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...

Recycling polymers is common due to the need reduce environmental impact of these materials. Polypropylene (PP) one called 'commodities polymers' and it commonly used in a wide variety short-term applications such as food packaging agricultural products. That why large amount PP residues that can be recycled are generated every year. However, current increasing introduction biodegradable industry negatively affect properties if those kinds plastics disposed with traditional plastics. For...

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...

This research work aims at the compatibilization of poly(lactic acid)/poly(butylene adipate-co-terephthalate), PLA/PBAT binary blends by using cottonseed oil derivatives, i.e. epoxidized (ECSO) and maleinized (MCSO) oil.The potential these vegetable oil-based compatibilizers are compared versus effects a conventional styreneacrylic oligomer.The base blend composition was 80 wt% PLA/20 PBAT amount compatibilizer set to 1 7.5 wt%.The different were evaluated on films in terms mechanical...

Abstract The effect of various epoxidized vegetable oils as potential plasticizers for poly(3‐hydroxybutyrate) ( PHB ) was evaluated in terms changes mechanical and thermal properties morphology. is a biodegradable aliphatic polyester obtained from bacterial fermentation. High stiffness fragility are two its main drawbacks. To overcome this behaviour, plasticized with amounts different oils: linseed oil ELO soybean ESBO ). total content varied the range 5 phr (per hundred resin) to 20...

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....

ABSTRACT The effect of three additives derived from pine resin, namely, gum rosin (GR) and two pentaerythritol ester GR, Lurefor (LF) Unik Tack (UT), in 5, 10, 15 wt %, on the properties Mater‐Bi, based plasticized starch, poly(butylene adipate‐co‐terephthalate), poly(ε‐caprolactone) (PCL), obtained by injection molding processes, was studied. mechanical, microstructural, thermal were evaluated. LF had a cohesive behavior with components increasing toughness material up to 250% accompanied...

In this study, different compatibilizing agents were used to analyze their influence on immiscible blends of polylactide (PLA) and biobased high-density polyethylene (bioPE) 80/20 (wt/wt). The vinyl acetate (EVA) with a content 33% acetate, polyvinyl alcohol (PVA), dicumyl peroxide (DPC). each agent the mechanical, thermal, microstructural properties PLA-bioPE blend was studied using microscopic techniques (i.e., field emission electron microscopy (FESEM), transmission (TEM), atomic force...

Abstract The modification of PLA by melt compound with gum rosin (GR) and pentaerythritol ester GR (PEGR) was investigated studying the mechanical thermal performance, blends morphology, wettability, water absorption. Standard testing specimens for characterization were made at a variate resin content 5, 10, 15 part per hundred (phr) manufactured injection molding. It found that PEGR had lubricating effect in polymeric chains, resulting remarkable increase 790 193% flow index only 5 phr...

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...

The use of a new bio-based plasticizer derived from epoxidized chia seed oil (ECO) was applied in poly(lactic acid) (PLA) matrix. ECO used due to its high epoxy content (6.7%), which led an improved chemical interaction with PLA. Melt extrusion plasticize PLA different the 0–10 wt.% range. Mechanical, morphological, and thermal characterization carried out evaluate effect percentage. Besides, disintegration migration tests were studied assess future application packaging industry. Ductile...

This work evaluates for the first time potential of an environmentally friendly plasticizer derived from epoxidized Brazil nut oil (EBNO) biopolymers, such as poly(lactic acid) (PLA). EBNO was used due to its high epoxy content, reaching oxirane oxygen content 4.22% after 8 h epoxidation a peroxide/oil ratio 2:1. Melt extrusion plasticize PLA formulations with different contents in range 0–10 phr. The effects amounts matrix were studied by performing mechanical, thermal, thermomechanical,...

Abstract Gum rosin esters are some of the most common gum derivatives used in different applications, such as coatings, paper, varnishes, chewing gum, and food industries. In this study, additives for polylactic acid (PLA) to improve its processability thermal stability. Blends an amorphous PLA with two esters, pentaerythritol ester glycerol ester, were prepared by melt extrusion process concentrations from 1, 3, 5 phr. Besides comparison degradation, microstructure assessment, flow index...

ABSTRACT The aim of this study was to analyze the durability a plasma treatment on surface poly(lactic acid) (PLA). We used atmospheric‐plasma with air improve wettability PLA by evaluating aging effect under controlled conditions relative humidity (RH) and temperature (25% RH 25°C). studied measuring contact angle, calculating energy, observing changes in resistance PLA–PLA adhesive bonds. These techniques allowed us evaluate hydrophobic recovery phenomenon that suffered as consequence...

This works aims at the development thermosetting resins derived from epoxidized linseed oil (ELO) of high biobased content, by using a mixture crosslinking agents, i.e. methyl nadic anhydride (MNA) and maleinized (MLO).By only MNA as agent, obtained are characterized stiffness and, consequently, fragility.When MLO content increasing in mixture, up to 25 wt%, decrease mechanical resistant thermomechanical is detected, thus indicating that can provide flexibility ELO-based which an interesting...

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...

In this study, for the first time, Brazil nut seed oil was chemically modified with maleic anhydride to obtain maleinized (MBNO). The same process developed hemp (MHO). use of MBNO and MHO studied as bio-based plasticizers by incorporating them different contents ranging from 0 10 phr in a polylactic acid (PLA) matrix. By means mechanical, thermal thermomechanical characterization techniques, properties formulations were evaluate plasticizing effect MHO. With addition both plasticizers,...

Gum rosin (GR) was used as a natural additive to improve the compatibility between polylactic acid, PLA, and poly(butylene adipate-co-terephthalate, PBAT, blended with 20 wt.% of PBAT (PLA/PBAT). The soft component increase ductility PLA its fracture toughness. coalescence domains possible due plasticization effect GR component. These contributed increasing toughness final material variation control domains’ size consequently, reducing stress concentration points. in contents 5, 10, 15, phr....

In this work, different silk fillers combined with maleinized corn oil (MCO), as environmentally friendly plasticizers, were used to modify the mechanical and thermal properties of polylactic acid (PLA) composites. Melt extrusion injection obtain samples a content 10 wt.% MCO 0.5 phr fillers: crushed (CS), fibroin microparticles (SFM), nanoparticles (SFN). PLA formulation g CS per hundred grams composite (phr) showed highest increase in ductile an elongation at break approximately 1400%,...

Abstract Biodegradable materials based on poly (lactic acid) (PLA) and a phenolic free modified rosin resin were obtained studied to control the biodegradability under composting conditions of materials. The was blended in concentrations 1, 3, 5, 10, 15 parts per hundred (phr) base polymer using industrial plastic processing techniques. Additionally, study effect compatibility PLA, physical performance, water absorption, mechanical behavior, thermal stability, microstructure assessed....