Non-isothermal cold crystallization, melting, and moisture barrier properties of silver-loaded kaolinite filled poly(lactic acid) films

Girdthep, Sutinee; Limwanich, Wanich; Punyodom, Winita

doi:10.1016/j.matchemphys.2021.125227

Cited by 11 publications

(4 citation statements)

References 44 publications

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“…The morphology of the PLA–talc crystals exhibits an epitaxial growth into a lamellar structure. Other mineral-based materials, such as mica [ 85 ], kaolinite [ 86 , 87 ], layered double hydroxides (LDHs) [ 88 , 89 , 90 , 91 ], and vermiculite (VMT) [ 92 , 93 , 94 ], can also serve as nucleating agents for PLA and affect the nucleation density and crystallization rates.…”

Section: Materials Innovations In Plamentioning

confidence: 99%

The Effects of Nucleating Agents and Processing on the Crystallization and Mechanical Properties of Polylactic Acid: A Review

Gao,

Masato

2024

Micromachines

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Polylactic acid (PLA) is a biobased, biodegradable, non-toxic polymer widely considered for replacing traditional petroleum-based polymer materials. Being a semi-crystalline material, PLA has great potential in many fields, such as medical implants, drug delivery systems, etc. However, the slow crystallization rate of PLA limited the application and efficient fabrication of highly crystallized PLA products. This review paper investigated and summarized the influence of formulation, compounding, and processing on PLA’s crystallization behaviors and mechanical performances. The paper reviewed the literature from different studies regarding the impact of these factors on critical crystallization parameters, such as the degree of crystallinity, crystallization rate, crystalline morphology, and mechanical properties, such as tensile strength, modulus, elongation, and impact resistance. Understanding the impact of the factors on crystallization and mechanical properties is critical for PLA processing technology innovations to meet the requirements of various applications of PLA.

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Section: Materials Innovations In Plamentioning

confidence: 99%

The Effects of Nucleating Agents and Processing on the Crystallization and Mechanical Properties of Polylactic Acid: A Review

Gao,

Masato

2024

Micromachines

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“…However, the insufficient mechanical strength and barrier properties of PBAT limit the applications in mulch film or food packaging bags . Therefore, biodegradable polymers or inorganic fillers with specific stiffness, such as poly(lactic acid) (PLA) , and poly(glycolic acid) (PGA), , were often introduced via melt-blending to improve the stiffness and barrier properties of PBAT . Zhou’s group had already reported the PBAT/PEF blends with 1–50 wt % PEF contents by the extrusion injection molding process.…”

Section: Introductionmentioning

confidence: 99%

Incorporation of Poly(ethylene 2,5-furanoate) into Poly(butylene adipate-co-terephthalate) toward Sustainable Food Packaging Films with Enhanced Strength and Barrier Properties

Wang

Wei

et al. 2023

ACS Sustainable Chem. Eng.

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The development of environment-friendly biodegradable materials has aroused widespread attention and interest. Herein, kilogram-scale poly(ethylene 2,5-furanoate) (PEF) was synthesized and incorporated into poly(butylene adipate-coterephthalate) (PBAT) via melt-compounding. Then, the PBAT/ PEF blend films were prepared by the extrusion blowing method. The results showed that PEF could greatly improve the tensile performance and tear resistance of PBAT/PEF blend films. The superior mechanical properties were achieved in PBAT/PEF10 blend films with a tensile strength of 44.3 ± 2.9 MPa and an elongation at break of 900.5 ± 21.9%. Besides, the transmittance of oxygen (O 2 ), carbon dioxide (CO 2 ), and water vapor sharply reduced by 78.8, 74, and 48.3% in comparison with those of a pure PBAT film, respectively. The inherent barrier characteristic of PEF and the enhanced bonding between PBAT and PEF contributed to the excellent gas and water vapor barrier performance. Furthermore, PBAT/PEF blend films were used for the fruit preservation tests. After a 15 day preservation, the freshness of fruits covered with PBAT/PEF films was well kept, showing great potentialin food packing applications.

