Search results for "BIODEGRADABILI"
showing 7 items of 37 documents
Dai polimeri ai biopolimeri
2009
Una delle sfide più urgenti che ci troviamo ancora oggi ad affrontare è riferita alla gestione delle risorse e alla grande quantita di rifiuti che si accumula ovunque. inquinando e senza biodegradarsi. Iprincipali fautori del problema sono i materiali provenienti dalle risorse n o n rinnovabili. All'interno di questo scenario Il design può diventare un buon intermedlano per und progettazione e produzione che usa strategie eco-efficienti.
Caratterizzazione di nanocompositi a base di polimero biodegradabile
2012
Characterization and biodegradability of biodegradable polymer-wood flour composites
2008
Workshop Ricioc Made in Sicily/Nuove forme per il cioccolato di Modica.
2008
A route to simple nonionic surfactants
2016
AbstractA method for the synthesis of nonionic surfactants – N-alkyl-O-(2-hydroxyethyl) carbamates is proposed by acylation of fatty amines with ethylene carbonate without any solvent or catalyst. The surface tension of the prepared surfactants was measured, toxicity and biodegradability were determined for the surfactant with n-dodecyl as a hydrophobic group and N-monosubstituted amide and hydroxyl groups for their hydrophilic part.
EVALUATION OF BIODEGRADABILITY ON POLYSPARTAMIDE-POLYLACTIC ACID BASED NANOPARTICLES BY CHEMICAL HYDROLYSIS STUDIES POLYMER DEGRADATION AND STABILITY
2015
Here, the synthesis of two graft copolymers based on α,β-poly(N-2-hydroxyethyl)-D,L-aspartamide (PHEA) and poly(lactic acid) (PLA), the O-(2-aminoethyl)-O′-galactosyl polyethylene glycol (GAL-PEG-NH2) or the methoxypolyethylene glycol amine (H2N-PEG-OCH3) is described. Starting from the obtained PHEA-PLA-PEG-GAL and PHEA-PLA-PEG copolymers, polymeric nanoparticles were prepared by high pressure homogenization–solvent evaporation method. To demonstrate their biodegradability as a function of the matrix composition, a chemical stability study was carried out until 21 days by incubating systems in two media mimicking physiological compartments (pH 7.4 and pH 5.5). The degradability of both nan…