Gelcasting of BaTiO_3 ceramic powders
In order to study the gelcasting of BaTiO3powders, PMAA-NH4was selected as dispersant and stabilized BaTiO3 slurry was obtained by milling. The effects of the concentration of monomer, binder and initiator on gelling time, strength and density of the green body were discussed by using orthogonal experiments. The optimal addition content of monomer, binder and initiator were 4wt%, 15wt% and 002wt%, respectively. BaTiO3ceramic with uniform grain size, low porosity, high density and excellent positive temperature coefficient (PTC) characteristic was obtained by sintered at 1 340 ℃.
AbstractRapid regenerative medicine development requires new advanced biomaterials. Chitosan which is known of its unique properties like biocompability, biodegradability, bioactivity, antibacterial activity is a great candidate for scaffolds for cell culture. In this paper, a novel strategy for antioxidant aerogels obtainment method is presented. Biomaterials were synthesized under microwave-assisted conditions and modified with Tiliaplatyphyllos extract. Ready products were characterized over their physicochemical properties, morphology and biological properties including bioactivity and antimicrobial activity. Performed analyses confirmed obtainment of crosslinked biomaterial with advanced properties such as positive effect on cells proliferation and inhibition of Staphylococcus aureus growth.