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 DOI Creative Commons
Ramon Tejada‐Oliveros

Опубликована: Ноя. 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.

Язык: Английский

New tartrate and α-tocopherol based environmentally friendly plasticizers for improvement of the ductility of polylactic acid DOI Creative Commons
Jose Javier Gazquez-Navarro, Juan Ivorra Martínez,

L. Sanchez-Nacher

и другие.

Polymer, Год журнала: 2024, Номер 308, С. 127361 - 127361

Опубликована: Июль 5, 2024

This study focuses on developing environmentally friendly plasticized poly(lactide) (PLA) formulations using tartaric acid and α-tocopherol at 20 wt%. The extrusion injection molding processes demonstrated the industrial applicability of these plasticizers. Mechanical tests revealed positive results for tartrate-based plasticizers, with elongation break surpassing 220 %, while succinate achieved 170 %. However, acetate showed limited PLA plasticization. Field emission scanning electron microscopy confirmed plasticization in fractured surfaces. Thermal analysis indicated a reduction PLA's glass transition temperature (Tg) from 60 °C to around 30 underscoring tartrates' exceptional efficiency. cold crystallization (Tcc) decreased all samples due enhanced chain mobility. Thermomechanical dimensional shrinkage, dimethyl tartrate (DMT) causing less pronounced effects. Generally, tartrates yielded superior properties, attributed their lower molecular weight compared α-tocopherol-derived Notably, plasticizers employed are an eco-friendly approach improve processability enhancing ductile properties.

Язык: Английский

Процитировано

9
Enhancing the compatibility and performance of poly (lactic acid) and thermoplastic polyolefin elastomer blends through a dual compatibilization strategy DOI
Yongchao Li, Ying Qiu, Wei Lan

и другие.

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 140513 - 140513

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

1
Thorough characterization of polyoxyethylene sorbitan monopalmitate plasticized PLA/pectin composites: Insights into material properties and thermomechanical performance DOI Creative Commons
Juan Ivorra Martínez, Luís Quiles-Carrillo, Nestor Montañés Muñoz

и другие.

Industrial Crops and Products, Год журнала: 2025, Номер 226, С. 120675 - 120675

Опубликована: Фев. 13, 2025

Язык: Английский

Процитировано

1
Optimization of the ductile properties of poly(lactic acid) (PLA) using green citrate-based plasticizers and itaconic anhydride grafted PLA (PLA-g-IA) DOI Creative Commons
Carlos Lazaro‐Hdez, Ana Pilar Valerga Puerta,

Jaume Gomez-Carturla

и другие.

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 142034 - 142034

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

1
Effect of the chain length of geraniol esters on the plasticization efficiency with poly(lactide) DOI Creative Commons
Jaume Gomez‐Caturla, Juan Ivorra Martínez, Ramon Tejada‐Oliveros

и другие.

Polymer, Год журнала: 2023, Номер 290, С. 126522 - 126522

Опубликована: Ноя. 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.

Язык: Английский

Процитировано

11
An innovative functional compatibility strategy for poly (lactic acid) and polypropylene carbonate blends to achieve superior toughness, degradability, and optical properties DOI

Ying Jing,

Weihan Chi,

Wei Zhang

и другие.

International Journal of Biological Macromolecules, Год журнала: 2024, Номер unknown, С. 135702 - 135702

Опубликована: Сен. 1, 2024

Язык: Английский

Процитировано

4
Mechanistic Insights Into the Role of a Dual Compatibilization Strategy in Improving Mechanical Properties of PLA/TPO(NV) Blends DOI Open Access
Yongchao Li, Ying Qiu, Wei Lan

и другие.

