Due to its ester bonds, poly(lactic acid) (PLA) undergoes biodegradation in humid environments, attracting market attention. The goal of this work was observe the garden soil PLA nanocomposites with neat (PLA/CNW) and surfactant modified cellulose nanowhiskers (PLA/CNW/S). Three types surfactants were tested: poly(ethylene glycol) monooleate (PEGMONO) molecular weight 300 1000 Da. films obtained by solution casting, cut strips (2x2) cm buried soil, monitoring temperature humidity. After 90,...

Abstract The reactivity of different polyethylene modifiers based on acrylic acid (AA) and maleic anhydride (MA) with polyamide 6 (PA6) is investigated, using several degrees functionalization. polymer blends are processed in an internal mixer injection molded. Mechanical, rheological, infrared spectroscopy, thermal, thermomechanical properties, morphology evaluated. torque rheometry results show that higher functionalization favored a high PA6. As consequence, there increase the viscosity...

In this work, blends based on poly (lactic acid) (PLA)/acrylonitrile-butadiene-styrene (ABS) compatibilized with maleic anhydride-grafted (SEBS-g-MA) were prepared in a co-rotational twin-screw extruder by varying the concentrations of compatibilizing agent. The influence agent morphology, mechanical, thermal, thermomechanical, and rheological properties materials was analyzed. effect annealing also investigated using injection-molded samples. X-ray diffraction (XRD) results proved that...

The aggregation state of cellulose nanocrystals modified with surfactants (CNC/S) in water and CNC/S powder dispersion stability chloroform were studied correlated mechanical properties nanocomposites poly(lactic acid) (PLA). Four types nonionic used: PEG 300, 1000, poly(ethylene glycol) monooleate, Pluronic ® L44 (PL44). CNC/PL44 showed the smallest size CNC aggregates dispersed before freeze‐drying, as determined by atomic force microscopy. respective also lowest decay rate relative...

For the first time, ultrafiltration (UF) green membranes were prepared through a sustainable route by using PLA as biopolymer and dihydrolevoclucosenone, whose trade name is Cyrene™ (Cyr), dimethyl isosorbide (DMI), ethyl lactate (EL) biobased solvents. The influence of physical-chemical properties solvent on final membrane morphology performance was evaluated. variation polymer concentration in casting solution, well presence Pluronic® (Plu) pore former agent, assessed well. obtained...

Abstract The replacement of these polymers by biodegradable ones is a promising alternative to mitigate the environmental problems caused materials. mixture biopolymers obtained from arrowroot starch (ST) and cactus mucilage (MU) may have its properties enhanced for production food packaging. In this study, it was used solution casting technique develop blends ST MU in different compositions, analyzing their thermal, mechanical, physical–chemical properties. Through principal component...

Fusel oil, a byproduct of ethanol fermentation, mainly consists isoamyl alcohol and isobutanol. These compounds negatively impact distillation by causing fouling corrosion in rectification columns, increasing maintenance costs, affecting quality sensory properties. Despite these drawbacks, fusel oil has extensive applications the fine chemical industry. Its yield vary depending on raw materials fermentation conditions. This research investigates effects pH, supplementation, refrigeration...

In this study, thyme essential oil was added to poly (butylene adipate-co-terephthalate) (PBAT) films in a variety of compositions (0, 1, 2, 5, 10, 15, and 20% w/w), the effect on PBAT's characteristics evaluated. The were produced using casting technique. Thyme (EO) evaluated by mid-infrared, gas chromatography-mass spectrometer, antimicrobial activity. mechanical, thermal tests. results demonstrated that EO has higher concentration o-cymene activity against bacteria Escherichia coli...

Abstract This research intends to create biodegradable packaging films using solution casting method. The are composed of guar gum, carboxymethylcellulose, and blends these materials with citric acid as a crosslinking agent. concentration ranges from 10 30% (w w −1 ). study performs curing treatment at 140°C for 30 min on the dried containing additive promote esterification between polymeric matrix thin have smooth, homogeneous, transparent aspect. Although reaction – evidenced by FTIR...

Polycaprolactone matrix composites reinforced with natural and chemically treated coir were prepared in a laboratory internal mixer studied by differential scanning calorimetry (DSC) tensile tests. The aim of this work was to evaluate the influence filler its surface modification on rheological, mechanical, crystallization behaviors composites. According rheological analysis, higher content, viscosity material lower local pseudoplasticity index. DSC analyses showed that presence anticipates...

The aim of this work was to produce filaments PLA/PBAT and NPK fertilizer adsorbed on organophilized bentonite intended for application in the prototyping biodegradable agricultural artifacts 3D printing, using Fused Deposition Modeling (FDM) technique. This is first time that we have reported composite a printing approach. Systems containing PLA/PBAT, organobentonite were initially processed an internal mixer later extruded as single-screw extruder. prototypes printed by FDM. Structural,...

In this study, a commercial chain extender (Polyad PR 002) in concentrations of 0.5, 1.0, and 1.5% w/w was used as compatibilizer post-consumed PET/PA6 blends (25/75, 50/50 e 75/25) processed laboratory mixer. The degradation rate, phase miscibility, chemical interaction, crystallization, melting behavior, well the thermal stability mixtures, were analyzed by torque rheometry, scanning electron microscopy (SEM), FTIR spectroscopy, differential calorimetry (DSC), thermogravimetry (TGA),...

Mechanical properties, morphology and nonisothermal crystallization of poly(3-hydroxybutyrate) (PHB) blends PHB polystyrene (PS) were studied by tensile tests, scanning electron microscopy (SEM) differential calorimetry (DSC). A two-phase structure composed a matrix nearly spherical particles PS was clearly noticed in SEM images. The presence small amounts (0.5% to 3%) amorphous affected the crystallinity PHB, being more evident when high cooling rates applied. kinetics modeled according...

Abstract This work deals with the rheological, morphological, and thermal properties of composites having poly(ethylene terephthalate) (PET), polyamide‐6 (PA6), their blends as matrices, rice husk ash (RHA) a filler. The study determines effect composition on change in viscosity rate degradation during processing torque rheometer. Our data indicates that stability depend matrix filler concentration. SEM micrographs show both partial adhesion to matrices pullout. Optical microscopy shows...

In this work, recycled poly(ethylene terephthalate) (PETR) was blended with virgin high-density polyethylene (HDPE) in an internal mixer attempt to obtain a material improved properties. A compatibilizer (PE-g-MA) and chain extender (Joncryl) were added the PETR/HDPE blend rheological thermal properties of modified unmodified blends as well those PET HDPE (PETV/HDPE). All characterized by torque rheometry, differential scanning calorimetry (DSC) thermogravimetric analysis (TGA). The data...

The use of natural antimicrobial additives, such as orange essential oil (OO), can be a promising possibility to increase food shelf life with the aid active packaging. This study aimed develop an packaging using and PBAT - poly (butylene adipate co- terephthalate) store mozzarella cheese produced by fine film extruder 5, 10, 15% OO (w/w). In results, D-limonene was oil’s main constituent activity against E. aerogenes, coli, S. aureus. addition did not alter thermal stability film. water...