Search results for "Smart Materials"
showing 3 items of 13 documents
Characterization of Food Packaging Films with Blackcurrant Fruit Waste as a Source of Antioxidant and Color Sensing Intelligent Material
2021
Chitosan and pectin films were enriched with blackcurrant pomace powder (10 and 20% (w/w)), as bio-based material, to minimize food production losses and to increase the functional properties of produced films aimed at food coatings and wrappers. Water vapor permeability of active films increased up to 25%, moisture content for 27% in pectin-based ones, but water solubility was not significantly modified. Mechanical properties (tensile strength, elongation at break and Young’s modulus) were mainly decreased due to the residual insoluble particles present in blackcurrant waste. FTIR analysis showed no significant changes between the film samples. The degradation temperatures, determined by D…
Hyper-reticulated calixarene polymers: a new example of entirely synthetic nanosponge materials
2018
New calixarene-based nanosponges (CaNSs), i.e., hyper-reticulated polymers constituted by calixarene monomer units joined by means of bis(1,2,3-trialzolyl)alkyl linkers, were synthesized, characterized and subjected to preliminary tests to assess their supramolecular absorption abilities towards a set of suitable organic guests, selected as pollutant models. The synthesis was accomplished by means of a CuAAC reaction between a tetrakis(propargyloxy)calix[4]arene and an alkyl diazide. The formation of the polymeric network was assessed by means of FTIR and 13C{1H} CP-MAS solid-state NMR techniques, whereas morphological characterization was provided by SEM microghaphy. The materials were pro…
Evoluzione dei materiali intelligenti
2015
L’attività progettuale presiede alla scelta dei materiali e alla capacità tecnica entro le due dimensioni dell’agire: le conoscenze precedenti e la tensione verso il futuro. Questo ha permesso di individuare la successione i paradigmi “tecnologico-materici” che si sono avvicendati, caratterizzando il progetto con la comparsa di nuovi materiali e processi produttivi. L’avvento dei compositi ha rimesso in discussione tutti i materiali stravolgendone le caratteristiche. The design activity governs the choice of materials and technical capacity within the two dimensions of action: the previous knowledge and the tension towards the future. This has allowed us to identify the succession of "tech…