In this paper, nanocomposites based on polypropylene (PP) filled with up to 5 wt.% of multi-walled carbon nanotubes (MWCNTs) were investigated for determining the material property data used in numerical simulation manufacturing processes such as injection molding and extrusion. PP/MWCNT nanocomposite pellets characterized rheological behavior, crystallinity, specific volume thermal conductivity, while injection-molded samples mechanical electrical properties. The addition MWCNTs does not...

Electrospinning is a versatile technique for obtaining nano/micro fibers which are able to significantly change the active properties of composite materials and bring in new dimensions agri-food applications. Composite bio-based packaging obtained from whey proteins, functionalized with thyme essential oil (TEO) reinforced by electrospun polylactic acid (PLA) fibers, represent promising solution developing food using environmentally friendly materials. The aim this study obtain characterize...

Sustainable food packaging solutions replacing the current petroleum-based ones are sparking researchers’ interest in development of innovative applications. This study developed and characterized an edible film as a material, based on baker yeast whole cell disrupted by sonication thermal treatment. Concentrations glycerol Tween 80 range 1.00%–1.50% were used for film-forming emulsion, further functionalized with 2% cinnamon−lavender essential oils mixture (CLEO). The yeast-based emulsions...

Fused filament fabrication (FFF) has recently emerged as a sustainable digital manufacturing technology to fabricate polymer composite parts with complex structures and minimal waste. However, FFF-printed frequently exhibit heterogeneous low mechanical properties. To manufacture high-end good properties, advanced predictive tools are required. In this paper, Artificial Neural Network (ANN) models were developed evaluate the properties of 3D-printed polyamide 12 (PA) carbon fiber (CF) glass...

In this paper, the impact of recycling and remanufacturing on behavior low-density polyethylene/multi-walled carbon nanotube (LDPE/MWCNT) composites is investigated. LDPE/MWCNT with 0.1–5 wt%, previously manufactured by injection molding, were mechanically recycled remanufactured molding 3D filament extrusion, rheological, electrical, mechanical properties analyzed compared those virgin under same conditions. Experimental results demonstrate that have similar as composites, if not better....

In this paper, polypropylene (PP) filled with different levels of multiwalled carbon nanotubes (MWCNTs) manufactured by injection molding was closed-loop recycled in order to investigate the effect recycling and reprocessing on its rheological, electrical, mechanical properties. It found that PP/MWCNT composites keep flow performance after recycling. Moreover, stress strain at break increase one cycle (mechanical molding), whereas no statistically significant changes electrical conductivity,...

This paper investigates the rheological, mechanical and electrical properties of a Ethylene-Vinyl Acetate (EVA) polymer filled with 1, 3 5 wt.% multi-walled carbon nanotubes (MWCNTs). The melt flow pressure-volume-Temperature (pvT) behaviors EVA/MWCNT composites were investigated using high-pressure capillary rheometer, while electro-mechanical response was on injection-molded samples. Rheological experiments showed that shear viscosity composite is dependent nanotube loading and, at high...

Recycling polymer/carbon nanotube (CNT) nanocomposites is not well common, despite a growing interest in using industrial applications. In this study, the influence of mechanical recycling on thermal, rheological, and electrical behavior ethylene-vinyl acetate (EVA)/CNT investigated. EVA/CNT nanocomposite with different amounts CNTs (1, 3 5 wt.%) was subjected to grinding reprocessing by injection molding close-loop up three cycles, changes induced were monitored Differential Scanning...

This paper presents the design and prototype of a constant volume (isochoric) vessel that can be used for preservation large organs in supercooled state. is preliminary version more advanced design. The device consists cooling bath operated by mechanical vapor compression refrigeration unit an isochoric chamber made stainless steel. using supercooling technology requires continuous temperature pressure monitoring. While was initially designed pig liver experiments, its innovative...

A new generation of food packaging materials, centered on green solutions, is currently being developed in labs basing these materials underused secondary industrial by-products which have the ability to reduce amount petroleum-based generated order minimize environmental harm and while ensuring quality safety. This study presents a sustainable biopolymeric combination based bacterial nanocellulose grafted yeast films, its potential improve matrices properties, influence plasticizer...

Abstract This paper reports on the 3D printing of flexible and stretchable parts based multiwall carbon nanotube (MWCNT)/polyester-based thermoplastic polyurethane (TPU) nanocomposites. The rheological properties WCNT/TPU nanocomposites with different wt% MWCNTs (0.1–3) were determined used as guidance for extrusion processes. MWCNT/TPU filaments extruded parts. mechanical, electrical, piezoresistive response nanocomposite printed under static monotonic loading was studied. experimental...

Multi-walled carbon-nanotubes (MWCNTs) were melt-mixed with three different thermoplastic matrices (polypropylene, PP, polycarbonate, PC, and polyurethane, TPU) to produce nanocomposites filler contents (1, 3, 5 wt.%). Initial nanocomposite blends (in the shape of pellets) tested under differential scanning calorimetry evaluate effect melt mixing stage. Nanocomposite samples produced by compression moulding in a laboratory-scale system, quasi-static (bending, indentation), dynamic mechanical...

Understanding the flow behavior of polymer/carbon nanotube composites prior to melt processing is important for optimizing conditions and final product properties. In this study, shear viscosity, specific volume thermal conductivity low-density polyethylene (LDPE) filled with multi-walled carbon nanotubes (MWCNTs) were investigated representative using capillary rheometry. The experimental results show a significant increase in viscosity LDPE/MWCNT composite loadings higher than 1 wt.%. Upon...

In this work, the viscoelastic behavior of polypropylene (PP)/multi-walled carbon nanotube (MWCNT) nanocomposites was investigated by indentation testing and phenomenological modeling. Firstly, tests including two-cycle were carried out on PP/MWCNT nanocomposite with three MWCNT loadings (1, 3 5 wt %). Next, Maxwell-Voigt-Kelvin model coupled used to predict shear creep compliance function equivalent modulus. The hardness elastic modulus extracted based Oliver Pharr method compared predicted...

Abstract Although the production of polymer/carbon nanotube (CNT) nanocomposites has grown exponentially over last years for a variety applications, availability polymer/CNT filaments use in commercial 3D printing systems is very limited, and, currently, little known about printability recycled nanocomposites. In this respect, fused filament fabrication (FFF) thermoplastic polyurethane (TPU)/CNT was investigated with special focus on piezoresistive behavior. Mechanically and virgin TPU/CNT...