Journal of Polymer Science, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

ABSTRACT A toughened modification of polylactic acid (PLA) was carried out using a self‐made polyolefin elastomer (TPO(NV)) as toughening agent. In order to enhance the mechanical properties and compatibility PLA with TPO(NV), TPOGS (TPO grafted glycidyl methacrylate (GMA) styrene (St) co‐grafting monomer) graft copolymer prepared by melt grafting used compatibilizer, in combination small‐molecule additive dibutyl itaconate (DBI). PLA/TPOGS/DBI blends varying DBI contents were prepared, synergistic compatibilization effects on PLA/TPO investigated. The impact content compatibility, crystallization behavior, rheological properties, microstructure PLA/TPOGS also results confirmed that GMA successfully onto TPO elastomer, improved. Furthermore, found react main chains or TPO(NV) through double bonds, forming chemical links acting “bridge,” which, synergy copolymer, further enhanced between TPO(NV). As increased, glass transition temperature ( T g ) difference significantly decreased from 95.06°C (DBI = 2.5 wt%) 82.53°C 12.5 wt%). Due plasticizing effect DBI, flow index PLA/TPO(NV) gradually increased content. addition did not affect process during cooling PP‐α crystalline phase, degree crystallinity remained relatively constant, maintained around 104°C. had stronger influence component within blends, higher led significant shift cold 122.54°C 115.05°C. This indicates primarily impacts phase blend. initially but later continued increase. At 10 wt%, notched strength elongation at break reached their highest values, 1.3 times 7 higher, respectively, than those blend without DBI.

Язык: Английский

Процитировано

0
Terpenes: Nature’s Plasticizers for Sustainable Biopolymer Enhancement DOI
Jaume Gomez‐Caturla, Juan Ivorra Martínez, Luís Quiles-Carrillo

и другие.

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Tuned flexibility with phenethyl esters plasticized polylactic acid DOI Creative Commons
Jose Javier Gazquez-Navarro, Juan Ivorra Martínez, Jaume Gomez‐Caturla

и другие.

Materials Today Communications, Год журнала: 2025, Номер unknown, С. 112437 - 112437

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Multimaterial PLA with tailored plasticization using fused deposition modeling for improved flexibility and shape memory recovery DOI Creative Commons
Carlos Lazaro‐Hdez, Ana Pilar Valerga Puerta, Lourdes Sánchez‐Nácher

и другие.

Rapid Prototyping Journal, Год журнала: 2025, Номер 31(11), С. 231 - 246

Опубликована: Апрель 30, 2025

Purpose The purpose of this study is to develop and characterize high-performance, biodegradable polylactic acid (PLA)-based materials for advanced applications that demand increased flexibility shape memory capabilities. By introducing triethyl citrate (TEC) as a plasticizer leveraging multimaterial three-dimensional printing configurations, research aimed mitigate PLA’s inherent brittleness expand its functional range. Additionally, work sought optimize design parameters – such infill orientation core-shell distribution maximize mechanical strength, fracture toughness recovery. Ultimately, aspired broaden applicability in fields like biomedical devices, packaging engineered components. Design/methodology/approach This used fused deposition modeling fabricate single-material (core-shell) samples using PLA blended with TEC at varying concentrations (0–20 Wt%). Filaments were first compounded then extruded into 1.75 mm diameter feedstocks. Mechanical properties evaluated through tensile, flexural impact tests, while behavior was quantified by bending-deformation recovery experiments heated water. Morphological analyses examined void formation surfaces via field emission scanning electron microscopy. Thermal transitions melt flow indices also characterized elucidate the influence content. Findings results demonstrated adding 20 Wt% significantly enhanced elongation break up 174% compared neat an close 2%. Plasticizer lowered glass transition temperature from 62°C around 30°C. Shape rate above 80% configurations obtained, exhibited rates 60%. Multimaterial featuring soft cores rigid shells balanced stiffness, superior energy absorption more efficient than homogeneous counterparts. Improved facilitated better layer adhesion, reducing voids increasing overall part integrity. These findings underline potential combining plasticized careful material additive manufacturing applications. Originality/value provides novel demonstration how tailored plasticization can collectively utility PLA, bridging gap between traditional rigidity flexible, memory-enabled structures. systematically studying both specimens, offers key insights harnessing polymer chain mobility preserving strength. In contrast prior efforts focusing on either or complex geometries alone, integrated approach presents versatile strategy be applied wide spectrum engineering solutions.

Язык: Английский

Процитировано

0