Hybrid Hemp Particles as Functional Fillers for the Manufacturing of Hydrophobic and Anti-icing Epoxy Composite Coatings

The development of hydrophobic composite coatings is of great interest for several applications in the aerospace industry. Functionalized microparticles can be obtained from waste fabrics and employed as fillers to prepare sustainable hydrophobic epoxy-based coatings. Following a waste-to-wealth approach, a novel hydrophobic epoxy-based composite including hemp microparticles (HMPs) functionalized with waterglass solution, 3-aminopropyl triethoxysilane, polypropylene-graft-maleic anhydride, and either hexadecyltrimethoxysilane or 1H,1H,2H,2H-perfluorooctyltriethoxysilane is presented. The resulting epoxy coatings based on hydrophobic HMPs were cast on aeronautical carbon fiber-reinforced panels to improve their anti-icing performance. Wettability and anti-icing behavior of the prepared composites were investigated at 25 °C and −30 °C (complete icing time), respectively. Samples cast with the composite coating can achieve up to 30 °C higher water contact angle and doubled icing time than aeronautical panels treated with unfilled epoxy resin. A low content (2 wt %) of tailored HMPs causes an increase of ∼26% in the glass transition temperature of the coatings compared to pristine resin, confirming the good interaction between the hemp filler and epoxy matrix at the interphase. Finally, atomic force microscopy reveals that the HMPs can induce the formation of a hierarchical structure on the surface of casted panels. This rough morphology, combined with the silane activity, allows the preparation of aeronautical substrates with enhanced hydrophobicity, anti-icing capability, and thermal stability

Aida

De cada obra s'ha digitalitzat un programa sencer. De la resta s'han digitalitzat les parts que són diferents.Direcció: Anton GuadagnoEmpresa: Juan A. Pamia

Simulation of Self-heating Process on the Nanoscale: a Multiscale Approach for Molecular Models of Nanocomposite Materials

We develop a theoretical–computational protocol to simulate Joule heating on nanocomposite materials, allowing to investigate morphology, voltage and concentration effects

Aida

Coreògraf i mestre de ball Joan MagrinyàDe cada obra s'ha digitalitzat un programa sencer. De la resta s'han digitalitzat les parts que són diferents.Empresa: Juan A. PamiasOrquestra del Gran Teatre del Liceu dirigida per Anton GuadagnoÒpera de Giuseppe Verdi i llibret d'Antonio GhislanzoniEl programa es va acompanyar d'una enquesta a diferents personalitats sobre la repercussió de l'obra des de la seva estrena mundia

Aida

Empresa Juan A. PamiasFunció 'a beneficio con bandeja de los empleados permanentes, porteros y acomodadoresMestre de cor : Riccardo Bottino ; Mestre de ball : Joan Magrinyà ; Mestre apuntador : Àngel Anglada ; Amb la col·laboració de l'Orfeó AtlàntidaOrquestra del Gran Teatre del Liceu dirigida per Anton Guadagn

In vivo Study of the Layered Structure on the Abdomen by Broadband Time-Domain Diffuse Optical Spectroscopy

We investigate the effect of depth heterogeneity in the abdomen by multidistance time-domain diffuse optical spectroscopy on 4 volunteers finding a higher water content in shallower regions, possibly due to fat heterogeneity and/or dermis contributions