Effect of composition on permeability, mechanical properties and biodegradation of PBAT/PCL blends films

Sousa, Fernanda M.; Cavalcanti, Felipe B.; Marinho, Vithória A. D.; Morais, Dayanne Diniz Souza; Almeida, Tatiara G.; Carvalho, Laura H.

doi:10.1007/s00289-021-03745-3

Cited by 15 publications

(8 citation statements)

References 18 publications

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“…Films for food packaging applications require, in addition to low crystallinity and low oxygen and carbon dioxide permeability, reasonable mechanical properties. PCL is well known for its excellent properties (high flexibility, impact and tearing resistance) (Reul et al, 2018;Sousa et al;Silva et al, 2022). Organoclay composites are reported to improve and preserve these characteristics (Santos et al, 2019;Almeida et al, 2017;Falcão et al, 2019).…”

Section: Permeabilitymentioning

confidence: 99%

Effect of organoclay and corn straw on the properties of polycaprolactone composite films

Falcão

Almeida

Sousa

et al. 2022

RSD

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The packaging industry requires materials capable of offering barriers to the entry of microorganisms, with the ability to protect and maintain the characteristics of the packaging content. The use of fillers can enhance these barrier properties to the polymeric material. This work investigates the effect of incorporating different fillers (organophilic clay and corn straw) on the rheological, thermal, mechanical and permeability characteristics of polycaprolactone (PCL) processed in an internal laboratory mixer. The results of torque rheometry suggest polymer matrix degradation during processing did not increase, nor the thermal stability of the matrix. Composite films showed higher tensile strength, higher stiffness and lower elongation. Incorporation of the fillers in the PCL matrix reduced the permeability to oxygen and carbon dioxide gases of the produced films. Adding up to 1% of organoclay C20A or corn straw to PCL leads to a material that combines maintenance or improvement of properties combined with lower permeability to oxygen and carbon dioxide, which confirms the potential use of these systems in packaging industry.

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Section: Permeabilitymentioning

confidence: 99%

Effect of organoclay and corn straw on the properties of polycaprolactone composite films

Falcão

Almeida

Sousa

et al. 2022

RSD

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“…One of these nanocomposite systems is the blend of Poly (ε-caprolactone) (PCL) and polybutylene adipate terephthalate (PBAT) with hydroxyapatite (HA) nanoparticles. PCL and PBAT are biodegradable polymers with excellent mechanical properties and biocompatibility, making them ideal candidates for biomedical applications [12][13][14]. HA, an inorganic material, is commonly utilized in bone tissue engineering owing to its resemblance to the mineral component of bone.…”

Section: Introductionmentioning

confidence: 99%

“…One common morphology observed at intermediate blend ratios in PCL/PBAT blends is a co-continuous structure, where the PCL and PBAT phases interpenetrate each other and form a continuous network throughout the blend. A phase-separated structure is another morphology that can be seen at high ratios of PCL/PBAT blend when the PCL and PBAT phases separate into distinct domains or droplets within the blend [12,14]. Furthermore, the thermal stability of a PCL/PBAT blend can be an important consideration for its use in various applications.…”

Section: Introductionmentioning

confidence: 99%

Poly (ε‐caprolactone)/polybutylene adipate terephthalate/hydroxyapatite blend nanocomposites: Morphology-thermal degradation kinetics relationship

Bolourian,

Khasraghi,

Zarei

et al. 2024

Preprint

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Polycaprolactone/polybutylene adipate terephthalate blends (PCL/PBAT) (90/10, 75/25, and 50/50 wt/wt) containing 1, 3, and 5 phr hydroxyapatite (HA) nanoparticles were prepared using solvent casting technique. Scanning electron microscopic studies confirmed a homogeneous morphology for the blends and nanocomposites. Some agglomeration can be recognized using Energy dispersive spectroscopy (EDS) mapping in the blends containing 5 phr HA. The DSC results confirmed the presence of nanoparticles in each phase, particularly in the crystalline region, as well wetting coefficient confirmed the localization of nanoparticles at the interface. Thermal stability and degradation kinetics were analyzed using thermogravimetric analysis (TGA). Based on the TGA results, a multi-step degradation process resulted in the blends and blend nanocomposites and the PCL/PBAT blends showed better thermal stability and exhibited higher Tmax and residual mass. PCL/PBAT blends were more stable at higher temperatures compared to PCL and PBAT. Various kinetics evaluation techniques, including Friedman, Flynn-Ozawa-Wall, and Kissinger-Akahira-Sunose methods, were utilized to determine the activation energy of degradation. PCL/PBAT blends were more difficult to thermally degrade and showed the highest degradation activation energy. Incorporating HA led to lower thermal stability and, therefore, lower degradation activation energy. Incorporation of only 5 phr of HA resulted in greater thermal stability at higher temperatures (T90%).

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“…Among them, PBAT is a petro-based polyester with the greatest output, which exhibits extremely high toughness. − Nevertheless, its rigidity is very low, which limits its applications in many fields . To expand the application scope of PBAT, the simplest and most effective way is to mix it with rigid materials, such as microcrystalline cellulose, modified lignin, nanofillers, and some polyesters with high elastic moduli. − …”

Section: Introductionmentioning

confidence: 99%

Mechanical, Barrier, and Biodegradable Properties of Poly(butylene adipate-co-terephthalate)/Polyglycolic Acid Blends Prepared by Reactive Extrusion

Dong

Yang

et al. 2022

ACS Appl. Eng. Mater.

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Poly(butylene adipate-co-terephthalate) (PBAT) is a biodegradable polyester with excellent flexibility, while the low rigidity and gas barrier performance limits its further applications. In this work, a series of PBAT/polyglycolic acid (PGA) blends with and without reactive compatibilizers (ESO and ADR) were prepared by a twin-screw extruder. The thermal, rheological, morphological, mechanical, gas barrier, and biodegradable properties of the PBAT/PGA blends were studied in detail. It was found that the PBAT/PGA30 blend showed a noticeably worse tensile strength and breaking elongation compared to those of neat PBAT due to the poor miscibility between the two components. Compared with neat PBAT and the PBAT/PGA30 blend, the PBAT/PGA30/ESO/ADR blend exhibited a better stiffness−ductility balance with a tensile strength of 19.8 MPa, an elastic modulus of 529 MPa, and an elongation at break of 146%, which could be ascribed to the improvement of the compatibility between PBAT and PGA in the presence of ESO and ADR, reflecting the smaller size of the PGA phase dispersed in a PBAT matrix as observed by scanning electron microscopy. In addition, the gas barrier properties and biodegradability of the PBAT/PGA30/ESO/ ADR blend were much better than those of neat PBAT, and they were further improved with an increase in PGA content. This work provides an effective method for the reinforcement of PBAT and opens up the possibility for its large-scale application in food packaging.

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Effect of composition on permeability, mechanical properties and biodegradation of PBAT/PCL blends films

Cited by 15 publications

References 18 publications

Effect of organoclay and corn straw on the properties of polycaprolactone composite films

Effect of organoclay and corn straw on the properties of polycaprolactone composite films

Poly (ε‐caprolactone)/polybutylene adipate terephthalate/hydroxyapatite blend nanocomposites: Morphology-thermal degradation kinetics relationship

Mechanical, Barrier, and Biodegradable Properties of Poly(butylene adipate-co-terephthalate)/Polyglycolic Acid Blends Prepared by Reactive Extrusion

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