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Silver-graphene composite materials with enhanced electrical and mechanical properties are reported in this work. Ag nanoparticles are in-situ synthesized on the graphene oxide (GO) by chemical reduction of Ag salt mixed with GO in aqueous solution. After hydrogen reduction of GO, powder metallurgy technique and hot-extruding are employed to prepare Ag-rGO composite bulk material. The composite shows...
Bioencapsulation is a low-cost, low energy demand technology for harnessing the power of microorganisms for applications such as bioremediation, biosensing, and biocatalysis. Silica gels have been investigated for bioencapsulation, yet few studies have focused on gel mechanical properties and biocatalytic activity simultaneously, instead studying the viability of the encapsulated microorganisms. In...
Regeneration of orthopedic soft and hard tissues, such as ligaments, bone, and the tendon-to-bone insertion site (TBI), is problematic due to a lack of suitable biomaterials which possess appropriate mechanical properties capable of promoting cellular functions in these tissues with limited regenerative capacity. Additionally, surgically implanted biomaterials are susceptible to bacterial infection,...
Self-assembled DNA supramolecules have similar dimensions and biochemical properties as natural molecules in tissues, such as collagen. Therefore, these molecules have great potential to serve as a new generation of implants. In this study, twin-based linker (TBL) nanotubes, and poly (2-hydroxyethyl methacrylate) (pHEMA) reinforced with hydroxyapatite (HA) nanoparticles (TBL/HA/pHEMA composite) were...
Mechanical properties of isotropically conductive adhesives depend not just on the internal structure and composition (amount and type of binder and filler) of the adhesive, but also on chemical processes that are influenced by curing. Thermomechanical analysis allows to distinguish the point when the adhesive is fully cured, it may reveal a difference in mechanical properties after different modifications...
We present the Ni-P and Co-P nanoparticles prepared by electroless plating for catalytic synthesis of carbon micro- and nanocoils (CMCs, CNCs) by means of the conventional CVD method. SEM analysis reveals that the carbon coils have unique DNA-like helical morphologies. Moreover, microcoils with flat cross-section can be stretched to 3 times of their original coil length. The measurements of I-V curve...
In this paper, we have investigated the influence of different types and contents nanoparticles on the mechanical properties, structure and dispersion morphology of the LLDPE/inorganic nanocomposites. The results indicate that two-step method has not only good compatibility between two phases but also mechanical properties and processing flowability.
The purpose of this study was to prepare a 3D nanocomposite bone substitute prepared from gelatin (GEL) and synthesized hydroxyapatite (HAP) in order to mimic natural bone feathers through a novel layer solvent casting combined freeze-drying technique. The adhesion between superimposed layers was ensured by applying a GEL solution. Furthermore, samples were cross-linked with 1% glutaraldehyde (GA)...
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