Akademik Veri Yönetim Sistemi
European Metallurgical Conference EMC 2021, Almanya, 27 Haziran 2021, cilt.1, ss.389-406
Hydrogels are the polymeric materials that characterized by three-dimensional, cross-linked, and flexible
polymer networks. The hydrophilic groups within structure such as hydroxyl, carboxyl, and amide
that allow it swell in water and hold a large amount of water while maintaining the structure due
to chemical or physical cross-linking of individual polymer chains. Owing to their advantageous
properties, such as swellability, bio-compatibility, lack of toxicity and low production costs hydrogels
have been utilized in a wide range of hygienic, agricultural, medical, environmental protection and
pharmaceutical applications. However pure hydrogels often have some limitations such as low mechanical
stability and gel strength. In recent years, the creation of nanocomposite hydrogels (NCH)
has been gained one of the effective solutions to overcome these limitations. The inorganic component
in composite hydrogels as second phase can be metallic nanoparticles, oxides or clays minerals.
Within these groups, clay minerals have received more attention due to their unique properties such
as consists of relatively stable aqua silicates of aluminum, iron and magnesium with layered, layeredtape
and mixed-layered structures. Despite the potential advantages of the nanomaterials mentioned
above, some are inherently unstable under normal conditions; therefore their preparation requires
special techniques for formulation at the nanoscale. It is closely related to the interactions between
the polymer matrix and clay nanolayers. Therefore, exfoliating of clay minerals to nanolayers is crucial
to successful production of NCH.
In this paper, the fundamental and recent developments related to NCH are reviewed.