7 documents found, page 1 of 1

Hydrogel bioinks of alginate and curcumin-loaded cellulose ester-based particle...

3D bioprinting is a versatile technique that allows the fabrication of living tissue analogs through the layer-by-layer deposition of cell-laden biomaterials, viz. bioinks. In this work, composite alginate hydrogel-based bioinks reinforced with curcumin-loaded particles of cellulose esters (CEpCUR) and laden with human keratinocytes (HaCaT) are developed. The addition of the CEpCUR particles, with sizes of 740 ...

Development of bio-based expanded cork polymer composites (eCPC) with poly(lact...

Expanded cork polymer composites (eCPC) using a PLA matrix and expandable microspheres (EMS) were developed and characterized. A blowing agent was introduced to evaluate its effect on cork structure in eCPC injected pieces. A chemical and thermal characterization was conducted using Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC) and Fourier Transform Infrared-Attenuated Total Reflecti...

Influence of Process Parameters in LMD for Geometrical Accuracy and Thin Geomet...

Laser metal deposition (LMD) industrial use demands research about the influence of the parameters in the built parts density, accuracy and mechanical properties. Especially for the thin-wall parts, knowledge about the correlations between processing parameters and the final result is indispensable. This study explores the relationship between process parameters and the quality of AISI316L stainless steel thin-...

Nucleation activity of graphene in polyamide 6-based nanocomposites prepared by...

The influence of surface finishing on laser heat treatments of a tool steel

Laser heat treatments (LHT) has received growing attention in the last years because of highly localized precision and manufacturing efficiency related to laser processing of moulds steel. Due of its strong resistance and ability to maintain hardness and strength at high temperatures, AISI P20 steel is one of the most widely used tool steel in the plastics injection mould industry. This work presents an experim...

The effect of graphene-based materials in polyamide 6 obtained by in situ therm...

Polyamide 6 (PA6) and PA6 reinforced with graphene (APGBM) were developed by an in situ anionic ring opening polymerization of ε-caprolactam through thermoplastic resin transfer moulding (T-RTM) technology. In low viscosity raw materials, the dispersion of nanoparticles namely graphene, is a demanding challenge. The effect of different loadings of GBM was studied along with the thermal and mechanical properties...

Alginate-lysozyme nanofibers hydrogels with improved rheological behavior, prin...

In this study, alginate nanocomposite hydrogel bioinks reinforced with lysozyme nanofibers (LNFs) were developed. Alginate-LNF (A-LNF) suspensions with different LNF contents (1, 5 and 10 wt.%) were prepared and pre-crosslinked with 0.5% (w/v) CaCl2 to formulate A-LNF inks. These inks exhibit proper shear-thinning behavior and good recovery properties (~90%), with the pre-crosslinking step playing a crucial rol...