Effect of an organoclay on the photochemical transformations of a PBAT/PLA blend and morpho-chemical features of crosslinked networks

Scaffaro, Roberto; Gammino, Michele; Mantia, Francesco Paolo La

doi:10.1016/j.polymdegradstab.2021.109549

Cited by 28 publications

(15 citation statements)

References 43 publications

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“…This result can lead to beneficial effects because it could favor the interaction with water and bacteria and thus increase the overall material degradability, both from a chemical and biological standpoint. In fact, it is well-known that some polyesters, while being fully degradable, often experience extremely slow degradation kinetics because of their hydrophobicity, which hinders water diffusion into the bulk [ 2 , 31 ]. The actual biodegradation kinetics and performance would deserve further investigation and will be the object of a future work.…”

Section: Resultsmentioning

confidence: 99%

Green Composites Based on PLA and Agricultural or Marine Waste Prepared by FDM

Scaffaro

Gulino

et al. 2021

Polymers

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Three dimensional-printability of green composites is recently growing in importance and interest, especially in the view of feasibility to valorize agricultural and marine waste to attain green fillers capable of reducing bioplastic costs, without compromising their processability and performance from an environmental and mechanical standpoint. In this work, two lignocellulosic fillers, obtained from Opuntia ficus indica and Posidonia oceanica, were added to PLA and processed by FDM. Among the 3D printed biocomposites investigated, slight differences could be found in terms of PLA molecular weight and filler aspect ratio. It was shown that it is possible to replace up to 20% of bioplastic with low cost and ecofriendly natural fillers, without significantly modifying the processability and the mechanical performance of the neat matrix; at the same time, an increase of surface hydrophilicity was found, with possible positive influence on the biodegradability of such materials after disposal.

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Section: Resultsmentioning

confidence: 99%

Green Composites Based on PLA and Agricultural or Marine Waste Prepared by FDM

Scaffaro

Gulino

et al. 2021

Polymers

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“…of PBAT. At present, the modification of PBAT has been studied by adding a small amount of organic clay into the polymer, [1][2][3] and the performance of this composite material has been significantly improved in various aspects, but the improvement of the performance is very much related to the organic clay and its dispersion in the PBAT matrix, that is, it is related to the method of preparation, therefore, the organization of clay and the choice of the method of preparation have become a hot spot in the research on the modification of PBAT. [4][5][6][7] Vermiculite (VMT) is a common layered silicate mineral with many advantages, such as stable properties, frost resistance, antibacterial, non-toxic, low price, and abundant resources.…”

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confidence: 99%

Preparation and properties of vermiculite modified by triphenylbutylphosphonium bromide and PBAT composite film

Pei,

Shang,

et al. 2023

Polymer Composites

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In this study, quaternary phosphonium salt (P4) was prepared, vermiculite (VMT) was modified by P4, and P4@VMT/poly (butylene adipate‐co‐terephthalate) (PBAT) composite film was prepared by the solution method. The structure of the synthesized P4 was determined by nuclear magnetic resonance and infrared. The structure and performance of P4 modified vermiculite were explored and analyzed by particle size, XRD, infrared and micro‐morphology. The structure, thermal properties, crystallization properties, rheological properties, cross‐section morphology, tensile properties and antibacterial properties of pure PBAT film and P4@VMT/PBAT composite film were tested and compared. The results show that the crystallization temperature and melting temperature of P4@VMT/PBAT composite film are higher than those of pure PBAT film. With the increase in P4@VMT content, the thermal stability of the composite film becomes worse, and the crystallization enthalpy, melting enthalpy and crystallinity also decrease, while the storage modulus, loss modulus and complex viscosity of P4@VMT/PBAT composite film increase significantly. In addition, compared with pure PBAT film, the tensile strength of P4@VMT/PBAT‐20% composites decreased by 12.0% and the elongation at break decreased by 95.7%.Highlights Successful synthesis of phosphonium quaternary P4 and modification of vermiculite. The properties of P4@VMT/PBAT composite films with different contents were studied.

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“…Typical PLA transmittance bands can be observed between 3500 and 3000 cm −1 (hydroxyl stretching) and between 3000 and 2850 cm −1 (CH 3 stretching). Bands between 2170 and 2100 cm −1 can be assigned to carboxyl O─H stretching 14,47 from PLA, whereas C─O bonds could be related to the transmittance band at 1750 cm −1 46,48 . The transmittance between 1300 and 1015 cm −1 can be attributed to PLA ester groups vibrations, 14,49 and at 700 cm −1 to methylene groups vibrations, which comprise a region close to PBAT (at 725 cm −1 ) 48 …”

Section: Resultsmentioning

confidence: 99%

PBAT/PLA/cellulose nanocrystals biocomposites compatibilized with polyethylene grafted maleic anhydride (PE‐g‐MA)

Nunes

Ribeiro

Martini

et al. 2021

J of Applied Polymer Sci

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The use of biodegradable polymers has grown exponentially due to their lower environmental impact when compared to conventional polymers. In this sense, biocomposites are an alternative due to their promising properties, maintaining biodegradability. For this purpose, in the present study, a biodegradable biocomposite of PBAT (poly [butylene adipate co‐terephthalate]) and PLA (polylactide) blend containing cellulose nanocrystals (CNC) were obtained, using polyethylene grafted with maleic anhydride (PE‐g‐MA) as a coupling agent. Seven formulations were produced by extrusion and had their structure, morphology, thermal, and rheological properties analyzed. The results showed a significant improvement of adhesion among the components using PE‐g‐MA as a coupling agent. Moreover, CNC and PE‐g‐MA increased the PLA crystallinity degree and reduced the complex viscosity. These results are unprecedented in the literature using these compositions and extrusion processing conditions. Therefore, these new insights provide a vast horizon for the use of biodegradable mixtures using PBAT/PLA and CNC.

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Effect of an organoclay on the photochemical transformations of a PBAT/PLA blend and morpho-chemical features of crosslinked networks

Cited by 28 publications

References 43 publications

Green Composites Based on PLA and Agricultural or Marine Waste Prepared by FDM

Green Composites Based on PLA and Agricultural or Marine Waste Prepared by FDM

Preparation and properties of vermiculite modified by triphenylbutylphosphonium bromide and PBAT composite film

PBAT/PLA/cellulose nanocrystals biocomposites compatibilized with polyethylene grafted maleic anhydride (PE‐g‐MA)

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