Search results for "Iode"

The Use of Waste Hazelnut Shells as a Reinforcement in the Development of Green Biocomposites.

2022

Biodegradable Mater-Bi (MB) composites reinforced with hazelnut shell (HS) powder were prepared in a co-rotating twin-screw extruder followed by compression molding and injection molding. The effects of reinforcement on the morphology, static and dynamic mechanical properties, and thermal and rheological properties of MB/HS biocomposites were studied. Rheological tests showed that the incorporation of HS significantly increased the viscosity of composites with non-Newtonian behavior at low frequencies. On the other hand, a scanning electron microscope (SEM) examination revealed poor interfacial adhesion between the matrix and the filler. The thermal property results indicated that HS could …

Polymer-based 'green' composites

2009

Biodegradable polymer-wood flour composites: main properties and biodegradability

2009

During the last years, a considerably increasing rate of attention has arisen on biodegradable polymers. In the meanwhile, the use of wood-plastic composites (WPC) has grown in importance, especially in the United States. The combination of biodegradable polymers and wood-based fillers allows obtaining the typical advantages achievable with the use of WPCs, with the further advantage of the biodegradability and compostability of the matrix (and not only of the filler). In this work, the characterization and the biodegradability assessment of Mater-Bi®-wood flour composites have been carried out.

METODO PER IL TRATTAMENTO SUPERFICIALE DI LEGHE DI MAGNESIO PER APPLICAZIONI BIOMEDICALI

2019

L’invenzione oggetto di questo brevetto riguarda il processo di anodizzazione per la produzione di rivestimenti (coatings) su leghe di Magnesio AZ31. Queste leghe sono potenzialmente utilizzabili per la produzione di dispositivi biomedicali quali protesi e stent che sono soggetti a fenomeni di corrosione all’interno del corpo umano che ne possono compromettere il funzionamento. Il vantaggio di queste leghe sta nel fatto che possiedono ottime proprietà meccaniche (il modulo elastico delle leghe di Magnesio AZ31 risulta essere confrontabile con quello dell’osso umano) e risultano biodegradabili, ovvero svolgono la loro funzione di sostegno meccanico per lo stretto periodo necessario, e quindi…

Polylactide biodegradable scaffolds for tissue engineering applications phase separation-based techniques

2011

One of the most reliable techniques for the preparation of biodegradable scaffoldssuitable for tissue engineering applications (e.g. regeneration of wounded/damagedtissues) is based on liquid/liquid phase separation of ternary solvent/antisolvent/polymersolutions. In particular, two phase separation protocols are examined here: ThermallyInduced Phase Separation (TIPS) and Diffusion Induces Phase Separation (DIPS). According to the former protocol, a thermodynamically stable polymeric ternarysolution is brought below its metastability/instability point (spinodal/binodal curve) byquench in a cooling medium: under opportune conditions, a foam-like structure is formedby nucleation and 3-D growt…

Patent number RM2009A000073: Procedimento di preparazione di scaffold polimerici preangiogenizzati

2009

Classe proposta A61F - Filtri da inserire nei vasi sanguigni; protesi; apparecchi ortopedici e curativi per contraccezione; fomentazione; trattamento o protezione degli occhi e delle orecchie; bendaggi, garze per medicazioni e assorbenti; necessario per il pronto soccorso

Poly lactic acid based scaffolds for vascular tissue engineering

2012

A critical obstacle encountered by tissue engineering is the inability to maintain large masses of living cells upon transfer from the in vitro culture conditions to host in vivo. Capillaries, and the vascular system, are required to supply essential nutrients, including oxygen, remove waste products and provide a biochemical communication "highway". The successful use of tissue-engineered constructs is currently limited to thin or avascular tissues, such as skin or cartilage, for which post-implantation neovascularisation from the host is sufficient to meet the demand for oxygen and nutrients. To succeed in the application of tissue engineering for bigger tissues, such as bone or muscle, t…

Electro-Optical characterization of Silicon Carbide Schottky photodiodes

2014

Responsivity measurements of SiC Schottky photodiodes

2014

We investigated the technical features of three novel classes of 4H-SiC vertical Schottky UV detectors employing Ni2Si interdigitated strips whose pitch size is 8, 10 and 20 µm, respectively, based on the pinch-off surface effect.

LEMONGRASS PLANT LEAF AND CULM AS POTENTIAL SOURCES OF REINFORCEMENT FOR BIO-COMPOSITES

2022

A possible source of natural reinforcement for bio-composites can be represented by lemongrass plant (Cymbopogon flexuosus), a clumped and perennial grass which belongs to the Poaceae family. This plant is extensively used for several applications such as pharmacology, food preservation and cosmetics but, to the best of our knowledge, few papers were published on its use as source for reinforcement of composites and no one article was focused on the comparison between lemongrass leaves and culms as potential source of natural reinforcement. To this aim, a preliminary investigation on leaf and culm fibers was carried out to compare their physical and chemical features as well as their tensil…