In this work, different materials for three-dimensional (3D)-printing were studied, which based on polycaprolactone with two natural additives, gum rosin, and beeswax. During the 3D-printing process, bed extrusion temperatures of each formulation established. After, obtained characterized by mechanical, thermal, structural properties. The results showed that containing a mixture rosin beeswax as additive behaved better during process. Moreover, miscibility compatibility between additives...

Completely biobased and biodegradable thermoplastic starch (TPS) based materials with a tunable performance were prepared for food packaging applications. Five blends by blending TPS 10 wt%. of different pine resins derivatives: gum rosin (GR), disproportionated (RD), maleic anhydride-modified (CM), pentaerythritol ester (LF), glycerol (UG). The characterized in terms thermo-mechanical behavior, surface wettability, color performance, water absorption, X-ray diffraction pattern,...

Fully bio-based materials based on thermoplastic starch (TPS) were developed starting from corn plasticized with glycerol. The obtained TPS was further blended five pine resin derivatives: gum rosin (GR), disproportionated (dehydroabietic acid, RD), maleic anhydride modified (CM), pentaerythritol ester of (LF), and glycerol (UG). TPS–resin blend formulations processed by melt extrusion injection moulding to simulate the industrial conditions. characterized in terms mechanical, thermal...

Mater-Bi® NF866 (MB) was blended with gum rosin and two pentaerythritol esters of (labeled as LF UT), additives, to produce biobased compostable films for food packaging or agricultural mulch films. The were prepared by blending MB 5, 10, 15 wt.% each additive. obtained characterized optical, colorimetric, wettability, oxygen barrier properties. Moreover, the additives MB-based disintegrated under composting conditions effect additive on biodegradation rate studied. All homogeneous optically...

Polybutylene adipate-co-terephthalate (PBAT) is a biodegradable polymer with good features for packaging applications. However, the mechanical performance and high prices of PBAT limit its current usage at commercial level. To improve properties reduce cost PBAT, pine resin derivatives, gum rosin (GR) pentaerythritol ester GR (UT), were proposed as sustainable additives. For this purpose, was blended 5, 10, 15 wt.% additives by melt-extrusion followed injection moulding. The overall...

This study evaluates the effect of CaCO3 fillers extracted from waste eggshells on 3D-printed PLA performance. Samples neat and reinforced with embedded different wt.% were prepared using an FDM (fused deposition modeling) technology. The samples examined mechanical, dynamic thermal, thermal decomposition analyses. results revealed increasing elastic moduli, tensile strength, flexure as filler content increased. rheological MFR tests showed that did not influence PLA-based samples’...

The present work analyzes the influence of modified, epoxidized and maleinized corn oil as a plasticizing and/or compatibilizing agent in PLA–PHB blend (75% PLA 25% PHB wt.%). chemical modification processes were successfully carried out different quantities used, between 0 10% wt.%. blends obtained characterized by thermal, mechanical, morphological, disintegration tests under composting conditions. It was observed that to achieve same effect, less (MCO) is needed than (ECO). Both oils...

Abstract There is a growing interest in the use of non‐polluting compounds, which come from renewable sources, and performance their scope equivalent to synthetic similes. In this work, five types rosins different sources were studied, verifying existence differences that can be inferred subsequent application as material additives. For study, analyzed using gas‐mass chromatographic techniques, infrared spectrophotometry (FTIR), differential scanning calorimetry (DSC), thermogravimetric...

The present study aims to investigate the effects of gum rosin (GR) microspheres coating over hydrophobicity outer layer a polypropylene (PP) based surgical face mask. was deposited surface mask by electrospraying technique. deposition GR confirmed field emission scanning electron microscopy (FESEM) and Fourier transform infrared spectroscopy (FTIR) analysis. thermal analysis determined cooperative effect between fibre increase maximum degradation rate temperature onset temperature. To...

Poly(butylene succinate) (PBS) is one of the contaminants in Poly(ethylene terephthalate) (PET) recycling process. It known that high contents PBS PET significantly reduce properties, but effect low on has yet to be studied. This work studied influence recycled PET. Five formulations were prepared, and properties relative affinity, mechanical, thermal, disintegration under composting conditions assessed. The solubility parameter indicated are miscible. However, FESEM images show slight marks...

