Marine gel phase: network formation and interaction with nanoparticles (CROSBI ID 619590)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Pletikapić, Galja ; Svetličić, Vesna ; Mišić Radić, Tea ; Kellermayer, Miklos ; Brujić, Jasna.
engleski
Marine gel phase: network formation and interaction with nanoparticles
The gel formation in aqueous solutions such as seawater is a complex process that depends on biopolymer chemical structure, nature of co- and counter ions, polymer concentration and temperature. Microscopic (TEM, AFM) and NMR studies revealed that fibrillar acyl heteropolysaccharides are major constituents of naturally occurring marine high molecular weight dissolved organic matter. These polysaccharides stand out by their supramolecular organization and gelling capacity due to hydrogen bonding and electrostatic interactions and are directly related to their function in marine ecosystem. Here, we used force spectroscopy to quantify the intra- and intermolecular forces within the marine gel network. Even though marine biopolymers are complex naturally occurring materials, careful experimentation using high-resolution AFM imaging and force spectroscopy revealed reproducible and distinct mechanical responses. These mechanical signatures depend on the level of association between the fibrils and the topology of the gel network itself. To reveal the interaction of nanoparticles (NPs) in complex matrices like marine gel phase is a challenging task. By high- resolution AFM imaging, the incorporation of NPs into the marine gel matrix was identified. This nanospecific interaction could have significant environmental implications.
marine gel; polysaccharides; self-assembly; force spectroscopy; AFM
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Podaci o prilogu
2014.
objavljeno
Podaci o matičnoj publikaciji
Podaci o skupu
21. International Scientific Meeting on Vacuum Science and Techniques
pozvano predavanje
08.05.2014-09.05.2014
Samobor, Hrvatska