Biobased PLA/sugarcane bagasse fiber composites: Effect of fiber characteristics and interfacial adhesion on properties

Bartos, András; Nagy, Krisztina; Anggono, Juliana; Antoni, Antoni; Purwaningsih, Hariyati; Móczó, János; Pukánszky, Béla

doi:10.1016/j.compositesa.2021.106273

Cited by 40 publications

(16 citation statements)

References 41 publications

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“…Wang et al [ 21 ] evaluated the effect of sugarcane bagasse on PLA biocomposite properties. The tensile and flexural properties of PLA decreased with the addition of sugarcane bagasse, even with coupling agents, which was similar to the results reported by Bartos et al [ 25 ]. Da Silva Pinto et al [ 26 ] incorporated sugarcane fibers to PHB and reported a decreased brittleness.…”

Section: Introductionsupporting

confidence: 90%

Valorization of Sugarcane Straw for the Development of Sustainable Biopolymer-Based Composites

et al. 2021

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Sugarcane straw (SCS) is a common agro-industrial waste that is usually incinerated or discarded in fields after harvesting, increasing the importance of developing added-value applications for this residue. In this study, sustainable biocomposites were produced, and the effect of sugarcane straw as a filler/reinforcement of commercial biopolymers was evaluated. Biocomposites were prepared using polylactic acid (PLA), polyhydroxybutyrate (PHB), polyhydroxybutyrate-co-hydroxyvalerate (PHBV), or green polyethylene (Green-PE) with different fiber contents (20, 30, and 40 wt.%). Dry-blending followed by compression molding was used for the biocomposites preparation. The results showed that PLA, PHB, and PHBV biocomposites retained the same impact strength as the neat matrices, even with 40 wt.% of sugarcane straw. The flexural and tensile modulus of PLA, PHB, and PHBV biocomposites increased with 20% of SCS, whereas, in Green-PE biocomposites, these properties increased at all fiber contents. Since any compatibilizer was used, both the flexural and tensile strength decreased with the addition of SCS. However, even with the highest content of SCS, the tensile and flexural strength values were around 20 MPa, making these materials competitive for specific industrial applications.

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Section: Introductionsupporting

confidence: 90%

Valorization of Sugarcane Straw for the Development of Sustainable Biopolymer-Based Composites

et al. 2021

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“…SEM, scanning electron microscopy material above the melting temperature of the PP. As studied by Bartos, [19] irrespectively of the polymer matrix, the process of debonding in the interface consumes little energy, unlike matrix yielding and fiber rupture. This process of debonding can be seen in Figure 1(A)-(C), which correlates to some mechanical properties.…”

Section: Morphological Analysismentioning

confidence: 98%

“…Considering the observations made on the SEM images, it is possible that on the 50% and 60% wt fibers formulations, plastic deformation of the polymeric phase is an important fracture mode, as well as fiber debonding and fiber fracture. [19] In the 70% and 80% wt composites there is no evidence of continuous polymeric phase, which withdraws the matrix deformation and fiber-polymer interface separation as crack inhibition mechanisms, reducing the energy absorbed during fracture by the composite and, consequently, it is IS. [33,37,38] Aside from the fiber content effect, an inversely proportional relationship between IS and the degree of crystallinity of PP is observed.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…Several studies were and are investigating the use of SCB fibers in polymeric materials but in low contents. [17][18][19][20][21] For instance, Wirawan et al made several works on poly(vinyl chloride) containg sugarcane bagasse fibers (from pith and rind) (PVC/SCB) composites, reaching up to 50% wt fibers and achieving improvement on some mechanical properties. [22,23] The field of composites with high contents of lignocellulosic fibers, especially SCB fibers, still needs sources, yet the existing works are noteworthy.…”

Section: Introductionmentioning

confidence: 99%

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Sugarcane bagasse fibers at high contents in thermoplastic composites: A novel approach using agro‐industrial residue via thermokinetic mixing

Lazarini

Marconcini

2021

Polymer Composites

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Agro-industrial residue from sugarcane cultivation in Brazil generates more than 200 million tons of bagasse per year, which is rich in plant fibers that can be potentially applied in polymer composites. New processing routes are required to process composites with fiber contents above 50% wt. The objective of this work was to incorporate sugarcane bagasse fibers to polypropylene at high contents (50%-80% wt) in the development of composites via thermokinetic mixture. Composites with 50% and 60% fibers showed a traditional composite morphology, while those with 70% and 80% resembled agglomerated composites. The water absorption varied between 5% and 34%, increasing with fiber content, while the bulk density remained relatively constant, close to 1 g/cm 3 . The flexural strength and the flexural modulus reached 31 MPa and 2.4 GPa, respectively, tending to decrease with fiber content. In summary, the present work showed the viability of the proposed processing route, with only two starting materials, to produce cheap, relatively lightweight composites with mechanical properties close to and water absorption much lower than wood composites (medium-density fiberboard and medium-density particleboard) used in similar applications, such as furniture, construction, and automobile industry.

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“…In the case of the composite materials of n-HA and PLA, due to the large difference in hydrophilicity/hydrophobicity between n-HA particles and PLA, prestine n-HA can hardly be dispersed uniformly in the PLA matrix, which makes it difficult to achieve nano-reinforcement [24,25]. In fact, the agglomeration of n-HA in the PLA matrix may pose a detrimental effect on the mechanical properties of the PLA/HA nanocomposite [26].…”

Section: Introductionmentioning

confidence: 99%

Stereocomplexation Reinforced High Strength Poly(L-lactide)/Nanohydroxyapatite Composites for Potential Bone Repair Applications

Guo

Zhao

et al. 2022

Polymers

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Composite materials composed of polylactide (PLA) and nano-hydroxyapatite (n-HA) have been recognized as excellent candidate material in bone repai The difference in hydrophilicity/hydrophobicity and poor interfacial compatibility between n-HA filler and PLA matrix leads to non-uniform dispersion of n-HA in PLA matrix and consequent poor reinforcement effect. In this study, an HA/PLA nanocomposite was designed based on the surface modification of n-HA with poly(D-lactide) (PDLA), which not only can improve the dispersion of n-HA in the poly(L-lactide) (PLLA) matrix but also could form a stereocomplex crystal with the matrix PLLA at the interface and ultimately lead to greatly enhanced mechanical performance The n-HA/PLA composites were characterized by means of scanning electron microscopy, Fourier transform infrared spectroscopy, X-Ray diffraction, thermal gravity analysis, differential scanning calorimetry, and a mechanical test; in vitro cytotoxicity of the composite material as well as its efficacy in inducing osteogenic differentiation of rat bone marrow stromal cells (rMSCs) were also evaluated. Compared with those of neat PLLA, the tensile strength, Young’s modulus, interfacial shear strength, elongation at break and crystallinity of the composites increased by 34%, 53%, 26%, 70%, and 17%, respectively. The adhesion and proliferation as well as the osteogenic differentiation of rMSCs on HA/PLA composites were clearly evidenced. Therefore, the HA/PLA composites have great potential for bone repai

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Biobased PLA/sugarcane bagasse fiber composites: Effect of fiber characteristics and interfacial adhesion on properties

Cited by 40 publications

References 41 publications

Valorization of Sugarcane Straw for the Development of Sustainable Biopolymer-Based Composites

Valorization of Sugarcane Straw for the Development of Sustainable Biopolymer-Based Composites

Sugarcane bagasse fibers at high contents in thermoplastic composites: A novel approach using agro‐industrial residue via thermokinetic mixing

Stereocomplexation Reinforced High Strength Poly(L-lactide)/Nanohydroxyapatite Composites for Potential Bone Repair Applications

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