In this study, formulations of thermoplastic starch (TPS) with 5, 10, and 15 parts per hundred resin (phr) raw peach gum (PG) were prepared by melt extrusion followed injection molding to obtain standard specimens for characterization. addition, biodegradable films developed compression molding. It was determined that TPS 5 phr 10 PG presented similar mechanical behavior pure after the processing. However, results indicated adding in slowed down starch’s retrogradation, delaying structure’s...

Acute intermittent porphyria (AIP) is an inherited rare hepatic disorder due to mutations within the hydroxymethylbilane gene. AIP patients with active disease overproduce aminolevulinic acid (ALA) and porphobilinogen (PBG) in liver which are exported inducing severe neurological attacks. Different metabolic abnormalities have been described be associated this condition. The goal of research was explore metabolome symptomatic by state-of-the art liquid chromatography-tandem mass spectrometry...

This research highlights the importance of addressing bioplastic contamination in recycling processes to ensure quality recycled material and move towards a more sustainable circular economy. Polyethylene (PE) is conventional plastic commonly used packaging for which large amounts waste are produced; therefore, PE generally has an established process. However, biodegradable polymers stream could impact recycling. study, focuses on polyethylene that been polluted with commercial thermoplastic...

Thermoplastic starch (TPS) has gained considerable attention during the last few years in developing starch-based biodegradable food packaging materials or edible coatings due to its high availability and low cost. TPS is manufactured from plasticized with food-grade plasticizers, making it suitable for contact applications. In addition, bio-based biodegradable, which, an environmental perspective, closes circle of circular economy. However, industrial application somewhat limited poor...

Abstract The effects of ionizing radiation in promoting the abiotic degradation mechanisms oxo‐degradable plastic bags were studied. Commercial bags, containing pro‐oxidant additives, irradiated with gamma photons and accelerated electrons at doses 5 10 kGy. Then, exposed to degradation, either thermal aging or weathering. Mechanical microstructural characterizations performed follow degradation. Plastic additives did not show important changes their structure after aging. Meanwhile,...

In this work, the presence of biodegradable polymers in recycled plastic materials was characterized using readily available techniques. Recycled polypropylene (PP), polystyrene (PS) and polyethylene terephthalate (PET) were studied. The contamination these plastics with polylactic acid (PLA), polyhydroxybutyrate (PHB) thermoplastic starch (TPS) simulated 10 wt.% contaminant. Fourier transform infrared spectrometry (FTIR) differential scanning calorimetry (DSC) used as characterization...

Bilayer systems, consisting of electrosprayed gum rosin microspheres (eGR) and poly(ε‐caprolactone) (PCL), were prepared. First, the electrospraying processing conditions GR in two different solvents, dichloromethane, chloroform, optimized. Various polymeric solution flow rates applied voltages tested morphologically analyzed terms particle size distribution density. The at which a homogeneous narrow was achieved chosen as best for each solvent. eGR deposited onto compression‐molded PCL film...

<title>Abstract</title> The influence of a highly complex modified commercial rosin resin (Unik Print, UP) on the thermomechanical performance four grades polylactic acid (PLA) has been evaluated and compared. Comparative experiments were carried out with polylactides different molecular weights phase structures. melt-extruded formulations prepared by considering 3 parts per hundred resins (phr) resin, which was previously verified to be suitable amount UP effective enhance PLA performance....

In recent years, the production and consumption of plastics has increased. This growth in resulted an increasing amount plastic waste, which is a global problem. Among plastics, high density polyethylene (HDPE) one most widely used polymers packaging industry, so its waste recycling process. One main disadvantages accepting recycled HDPE processes odour, makes it impossible to use lines. The aim this work reduce and/or eliminate odours present samples selected for through sepiolites. FTIR...

COOPERATIVE LEARNING IN THE NANOMATERIALS SUBJECT TO OBTAIN DIFFERENT NANOSTRUCTURED MATERIALS THROUGH VARIOUS TECHNIQUES

Appears in: EDULEARN23 Proceedings Publication year: 2023Pages: 6767-6773ISBN: 978-84-09-52151-7ISSN: 2340-1117doi: 10.21125/edulearn.2023.1782Conference name: 15th International Conference on Education and New Learning TechnologiesDates: 3-5 July, 2023Location: Palma, Spain