Compatibilization of polymer blends by using a cyclophosphazene additive

Effect of raster resolution and polygon-conversion algorithm on landslide susceptibility mapping

The choice of the proper resolution in landslide susceptibility mapping is a worth considering issue. If, on the one hand, a coarse spatial resolution may describe the terrain morphologic properties with low accuracy, on the other hand, at very fine resolutions, some of the DEM-derived morphometric factors may hold an excess of details. Moreover, the landslide inventory maps are represented throughout geospatial vector data structure, therefore a conversion procedure vector-to-raster is required.This work investigates the effects of raster resolution on the susceptibility mapping in conjunction with the use of different algorithms of vector-raster conversion. The Artificial Neural Network t…

On the Preparation and the Characterization of Polyethylene/Polyamide Blends by Melt Processing in the Presence of an Ethylene(co)acrylic Acid Copolymer and of New Phosphazene Compounds

Samples of HDPE and PA6 have been meltprocessed in the presence of two new phosphazene compounds, CP-2EPOX and CP-2OXA together with an ethylene/ acrylic acid copolymer. The blends have been prepared in an industrial twin-screw extruder by using PA6 and PE in weight ratios of 25/75 and 75/25. When used, 5 phr of EAA and 0.2 phr of CP have been added. The materials have been completely characterized from a rheological, morphological, and mechanical point of view. The results indicate that the additives used caused an increase in the rupture tensile properties, of the impact strength and viscosity especially in the PE-rich blend in the presence of CP-2EPOX. This result can be attributed both …

Restoration of a polymateric sculpture of the immaculate conception

This study focuses on the intervention methodologies applied on a polymateric polychrome sculpture of the Immaculate Conception (18th century), located inside the chapel of the Oratorio dei Falegnami in Palermo. The peculiarity of this artefact is the employment of two different supports, upon which both the ground and paint layers are laid: a wooden one, carved and prepared, for the execution of the anatomical parts, and a textile one, sewn, pinned on and stiffened with glue, for the garments. The damage found was mainly attributed to: reaction of the artwork’s materials to the environment, lack of ordinary maintenance, and previous interventions. On the textile support, cleaning was hinde…