further immersed in ion-rich simulated body fluid (SBF) to deposit Ca-based minerals onto the film’s surfaces efficiently. In addition, the chemical reaction mechanism on PP film was proposed, and mineralisation potential inspected by determination of functional groups of deposits, zeta potential, hydrophilicity and surface morphology/topography using Fourier transform infrared (FTIR) spectroscopy, streaming potential, water contact angle (WCA), scanning electron microscopy (SEM) and atomic force microscopy (AFM). The obtained results show the improved wettability of samples on account of PDA inclusion (WCA was reduced from 103° for pure PP film to 28° for PDA-modified film), as well as the presence of functional groups, due to the PDA/PEI/TEOS surface functionalisation, increased the ability of minerals to nucleate on the PP film’s surface when it was exposed to an SBF medium. Moreover, the higher surface roughness due to the silica coatings influenced the enhanced anchoring and attachment of calcium phosphate (CaP), revealing the potential of such a facile approach to modify the chemically inert PP films, being of particular interest in different fields, including regenerative medicine. polypropylene film dopamine-assisted modification hydrophilicity mineralization polipropilenski filmi modifikacija s pomočjo dopamina hidrofilnost mineralizacija true false true MDPI Angleški jezik Slovenski jezik https://www.mdpi.com/journal/polymers Članek v reviji 2024-03-15 13:55:19 2024-03-15 14:23:47 2024-04-10 09:06:13 0000-00-00 00:00:00 2023 0 0 14 str. Št. 4, št. članka 902 Letn. 15 Feb. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2023-01-20 2023-02-09 2023-02-11 677.017.86 141690115 10.3390/polym15040902 2073-4360 Ojstrsek-2023-Dopamine-Assisted_Modification_o.pdf Ojstrsek-2023-Dopamine-Assisted_Modification_o.pdf 1 CD9838627C202C20D48C165F7A9A9599 c43440b50634afd67cb3c2f8608afe40c724c0f2acd54506917e56db1e7e3005 f28b17f5-e2ce-11ee-9bc5-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=176911 https://doi.org/10.3390/polym15040902 0 1337b531-e2cf-11ee-9bc5-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=176912 Fakulteta za strojništvo 0 0 0