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...

This work reports the potential of poly(lactic acid)—PLA composites with different halloysite nanotube (HNTs) loading (3, 6 and 9 wt%) for further uses in advanced applications as HNTs could be used carriers active compounds medicine, packaging other sectors. focuses on effect mechanical, thermal, thermomechanical degradation PLA HNTs. These can manufactured by conventional extrusion-compounding followed injection molding. The obtained results indicate a slight decrease tensile flexural...

This study reports the effect of poly(butylene succinate-co-adipate) (PBSA) on mechanical performance and shape memory behavior poly(lactic acid) (PLA) specimens that were manufactured by injection molding hot-press molding. The poor miscibility between PLA PBSA was minimized addition an epoxy styrene-acrylic oligomer (ESAO), which commercially named Joncryl®. It incorporated during extrusion process. Tensile, impact strength, hardness tests carried out following international standards....

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 deals with the influence of different curing and post-curing temperatures on mechanical thermomechanical properties as well gel time an epoxy resin prepared by reaction diglycidyl ether bisphenol A (DGEBA) amine hardener a reactive diluent derived from plants at 31 wt %. The highest performance was obtained for resins cured moderate-to-high temperatures, that is, 80 ° C 90 , which additionally showed significant reduction in time. effect ascribed to formation stronger polymer...

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...

In this study, yerba mate waste (YMW) was used to produce a kombucha beverage, and the obtained microbial cellulose produced as byproduct (KMW) reinforce mechanically recycled poly(lactic acid) (r-PLA) matrix. Microbial cellulosic particles were also in pristine for comparison (KMN). To simulate revalorization of industrial PLA products rejected during production line, subjected three extrusion cycles, resultant pellets (r3-PLA) then plasticized with 15 wt.% acetyl tributyl citrate ester...

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%...

This research presents a cure kinetics study of an epoxy system consisting partially bio-sourced resin based on diglycidyl ether bisphenol A (DGEBA) with amine hardener and biobased reactive diluent from plants representing 31 wt %. The kinetic has been carried out using differential scanning calorimetry (DSC) under non-isothermal conditions at different heating rates. Integral derivative isoconversional methods or model free (MFK) have applied to the experimental data in order evaluate...

In the present study, partially bio-based polyethylene terephthalate (bio-PET) was melt-mixed at 15-45 wt% with recycled (r-PET) obtained from remnants of injection blowing process contaminant-free food-use bottles. The resultant compounded materials were thereafter shaped into pieces by molding for characterization. Poly(styrene-co-glycidyl methacrylate) (PS-co-GMA) added 1-5 parts per hundred resin (phr) polyester blend during extrusion to counteract ductility and toughness reduction that...

This work reports the effect of addition an oligomer lactic acid (OLA), in 5-20 wt% range, on processing and properties polylactide (PLA) pieces prepared by injection molding. The obtained results suggested that here-tested OLA mainly performs as impact modifier for PLA, showing a percentage increase strength approximately 171% injection-molded containing 15 OLA. A slight plasticization was observed decrease glass transition temperature (T

This work reports the development and characterization of green composites based on polylactide (PLA) containing fillers additives obtained from by-products or waste-streams linen processing industry. Flaxseed flour (FSF) was first produced by mechanical milling golden flaxseeds. The resultant FSF particles were melt-compounded at 30 wt% with PLA in a twin-screw extruder. Two multi-functionalized oils derived linseed, namely epoxidized linseed oil (ELO) maleinized (MLO), also incorporated...

This work reports on the development of fibers based natural mango kernel starch (MKS) with diameters in nanoscalse by means electrospinning technique. MKS was extracted from kernels and two synthetic polymers, namely polyvinyl alcohol (PVA) polyvinylpyrrolidone (PVP), were blended order to improve its spinnability, obtaining MKS/PVA MKS/PVP a 10 wt% total polymer concentration. Several conditions (voltage flux) tested solutions concentrations ranging 0 5 for both group fibers. The...

Abstract In this work, different contents (0.25, 0.50, 0.75, and 1 phr) of dicumyl peroxide (DCP) are incorporated into the bio‐based high‐density polyethylene (bioPE)/kraft lignin (KL) blends with a composition 80 20 wt%, respectively aim improving overall performance. The samples obtained by reactive extrusion injection‐molding process, then their performance is assessed tensile tests, thermal analysis, optical surface appearance, wettability studies. mechanical properties confirm...

