Binary blends based on poly(lactic acid) (PLA) and polycaprolactone (PCL) were prepared by melt mixing in a twin-screw co-rotating extruder order to increase the low intrinsic elongation at break of PLA for packaging applications. Although PCL show miscibility, presence leads marked improvement ductile properties PLA. Various mechanical evaluated terms content up 30 wt% PCL. In addition tensile flexural properties, Poisson's ratio was obtained using biaxial extensometry evaluate transversal...

This research work aims to study the influence of reprocessing cycles on mechanical, thermal, and thermomechanical properties polylactide (PLA). To this end, PLA was subjected as many six extrusion resultant pellets were shaped into pieces by injection molding. Mechanical characterization revealed that presented relatively similar up third cycle, whereas further induced an intense reduction in ductility toughness. The effect also studied changes melt fluidity, which showed a significant...

In this work, low-pressure nitrogen plasma has been used to improve wettability in a polyurethane film. Evaluation of changes carried out using contact angle measurements. Furthermore, plasma-treated films have subjected air aging evaluate the extent hydrophobic recovery. X-ray photoelectron spectroscopy (XPS) study surface functionalization; topography related with etching mechanism followed by scanning electron microscopy (SEM), atomic force (AFM) and weight loss study. The results show...

Abstract This article presents a study on the stabilization of polypropylene against thermo‐oxidation and UV radiation by using natural phenolic compounds derived from structures flavonoids: flavone (chrysin), flavanol (quercetin), two flavanone glycosides (hesperidin naringin), flavanoligand (silibinin). Thermal has been assessed in an oxidizing atmosphere means differential scanning calorimetry both isothermal dynamic conditions. In addition, effectiveness these as thermal stabilizers at...

In the present study valorization of wastes from Posidonia oceanica (PO) has been carried out in order to obtain a fully biobased composite material combination with polyethylene obtained sugar cane as matrix. Morphological analysis by scanning electron microscopy (SEM) fractured surfaces impact tests revealed homogenous distribution particles PO, consequence, good balanced properties have for composites PO contents 5–40 wt%. Thermal studied through differential calorimetry (DSC) and...

Abstract The use of maleinized linseed oil ( MLO ) as a potential biobased plasticizer for poly(lactic acid) PLA industrial formulations with improved toughness was evaluated. content varied in the range 0–20 phr (parts by weight per hundred parts ). Mechanical, thermal and morphological characterizations were used to assess an environmentally friendly formulations. Dynamic mechanical analysis differential scanning calorimetry revealed noticeable decrease glass transition temperature about...

Green composites made of polylactide (PLA) and short flaxseed fibers (FFs) at 20 wt % were successfully compounded by twin-screw extrusion (TSE) subsequently shaped into pieces injection molding. The linen waste derived FFs subjected to an alkalization pretreatment remove impurities, improve the fiber surface quality, make more hydrophobic. alkali-pretreated reinforced PLA, leading green composite with higher mechanical strength. However, also showed lower ductility toughness lignocellulosic...

This research reports the manufacturing and characterization of green composites made from recycled polypropylene obtained remnants non-woven fabrics used in textile industry further reinforced with short hemp fibers (SHFs). To improve interaction reinforcing polymeric matrix, two types compatibilizing agents (maleic anhydride grafted, PP-g-MA, maleinized linseed oil, MLO) were added during melt-processing, percentage which had to remain constant concerning amount fiber loading ensure...

Abstract This study demonstrates the potential of different cinnamate esters, namely methyl trans‐cinnamate (MC), isobutyl (IBC), allyl (AC), and ethyl (EC), as environmentally friendly plasticizers for polylactide (PLA). Plasticized PLA formulations with a constant nominal wt% 20 each plasticizer are compounded in twin‐screw co‐rotating extruder subsequently processed by injection molding. The results show exceptional plasticization efficiency AC an increase elongation at break from 3.9%...

In this work, green composites from renewable resources were manufactured and characterized. A fibrous material derived Posidonia oceanica wastes with high cellulose content (close to 90 wt% of the total organic component) was used as reinforcing material. The polymeric matrix bind fibers a protein (wheat gluten) type Composites made by hot-press molding varying gluten on in 10–40 range. Mechanical properties evaluated standardized flexural tests. Thermo-mechanical behavior dynamic...

Hydroxyapatite (HA), a naturally occurring calcium orthophosphate, possesses the most similar chemical composition to human bone. In this research work, composite materials were prepared using poly(lactic acid) (PLA) as polymer matrix and HA an osteoconductive filler for potential use in medical applications. Composites with varying content comprised 10–30 wt% range obtained by extrusion-compounding followed injection molding. The effect of loading on overall properties was assessed...

ABSTRACT This work focuses on poly(lactic acid) (PLA) formulations with improved toughness by physical blending thermoplastic maize starch (TPS) plasticized aliphatic–aromatic copolyester up to 30 wt %. A noticeable increase in is observed, due the finely dispersed spherical TPS domains PLA matrix. It worth note remarkable elongation at break that changes from 7% (neat PLA) 21.5% for % TPS. The impact‐absorbed energy markedly relatively low values of neat (1.6 J m −2 ) more than three times....