Effect of filler type on properties of PBAT/organoclay nanocomposites

Santos, Tiago T.; Almeida, Tatiara G.; Morais, Dayanne Diniz Souza; Magalhães, Fernão D.; Guedes, Rui Miranda; Canedo, Eduardo L.; Carvalho, Laura H.

doi:10.1007/s00289-019-02778-z

Cited by 18 publications

(8 citation statements)

References 26 publications

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“…Regardless of the BC concentration, Table 1 highlights that the addition of the filler involved a minimum decrease in the percentage crystallinity compared to pure PBAT, although a slight increase in Tm from 129.5 Therefore, the DSC results revealed that BC did not substantially influence PBAT structure, which remained almost amorphous despite the filler addition. This result was expected since PBAT is a random copolymer characterized by low crystallinity due to its intrinsic irregularity in structure, which inhibits high crystallinity [47]. However, the slight increase in Tm confirmed that BC and PBAT were compatible to some extent, as reported in previous researches [48].…”

Section: Preliminary Investigationsupporting

confidence: 80%

Use of Biochar as Filler for Biocomposite Blown Films: Structure-Processing-Properties Relationships

et al. 2021

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In this work, biocomposite blown films based on poly(butylene adipate-co-terephthalate) (PBAT) as biopolymeric matrix and biochar (BC) as filler were successfully fabricated. The materials were subjected to a film-blowing process after being compounded in a twin-screw extruder. The preliminary investigations conducted on melt-mixed PBAT/BC composites allowed PBAT/BC 5% and PBAT/BC 10% to be identified as the most appropriate formulations to be processed via film blowing. The blown films exhibited mechanical performances adequate for possible application as film for packaging, agricultural, and compost bags. The addition of BC led to an improvement of the elastic modulus, still maintaining high values of deformation. Water contact angle measurements revealed an increase in the hydrophobic behavior of the biocomposite films compared to PBAT. Additionally, accelerated degradative tests monitored by tensile tests and spectroscopic analysis revealed that the filler induced a photo-oxidative resistance on PBAT by delaying the degradation phenomena.

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Section: Preliminary Investigationsupporting

confidence: 80%

Use of Biochar as Filler for Biocomposite Blown Films: Structure-Processing-Properties Relationships

et al. 2021

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“…These excellent properties render PBAT a promising eco-friendly biopolymer for use as an alternative to nonbiodegradable petroleum-based polymers for a wide variety of potential applications such as food-packaging containers, waste vinyl bags, shopping bags, and mulching films. − Although PBAT shows promise as a biodegradable biopolymer, its relatively high water-vapor permeability and high production cost compared with commonly used polymers may restrict its use in some commercial applications. In recent years, numerous studies have aimed at improving the applicability of PBAT by creating blends with other polymers − and by producing composites with various reinforcements such as CaCO 3 and starch, carbon nanotubes, organoclay, − cellulose nanocrystals, zinc oxide, and natural fibers. , …”

Section: Introductionmentioning

confidence: 99%

Construction and Characterization of Biodegradable Foam from High-Content Lignin-Reinforced Poly(Butylene Adipate-co-Terephthalate) Biocomposites

Hong

Hwang

2022

ACS Appl. Polym. Mater.

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High-content lignin-reinforced poly(butylene adipateco-terephthalate) (PBAT) biocomposites were successfully constructed by the incorporation of lignin particles into a biodegradable PBAT matrix. The effect of lignin content with and without a chain extender (CE) on the thermal and mechanical properties of the biocomposites was investigated. Although the mechanical properties for all biocomposites showed similar decreases with little influence from the addition of CE, the crystallization temperature increased because of the branching points of the PBAT polymer chain, which serve as heterogeneous nucleating sites for crystallization, and the nucleating effect of the lignin particle. The foamability of the lignin-reinforced PBAT biocomposites, which comprised a chemical blowing agent, azodicarbonamide, and a cross-linking agent, dicumyl peroxide, was studied. Was also studied the process in the presence of azodicarbonamide (chemical blowing agent) and dicumyl peroxide (cross-linking agent). When lignin was added to the PBAT biocomposites at a content of less than 20 wt %, a typical foam structure was detected. After the addition of CE, the lignin-reinforced PBAT biocomposites exhibited a cellular structure for lignin contents below 50 wt %. However, the foam quality of the ligninreinforced PBAT biocomposites with CE was uniform for lignin contents up to 30 wt %. This high-content lignin-reinforced PBAT biocomposite with a CE should provide cost-effective and sustainable biodegradable foam that can be used for cushioning packaging applications.

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“…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). The data therefore indicate that the compounds under study have efficient barrier properties for possible applications in food packaging and protective coatings, among other applications.…”

Section: Permeabilitymentioning

confidence: 91%

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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Effect of filler type on properties of PBAT/organoclay nanocomposites

Cited by 18 publications

References 26 publications

Use of Biochar as Filler for Biocomposite Blown Films: Structure-Processing-Properties Relationships

Use of Biochar as Filler for Biocomposite Blown Films: Structure-Processing-Properties Relationships

Construction and Characterization of Biodegradable Foam from High-Content Lignin-Reinforced Poly(Butylene Adipate-co-Terephthalate) Biocomposites

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

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