Revealing importance of particles’ surface functionalization on the properties of magnetic alginate hydrogels Barczak, Mariusz Borowski, Piotr Gila Vilchez, Cristina Alaminos Mingorance, Miguel González Caballero, Fernando López López, Modesto Torcuato Magnetic hydrogels Biomaterials Alginate Functionalization Magnetic particles Rheological properties Iron/silica core-shell microparticles (IMPs) were functionalized by different functional groups including amine, glycidoxy, phenyl, and thiocyanate. Many of the IMPs modifications are reported for the first time. The resulting surface chemistry turned out to affect the properties of magnetic alginate hydrogels fabricated from sodium alginate and dispersed IMPs. Differences in magnetorheological properties of the obtained magnetic hydrogels can be at least partially attributed to the interactions between alginate and surface functionalities of IMPs. Density Functional Theory (DFT) calculations were carried out to get detailed insight into those interactions in order to link them with the observed macroscopic properties of the obtained hydrogels. For example, amine groups on the IMPs surface resulted in well-formed hydrogels while the presence of thiocyanate or phenyl groups – in poorly formed ones. This observation can be used for tuning the properties of various carbohydrate-based hydrogels. 2020-10-09T07:54:45Z 2020-10-09T07:54:45Z 2020-07 info:eu-repo/semantics/article Barczak M., Borowski P., Gila-Vilchez C., Alaminos M., González-Caballero F., López-López M.T. (2020) Revealing importance of particles’ surface functionalization on the properties of magnetic alginate hydrogels, Carbohydrate Polymers, 247, 116747 http://hdl.handle.net/10481/63716 10.1016/j.carbpol.2020.116747 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ info:eu-repo/semantics/embargoedAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License