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“…Isoconversional methods have advantages over the conventional ones, as they provide precise kinetic information about the involved processes, in addition to providing important parameters, such as the relationship between the degree of crystallinity with time and temperature, activation energy, crystallization rate, enabling the evaluation between theoretical and experimental deviations which are indicative of the applied models predictive power. 22,23 Literature has reported the crystallization kinetics of PLA/PBAT with a third constituent, such as PLA/PBAT/ silver loaded kaolinite 24 ; PLA/PBAT/titanate-treated calcium carbonate 25 ; PLA/PBAT/Talc. 26 However, from our knowledge, there is lack on the PBAT/PLA/Lignin and its crystallization kinetics which it can be of great importance since lignin addition to PBAT/PLA may provide potential biodegradable materials with bactericidal, antioxidant, UV barrier properties and better mechanical properties, hence, deep understanding of the crystallization kinetics can be used as proper tools for the rational control to reach the best relationship among processing, structure and properties.…”

Section: Introductionmentioning

confidence: 99%

“…Literature has reported the crystallization kinetics of PLA/PBAT with a third constituent, such as PLA/PBAT/silver loaded kaolinite 24 ; PLA/PBAT/titanate‐treated calcium carbonate 25 ; PLA/PBAT/Talc 26 . However, from our knowledge, there is lack on the PBAT/PLA/Lignin and its crystallization kinetics which it can be of great importance since lignin addition to PBAT/PLA may provide potential biodegradable materials with bactericidal, antioxidant, UV barrier properties and better mechanical properties, hence, deep understanding of the crystallization kinetics can be used as proper tools for the rational control to reach the best relationship among processing, structure and properties.…”

Section: Introductionmentioning

confidence: 99%

Enhanced miscibility of PBAT/PLA/lignin upon γ‐irradiation and effects on the non‐isothermal crystallization

Barros

Soares

Moura

et al. 2022

J of Applied Polymer Sci

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Lignin is natural and renewable polymer, the second most abundant on Earth. Properly used it can reduce synthetic and oil based materials in addition to contributing to the biodegradable systems. In this work, the kraft lignin was subjected to gamma radiation at absorbed doses of 30, 60, and 90 KGy in order to increase the interaction with “Poly(butylene adipate‐co‐terephthalate) (PBAT)/Poly(lactic acid) (PLA)” blend (Ecovio®). PBAT/PLA/lignin blends with 10% of the weight of lignin were produced by extrusion using twin‐screw extruder and characterized by Fourier transform infrared spectroscopy (FTIR), Differential scanning calorimetry (DSC), and Field emission scanning electron microscopy (FE‐SEM). FTIR spectra showed partial miscibility between PBAT/PLA and lignin, most due to the hydrogen bond between PBAT/PLA carbonyl and lignin hydroxyl, being intensified in irradiated lignin compounds. As evidenced on DSC scans, in PBAT/PLA/irradiated lignin the crystallization peak was shifted to lower temperatures and the crystallization rate decreased. Crystallization kinetics was modeled using Pseudo Avrami, and isoconversional models of Friedman and Vyazovkin. Pseudo‐Avrami displayed linearity deviation at beginning and crystallization ending due to the nucleation and secondary crystallization, while from Friedman and Vyazovkin the activation energy (Ea) was higher for PBAT/PLA/irradiated lignin 30 KGy, characterizing crystallization with higher energy consumption. FE‐SEM images showed better dispersion and miscibility in PBAT/PLA/irradiated lignin. The results indicate that the irradiation of Kraft lignin promotes miscibility and compatibility of PBAT/PLA/lignin.

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Non-isothermal cold crystallization, melting, and moisture barrier properties of silver-loaded kaolinite filled poly(lactic acid) films

Cited by 11 publications

References 44 publications

The Effects of Nucleating Agents and Processing on the Crystallization and Mechanical Properties of Polylactic Acid: A Review

The Effects of Nucleating Agents and Processing on the Crystallization and Mechanical Properties of Polylactic Acid: A Review

Incorporation of Poly(ethylene 2,5-furanoate) into Poly(butylene adipate-co-terephthalate) toward Sustainable Food Packaging Films with Enhanced Strength and Barrier Properties

Enhanced miscibility of PBAT/PLA/lignin upon γ‐irradiation and effects on the non‐isothermal crystallization

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