Biobased nucleation agents for poly-L-(lactic acid) — Effect on crystallization, rheological and mechanical properties

Aouay, Mohamed; Magnin, Albert; Putaux, Jean‐Luc; Boufi, Sami

doi:10.1016/j.ijbiomac.2022.07.069

Cited by 7 publications

(6 citation statements)

References 43 publications

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“…The crystallinity degree of neat PLLA was around 10 %, proving its poor most likely by facilitating the chain mobility. This result is consistent with our previous and other works (Aouay et al, 2022;Clarkson et al, 2020). The addition of CNCs increased Xc to 50-51% at a content of 2 and 4 wt%, confirming the nucleating ability of CNCs.…”

Section: Colloidal Properties and Morphology Of Cncs And Am-cncssupporting

confidence: 93%

“…In our previous work, the ability of various biobased NPs, having diverse morphologies and surface properties, to act as nucleating agents for PLLA was studied. These NPs included cellulose nanofibrils with and without lignin (LCNFs and CNFs) as well as cellulose, chitin, and starch nanoparticles (CNCs, ChNCs, and SNPs) (Aouay et al, 2022). Films containing 1 wt% of different NPs were prepared using a single melt-processing step where poly(ethylene glycol) (PEG) was used as a carrier for the NPs at a content of 5 wt% with respect to PLLA.…”

Section: Introductionmentioning

confidence: 99%

“…According to measurements of surface energy, it was found that the NPs exhibiting the greatest polar component, represented as g p , possessed the lowest t1/2 and exhibited the most pronounced ability to promote nucleation. (Fortunati et al, 2012;Espino-Pérez et al, 2013;Yu et al, 2017;Aouay et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Enhancing mechanical and thermal properties of plasticized poly-L-(lactic acid) by incorporating aminated-cellulose nanocrystals

Aouay

Magnin

Putaux

et al. 2023

Industrial Crops and Products

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Section: Colloidal Properties and Morphology Of Cncs And Am-cncssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Enhancing mechanical and thermal properties of plasticized poly-L-(lactic acid) by incorporating aminated-cellulose nanocrystals

Aouay

Magnin

Putaux

et al. 2023

Industrial Crops and Products

Self Cite

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“…The excess energy due to the surface was calculated to be 10.9 kcal mol –1 per monomer (156 mJ m –2 ). The surface energy of chitin nanocrystal 20 determined using the contact angle method was reported to be 50 mJ m –2 . The energy due to the step was 8.5 kcal mol –1 per monomer for the crystal with 33 chains, and the binding energy for the additional chain was −2.34 kcal mol –1 per monomer.…”

Section: Resultsmentioning

confidence: 99%

Chitin and Chitosan Binding to the α-Chitin Crystal: A Molecular Dynamics Study

et al. 2023

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Understanding the binding of chitosan oligomers to the surface of a chitin nanocrystal is important for improving the enzymatic deacetylation of chitin and for the design of chitin/chitosan composite films. Here, we study the binding of several chito-oligomers to the (100) surface of an α-chitin crystal using molecular dynamics (MD), steered MD, and umbrella sampling. The convergence of the free energy was carefully considered and yielded a binding energies of −12.5 and −2 kcal mol–1 for 6-monomer-long chitin and uncharged chitosan oligomers, respectively. We also found that the results for the umbrella sampling were consistent with the force profile from the steered MD and with classical MD simulations of the adsorption process. Our results give insight into the molecular-scale interactions, which can be helpful for the design of new chitin composite films. Furthermore, the free energy curves we present can be used to validate coarse-grained models for chitin and chitosan, which are necessary to study the self-assembly of chitin crystals due to the long time scale of the process.

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“…PEG was used in these papers both as a compatibilizing agent to improve the adhesion between cellulose and PLA, being grafted onto the cellulose chain (cellulose-g-PEG), and as plasticizer to increase chain mobility of PLA. The molecular weight of the PEG used ranged from 400 g/mol to 6000 g/mol, apart from the papers of Raisipour-Shirazi et al [106], Safdari et al [109], and Aouay et al [111], who used PEG with higher molecular weight values, such as 180,000 g/mol, 20,000 g/mol, and 35,000 g/mol, respectively. In general, authors who used PEG as a coupling agent reported the use of PEG with molecular weight of around 600 to 750 g/mol.…”

Section: Effect Of Peg On the Properties Of Pla/cellulose Compositesmentioning

confidence: 99%

Cellulose-Reinforced Polylactic Acid Composites for Three-Dimensional Printing Using Polyethylene Glycol as an Additive: A Comprehensive Review

Benini,

Bomfim,

Voorwald

2023

Polymers

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Growing concerns about environmental issues and global warming have garnered increased attention in recent decades. Consequently, the use of materials sourced from renewable and biodegradable origins, produced sustainably, has piqued the interest of scientific researchers. Biodegradable and naturally derived polymers, such as cellulose and polylactic acid (PLA), have consistently been the focus of scientific investigation. The objective is to develop novel materials that could potentially replace conventional petroleum-based polymers, offering specific properties tailored for diverse applications while upholding principles of sustainability and technology as well as economic viability. Against this backdrop, the aim of this review is to provide a comprehensive overview of recent advancements in research concerning the use of polylactic acid (PLA) and the incorporation of cellulose as a reinforcing agent within this polymeric matrix, alongside the application of 3D printing technology. Additionally, a pivotal additive in the combination of PLA and cellulose, polyethylene glycol (PEG), is explored. A systematic review of the existing literature related to the combination of these materials (PLA, cellulose, and PEG) and 3D printing was conducted using the Web of Science and Scopus databases. The outcomes of this search are presented through a comparative analysis of diverse studies, encompassing aspects such as the scale and cellulose amount added into the PLA matrix, modifications applied to cellulose surfaces, the incorporation of additives or compatibilizing agents, variations in molecular weight and in the quantity of PEG introduced into the PLA/cellulose (nano)composites, and the resulting impact of these variables on the properties of these materials.

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Biobased nucleation agents for poly-L-(lactic acid) — Effect on crystallization, rheological and mechanical properties

Cited by 7 publications

References 43 publications

Enhancing mechanical and thermal properties of plasticized poly-L-(lactic acid) by incorporating aminated-cellulose nanocrystals

Enhancing mechanical and thermal properties of plasticized poly-L-(lactic acid) by incorporating aminated-cellulose nanocrystals

Chitin and Chitosan Binding to the α-Chitin Crystal: A Molecular Dynamics Study

Cellulose-Reinforced Polylactic Acid Composites for Three-Dimensional Printing Using Polyethylene Glycol as an Additive: A Comprehensive Review

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