Maleinized linseed oil (MLO) has been successfully used as biobased compatibilizer in polyester blends. Its efficiency polymer composites with organic and inorganic fillers, compared to other traditional also proved. The goal of this work is optimize the amount MLO on poly(lactic acid)/diatomaceous earth (PLA/DE) open new potential these materials active packaging industry without compromising environmental composites. DE remains constant at 10 wt% varies from 1 15 phr (weight parts per 100...

The curing process of epoxy resin based on epoxidized linseed oil (ELO) is studied using dynamic differential scanning calorimetry (DSC) in order to determine the kinetic triplet (Ea, f(α) and A) at different heating rates. apparent activation energy, Ea, has been calculated by several integral isoconversional methods, namely Kissinger, Friedman, Flynn–Wall–Ozawa (FWO), Kissinger–Akahira–Sunose (KAS) Starink. All methods provide similar values Ea (between 66 69 kJ/mol), this shows...

This work focuses on the manufacturing and characterization of highly environmentally friendly lightweight sandwich structures based polylactide (PLA) honeycomb cores PLA-flax fabric laminate skins or facings. PLA honeycombs were manufactured using sheets with different thicknesses ranging from 50 to 500 μm. The shaped into semi-hexagonal profiles by hot-compression molding. After this stage, bonded together give hexagonal panels. molding stacking two Biotex flax/PLA fabrics 40 wt% fibers....

This work reports on the development of polylactide (PLA)/mango kernel seed flour (MKSF) composites combined with tributyrin (TBN) and triacetin (TCN) as plasticizers.Thus, wood plastic (WPC) are obtained by extrusion injection-molding processes.The solubility, mechanical, morphological, thermal, colorimetric, water absorbance, flowability, disintegrability properties evaluated.The ductility PLA+MKSF composite is improved plasticizing effect TBN TCN (10 phr (parts per hundred resin)...

The study successfully developed thermoset materials utilizing acrylate epoxidized soybean oil (AESO) and allyl cinnamate (ACIN) with tert-butyl peroxybenzoate (TBPB) as the initiator. Isothermal curing at temperatures between 110 °C to 140 of formulations, showed that higher accelerated conversion process. temperature increased degree conversion, leading obtain best flexural strength for samples cured 130 °C. However, 120 exhibited better impact properties due a lower which allows more...

The purpose of this paper is to study and outline the effects infill parameters (percentage pattern) using fused deposition manufacturing on mechanical properties PLA printed samples. Three patterns were tested (rectilinear, honeycomb Hilbert curve) while percentage was at three levels (20, 60 90 per cent). examined tensile strength, modulus, elongation, Charpy impact test, morphology fractures test thermo analysis. Also, a thermal analysis done differential scanning calorimetry raw polymer...

Abstract The potential of persimmon peel waste (PPF) as renewable active filler in biobased polyethylene composites, with improved antioxidant properties and resistance to water uptake is shown. To improve the interaction between hydrophilic biofiller highly hydrophobic matrix, several compatibilization approaches are assessed. first approach consists using a grafted copolymer maleic anhydride (PE ‐g‐ MA). second modifying PPF surface two treatments before compounding Bio‐HDPE. on...

In this work, we report the development and characterization of polylactide (PLA) blends with improved toughness by addition 10 wt.% lactic acid oligomers (OLA) assess feasibility reactive extrusion (REX) injection moulding to obtain high impact resistant moulded parts. To improve PLA/OLA interactions, two approaches are carried out. On one hand, different dicumyl peroxide (DCP) concentrations is evaluated and, on other effect maleinized linseed oil (MLO) studied. The DCP MLO content used in...

In the present work, green-composites from a partially biobased epoxy resin (BioEP) reinforced with lignocellulosic particles, obtained flax industry by-products or wastes, have been manufactured by casting. this study, flaxseed has crushed two different mechanical milling processes to achieve particle sizes, namely coarse size (CFF), and fine (FFF) flour, ranging between 100–220 µm 40–140 respectively. Subsequently, loadings of each (10, 20, 30, 40 wt%) were mixed BioEP poured into mold...