Effect of the chain length of geraniol esters on the plasticization efficiency with poly(lactide)

Polymer, Journal Year: 2023, Volume and Issue: 290, P. 126522 - 126522

Published: Nov. 22, 2023

This work reports on the development of environmentally friendly PLA formulations utilizing different esters derived from geraniol as plasticizers. Geranyl formate, acetate, propionate, butyrate, isovalerate and caproate at 10 wt.% were combined with in that produced through extrusion injection moulding processes. Theoretical solubility parameter studies predicted good miscibility between all was confirmed by tensile test, which showed elongation break values 200 300 %, totally contrast 8 % value neat PLA. acetate geranyl formate exhibited highest behavior. These supported FESEM images, clear signs plasticization. The plasticization effect further corroborated DSC DMTA analysis, where a decrease glass transition temperature observed typical 60 °C for down to 40–50 plasticized blends. related an enhanced chain mobility amorphous regions Moreover, plasticizers slightly increased water absorption capabilities PLA, demonstrated increase contact angle uptake 11 weeks.

Language: Английский

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High performance poly(L-lactic acid)-based film by one-step synthesis of poly (L-lactic acid-co-butylene itaconate-co-glycolic acid) for efficient preservation of yogurt storage

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 268, P. 131746 - 131746

Published: April 21, 2024

Language: Английский

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Enhancing Polylactic Acid Properties with Graphene Nanoplatelets and Carbon Black Nanoparticles: A Study of the Electrical and Mechanical Characterization of 3D-Printed and Injection-Molded Samples

Polymers, Journal Year: 2024, Volume and Issue: 16(17), P. 2449 - 2449

Published: Aug. 29, 2024

This study investigates the enhancement of polylactic acid (PLA) properties through incorporation graphene nanoplatelets (GNPs) and carbon black (CB) for applications in 3D printing injection molding. The research reveals that GNPs CB improve electrical conductivity PLA, although remains within insulating range, even with up to 10% wt nanoadditives. Mechanical characterization shows nanoparticle addition decreases tensile strength due stress concentration effects, while dispersants like polyethylene glycol enhance ductility flexibility. compares materials processed by molding printing, noting yields isotropic properties, resulting better mechanical properties. Thermal analysis indicates influence crystallization behavior PLA small changes melting behavior. Dynamic Analysis (DMTA) results show how glass transition temperature fluctuate. Overall, nanoadditives into holds potential enhanced performance specific applications, though achieving optimal conductivity, strength, thermal requires careful optimization type, concentration, dispersion methods.

Language: Английский

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Plasticization of Polylactide Using Biobased Epoxidized Isobutyl Esters Derived from Waste Soybean Oil Deodorizer Distillate

Journal of Polymers and the Environment, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 4, 2024

Language: Английский

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Polylactide/polyvinyl acetate blends containing different molecular weights of poly(ethylene glycol)

Iranian Polymer Journal, Journal Year: 2024, Volume and Issue: 33(12), P. 1689 - 1699

Published: June 24, 2024

Language: Английский

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Innovative Poly(Lactic Acid) Blends: Exploring the Impact of the Diverse Chemical Architectures from Itaconic Acid

Polymers, Journal Year: 2024, Volume and Issue: 16(19), P. 2780 - 2780

Published: Sept. 30, 2024

Environment-friendly polymer blends of poly(lactic acid) (PLA) and itaconic acid (IA), poly(itaconic (PIA), acid)-co-poly(methyl itaconate) (Cop-IA), net-poly(itaconic acid)-ν-triethylene glycol dimethacrylate (Net-IA) were performed via melt blending. The compositions studied 0.1, 1, 3, 10 wt% the diverse chemical architectures. research aims to study understand effect IA its different architectures on mechanical, rheological, thermal properties PLA. PLA/IA, PLA/PIA, PLA/Cop-IA, PLA/Net-IA characterized by dynamic mechanical analysis, rotational rheometer (RR), thermogravimetric differential scanning calorimetry, X-ray diffraction, electron microscopy. complex viscosity, storage module, loss module for RR observed in following order: PLA/Net-IA, PLA/PIA > PLA PLA/IA. Thermal stability improved with increasing concentrations Cop-IA Net-IA. In same way, enhanced. addition, micrographs illustrated formation fibrillar structures all blends. crystallinity degree displayed higher values that contain Net-IA than PIA. Therefore, can influence these properties, which have potential applications disposable food packing.

