Green synthesis of novel biocomposites from treated cellulosic fibers and recycled bio-plastic polylactic acid

Laadila, Mohamed Amine; Hegde, Krishnamoorthy; Rouissi, Tarek; Brar, Satinder Kaur; Galvez‐Cloutier, Rosa; Sorelli, Luca; Cheikh, Ridha Ben; Paiva, Maria C.; Abokitse, Kofi

doi:10.1016/j.jclepro.2017.06.235

Cited by 66 publications

(19 citation statements)

References 48 publications

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“…Functionalized cellulose nanocrystals increase the thermal stability, tensile strength, Young’s modulus, elongation at break, melt-processing window, modulated crystallinity, and hydrophilic properties of the resultant PHBV nanocomposites [ 26 ]. Microcrystalline cellulose has been used to modify PLA composites through hot pressing [ 27 ] or the solution casting method [ 28 ]. However, cellulosic fibers usually experience chemical or enzymatic treatments before they are used to fabricate PLA-based composite materials [ 27 ], which will bring great complexity to the fabrication process.…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of 100% Bio-based and Degradable Ternary Cellulose/PHBV/PLA Composites

2018

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Modifying bio-based degradable polymers such as polylactide (PLA) and poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) with non-degradable agents will compromise the 100% degradability of their resultant composites. This work developed a facile and solvent-free route in order to fabricate 100% bio-based and degradable ternary cellulose/PHBV/PLA composite materials. The effects of ball milling on the physicochemical properties of pulp cellulose fibers, and the ball-milled cellulose particles on the morphology and mechanical properties of PHBV/PLA blends, were investigated experimentally and statistically. The results showed that more ball-milling time resulted in a smaller particle size and lower crystallinity by way of mechanical disintegration. Filling PHBV/PLA blends with the ball-milled celluloses dramatically increased the stiffness at all of the levels of particle size and filling content, and improved their elongation at the break and fracture work at certain levels of particle size and filling content. It was also found that the high filling content of the ball-milled cellulose particles was detrimental to the mechanical properties for the resultant composite materials. The ternary cellulose/PHBV/PLA composite materials have some potential applications, such as in packaging materials and automobile inner decoration parts. Furthermore, filling content contributes more to the variations of their mechanical properties than particle size does. Statistical analysis combined with experimental tests provide a new pathway to quantitatively evaluate the effects of multiple variables on a specific property, and figure out the dominant one for the resultant composite materials.

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Section: Introductionmentioning

confidence: 99%

Facile Fabrication of 100% Bio-based and Degradable Ternary Cellulose/PHBV/PLA Composites

2018

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“…The improvement of the Young's Modulus of PLAr + 0.25% NCFs is an indicator of increased interfacial adhesion between the PLA matrix and NCF. This could be attributed to enzymatic pretreatment, which could improve the adhesion between fibers and PLAr matrix, possibly due to the activation of hydroxyl groups of fibers [28,31]. Previous studies have reported an improvement of Young's Modulus, and therefore the strength of the PLA biocomposite with increasing concentrations of cellulosic fibers [32,33].…”

Section: Mechanical Properties Of the Fabricated Biocompositesmentioning

confidence: 99%

Biocomposite Fabrication from Enzymatically Treated Nanocellulosic Fibers and Recycled Polylactic Acid

et al. 2020

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Recycled polylactic acid (PLAr) was reinforced with treated nanocellulosic hemp fibers for biocomposite fabrication. Cellulosic fibers were extracted from hemp fibers chemically and treated enzymatically. Treated nanocellulosic fibers (NCF) were analyzed by Fourier-transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. Biocomposite fabrication was done with PLAr and three concentrations of treated NCF (0.1%, 0.25%, and 1% (v/v)) and then studied for thermal stability and mechanical properties. Increased thermal stability was observed with increasing NCF concentrations. The highest value for Young’s modulus was for PLAr + 0.25% (v/v) NCF (250.28 ± 5.47 MPa), which was significantly increased compared to PLAr (p = 0.022). There was a significant decrease in the tensile stress at break point for PLAr + 0.25% (v/v) NCF and PLAr + 1% (v/v) NCF as compared to control (p = 0.006 and 0.002, respectively). No significant difference was observed between treatments for tensile stress at yield.

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“…There are different types of polymer acids, natural or synthetic, for example, polylactic acid presents applications as polymeric acid antibacterial, due to its physical and chemical characteristics, the polylactic acid can be modified or incorporated whit other polymer matrices and form composites, it also presents high biodegradability and biocompatibility, which makes it a sustainable material [63][64][65].…”

Section: Polymermentioning

confidence: 99%

Applications of Carboxylic Acids in Organic Synthesis, Nanotechnology and Polymers

Sáenz‐Galindo¹,

López²,

Duran³

et al. 2018

Carboxylic Acid - Key Role in Life Sciences

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Carboxylic acids are versatile organic compounds. In this chapter is presented a current overview of the use of carboxylic acids in a different area as organic synthesis, nanotechnology, and polymers. The application carboxylic acids in these areas are: obtaining of small molecules, macromolecules, synthetic or natural polymers, modification surface of nanoparticles metallic, modification surface of nanostructure such as carbon nanotubes and graphene, nanomaterials, medical field, pharmacy, etc. Carboxylic acids can be natural and synthetic, can be extracted or synthesized, presented chemical structure highly polar, active in organic reactions, as substitution, elimination, oxidation, coupling, etc. In nanotechnology, the use of acid carboxylic as surface modifiers to promote the dispersion and incorporation of metallic nanoparticles or carbon nanostructure, in the area of polymer carboxylic acids present applications such monomers, additives, catalysts, etc. The purpose of this chapter is to emphasize the importance of carboxylic acids in different areas, highlighting the area of organic synthesis, nanotechnology and polymers and its applications.

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Green synthesis of novel biocomposites from treated cellulosic fibers and recycled bio-plastic polylactic acid

Cited by 66 publications

References 48 publications

Facile Fabrication of 100% Bio-based and Degradable Ternary Cellulose/PHBV/PLA Composites

Facile Fabrication of 100% Bio-based and Degradable Ternary Cellulose/PHBV/PLA Composites

Biocomposite Fabrication from Enzymatically Treated Nanocellulosic Fibers and Recycled Polylactic Acid

Applications of Carboxylic Acids in Organic Synthesis, Nanotechnology and Polymers

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