Preparation of Cellulose Nanocrystal-Reinforced Poly(lactic acid) Nanocomposites through Noncovalent Modification with PLLA-Based Surfactants

Marcos, M.; Pilate, Florence; Oliveira, Franciéli Borges de; Khelifa, Farid; Dubois, Philippe; Raquez, Jean-Marie; Dufresne, Alain

doi:10.1021/acsomega.7b00387

Cited by 65 publications

(40 citation statements)

References 53 publications

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“…The modified CNC was successfully used for the reinforcement of hydrophobic polymer matrices, like low-density polyethylene (LDPE). A similar phenomenon was also observed in the surface modification of CNC by PEG- b -PLLA [ 169 ]. The modified CNC was used for the reinforcement of the PLA matrix.…”

Section: Polymer Nanocomposites Reinforced By Cncsupporting

confidence: 76%

“…However, there was no significant improvement in mechanical properties in addition to the 10% increase in water absorption. Mariano and co-workers reported the surface modification of CNC by imidazolium-end-capped PLLA for the reinforcement of PLA [ 169 ]. However, there was not so much improvement in the tensile properties.…”

Section: Polymer Nanocomposites Reinforced By Cncmentioning

confidence: 99%

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Recent Advances in Nanocellulose Composites with Polymers: A Guide for Choosing Partners and How to Incorporate Them

2018

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Abstract:In recent years, the research on nanocellulose composites with polymers has made significant contributions to the development of functional and sustainable materials. This review outlines the chemistry of the interaction between the nanocellulose and the polymer matrix, along with the extent of the reinforcement in their nanocomposites. In order to fabricate well-defined nanocomposites, the type of nanomaterial and the selection of the polymer matrix are always crucial from the viewpoint of polymer-filler compatibility for the desired reinforcement and specific application. In this review, recent articles on polymer/nanocellulose composites were taken into account to provide a clear understanding on how to use the surface functionalities of nanocellulose and to choose the polymer matrix in order to produce the nanocomposite. Here, we considered cellulose nanocrystal (CNC) and cellulose nanofiber (CNF) as the nanocellulosic materials. A brief discussion on their synthesis and properties was also incorporated. This review, overall, is a guide to help in designing polymer/nanocellulose composites through the utilization of nanocellulose properties and the selection of functional polymers, paving the way to specific polymer-filler interaction.

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Section: Polymer Nanocomposites Reinforced By Cncsupporting

confidence: 76%

Section: Polymer Nanocomposites Reinforced By Cncmentioning

confidence: 99%

Recent Advances in Nanocellulose Composites with Polymers: A Guide for Choosing Partners and How to Incorporate Them

2018

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“…However, its insufficient mechanical properties handicap its profound application in bone tissue engineering [3][4][5]. Incorporating reinforcement phases to obtain a composite material is a feasible method to overcome this issue [6][7][8]. Nanofillers such as graphene oxide [9,10], carbon nanotubes [11,12], diamond nanoparticles [13,14], and magnesium oxide nanoparticles [15][16][17] have been introduced into PLLA matrix to improve the mechanical performance.…”

Section: Introductionmentioning

confidence: 99%

Surface-Modified Graphene Oxide with Compatible Interface Enhances Poly-L-Lactic Acid Bone Scaffold

Wang

Yang

et al. 2020

Journal of Nanomaterials

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Graphene oxide (GO) usually serves as a reinforce phase in polymer because of its superior mechanical strength and high specific surface area. In this work, GO was grafted with L-lactic acid monomer (denoted as GO@PLLA) to overcome the aggregation in matrix and then incorporated into the poly-L-lactic acid (PLLA) scaffold fabricated by selective laser sintering. In hybrid scaffold, GO@PLLA exhibited uniform dispersion in the matrix. Furthermore, mechanical interlock between GO@PLLA and PLLA matrix formed and reinforced the interface bonding. On the other hand, the heterogeneous distributed GO acted as effective nucleating agent and resultantly enhanced the crystallization. Results showed that the tensile and compressive strength of scaffolds increased by 143.3% and 127.6%, respectively. Meanwhile, the scaffold exhibited an increased degradation rate of 37.9%, which could be attributed to the abundant hydrophilic functional groups on GO. Moreover, the scaffold exhibited favorable bioactivity and biocompatibility. Herein, the developed hybrid scaffold showed potential capacity for bone tissue engineering.

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“…Generally, the incorporation of CNCs into the polymeric matrix through a homogeneous dispersion results in the formation of a network of matrix‐CNCs with an enormous amount of interfacial contacts between polymeric matrix and CNCs owing to large surface area of CNCs . The strong interfacial adhesion between nanocomposite components leads to an effective stress transfer from matrix to CNCs and consequently strengthens the resulting nanocomposites .…”

Section: Introductionmentioning

confidence: 99%

Green esterification: A new approach to improve thermal and mechanical properties of poly(lactic acid) composites reinforced by cellulose nanocrystals

Shojaeiarani

Bajwa

Stark

2018

J of Applied Polymer Sci

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Cellulose nanocrystal (CNCs)‐reinforced poly(lactic acid) (PLA) nanocomposites were prepared using twin screw extrusion followed by injection molding. Masterbatch approach was used to achieve more efficient dispersion of CNCs in PLA matrix. Modified CNCs (b‐CNCs) were prepared using benzoic acid as a nontoxic material through a green esterification method in a solvent‐free technique. Transmission electron microscopy images did not exhibit significant differences in the structure of b‐CNCs as compared with unmodified CNCs. However, a reduction of 6.6–15.5% in the aspect ratio of b‐CNCs was observed. The fracture surface of PLA‐b‐CNCs nanocomposites exhibited rough and irregular pattern which confirmed the need of more energy for fracture. Pristine CNCs showed a decrease in the thermal stability of nanocomposites, however, b‐CNCs nanocomposites exhibited higher thermal stability than pure PLA. The average storage modulus was improved by 38 and 48% by addition of CNCs and b‐CNCs in PLA, respectively. The incorporation of b‐CNCs increased Young's modulus, ultimate tensile stress, elongation at break, and impact strength by 27.02, 10.90, 4.20, and 32.77%, respectively, however, CNCs nanocomposites exhibited a slight decrease in ultimate strength and elongation at break. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46468.

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Preparation of Cellulose Nanocrystal-Reinforced Poly(lactic acid) Nanocomposites through Noncovalent Modification with PLLA-Based Surfactants

Cited by 65 publications

References 53 publications

Recent Advances in Nanocellulose Composites with Polymers: A Guide for Choosing Partners and How to Incorporate Them

Recent Advances in Nanocellulose Composites with Polymers: A Guide for Choosing Partners and How to Incorporate Them

Surface-Modified Graphene Oxide with Compatible Interface Enhances Poly-L-Lactic Acid Bone Scaffold

Green esterification: A new approach to improve thermal and mechanical properties of poly(lactic acid) composites reinforced by cellulose nanocrystals

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