Language: Английский

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Incorporation of Argan Shell Flour in a Biobased Polypropylene Matrix for the Development of High Environmentally Friendly Composites by Injection Molding

Polymers, Journal Year: 2023, Volume and Issue: 15(12), P. 2743 - 2743

Published: June 20, 2023

In this study, a new composite material is developed using semi bio-based polypropylene (bioPP) and micronized argan shell (MAS) byproducts. To improve the interaction between filler polymer matrix, compatibilizer, PP-g-MA, used. The samples are prepared co-rotating twin extruder followed by an injection molding process. addition of MAS improves mechanical properties bioPP, as evidenced increase in tensile strength from 18.2 MPa to 20.8 MPa. reinforcement also observed thermomechanical properties, with increased storage modulus. thermal characterization X-ray diffraction indicate that leads formation α structure crystals matrix. However, lignocellulosic affinity for water. As result, water uptake composites increases, although it remains relatively low even after 14 weeks. contact angle reduced. color changes similar wood. Overall, study demonstrates potential byproducts their properties. should be taken into account applications.

Language: Английский

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Desarrollo y caracterización de polímeros de alto rendimiento medioambiental derivados de residuos agroindustriales y aditivos de origen renovable

Published: Feb. 28, 2024

This work reports on the development of fi bers 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 MKS order to improve its spinnability, obtaining MKS/ PVA PVP a 10 wt% total polymer concentration.Several conditions (voltage fl ux) tested solutions concentrations ranging 0 to5 for both group bers.The morphology all evaluated eld emission scanning electron microscopy (FESEM) their topography analysed atomic force (AFM).MKS/ nanofi obtained diameter range 0.146 0.315 m, "smooth ber concentration threshold" 3 wt%, while PVP, 0.080 0.339 m produced, but 5 beaded bers, as result an excess concentration.Finally, roughness optimal showed quite similar trend that diameter, presenting roughnessess between 80 343 nm.

Language: Английский

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Applied and computational investigation of plasticizing effects of dibutyl maleate on polymethyl methacrylate acrylic resin material

Journal of Molecular Structure, Journal Year: 2023, Volume and Issue: 1296, P. 136826 - 136826

Published: Oct. 12, 2023

Language: Английский

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Optimización de las propiedades de tenacidad e impacto de formulaciones de ácido poliláctico (PLA), mediante mezclas con polímeros flexibles y optimización de los sistemas de compatibilización

Published: Nov. 28, 2023

The objective of this doctoral thesis is the study and development materials based on polylactic acid (PLA), with aim improving its properties for applicability in various industrial sectors.This focuses modification inherent brittleness stiffness PLA by incorporating different materials, such as plasticizers derived from epoxidized vegetable oils maleinized linseed oil called MLO.In addition, creation binary blends higher ductility polymers polycarbonate (PC) polystyrene-b-(ethylene-ranbutylene)-b-styrene (SEBS) investigated, inclusion lactic oligomers (OLA) monoterpenes are explored strategies to improve PLA.This research aims provide advanced sustainable solutions applications that demand improved characteristics.In current context polymer industry, search environmentally friendly has taken an outstanding role.This growing environmental awareness prompted in-depth innovative meet sustainability standards and, at same time, offer exceptional performance.Within framework, present immersed evaluation promising alternatives plasticizers, oligomers, compatibilizers or other blends.The first area incorporation MLO a compatibilizing agent composed (PLA) styrene-b-(ethylene-ranbutylene)-b-styrene (SEBS).The results strong evidence significantly outperforms traditional petroleum-derived compatibilizers.A noticeable increase impact resistance these achieved, which essential packaging require adequate protection contained products.Furthermore, it noted addition leads slight decrease glass transition temperature (T g ) PLA-rich phase.This effect can be beneficial terms flexibility, particularly relevant products need adaptability variable conditions.The second plane comprehensive comparison between natural origin those petrochemical blends.This analysis confirms compatibilizers, including (ELO), notable advantages without compromising thermal stability.This finding underlines viability biobased specific applications.

Language: Английский

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