Green Preparation of Cellulose Nanocrystal and Its Application

Kang, Xingya; Kuga, Shigenori; Wang, Chao; Zhao, Yang; Wu, Min; Huang, Yong

doi:10.1021/acssuschemeng.7b02363

Cited by 111 publications

(67 citation statements)

References 16 publications

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“…No phase separation was found, indicating good adhesion between the CS and the CNC. Structural studies confirmed that the incorporation of CNC into the CS matrix resulted in a homogeneous composite, in which the individual components are connected by hydrogen bonds [48]. Similar findings were reported by Garcia et al [49] and Yadav et al [7].…”

Section: Microstructure and Dispersibility Of Cncsupporting

confidence: 86%

“…MPa [33]. The TS values of films were comparable to those of plastic-based films, such as films based on LDPE (8-10 MPa), HDPE (19-31 MPa), EVOH (6-19 MPa), PCL (4 MPa), PS (31-49 MPa), PLA (45 MPa), PVC (42)(43)(44)(45)(46)(47)(48)(49)(50)(51)(52)(53)(54)(55), and PP (27-98 MPa) [50]. Li et al [69] found that the TS of the composite films increased from 85 to 120 MPa, with an increase of CNC content from 0 to 15 wt.%.…”

Section: Mechanical Propertiesmentioning

confidence: 67%

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Cellulose Nanocrystal Reinforced Chitosan Based UV Barrier Composite Films for Sustainable Packaging

et al. 2020

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In this study, green composite films based on cellulose nanocrystal/chitosan (CNC/CS) were fabricated by solution casting. FTIR, XRD, SEM, and TEM characterizations were conducted to determine the structure and morphology of the prepared films. The addition of only 4 wt.% CNC in the CS film improved the tensile strength and Young’s modulus by up to 39% and 78%, respectively. Depending on CNC content, the moisture absorption decreased by 34.1–24.2% and the water solubility decreased by 35.7–26.5% for the composite films compared with neat CS film. The water vapor permeation decreased from 3.83 × 10−11 to 2.41 × 10−11 gm−1 s−1Pa−1 in the CS-based films loaded with (0–8 wt.%) CNC. The water and UV barrier properties of the composite films showed better performance than those of neat CS film. Results suggested that CNC/CS nanocomposite films can be used as a sustainable packaging material in the food industry.

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Section: Microstructure and Dispersibility Of Cncsupporting

confidence: 86%

Section: Mechanical Propertiesmentioning

confidence: 67%

Cellulose Nanocrystal Reinforced Chitosan Based UV Barrier Composite Films for Sustainable Packaging

et al. 2020

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“…Facile and rapid one-step hydrolysis by H 2 SO 4 /HNO 3 mixed acid Cheng et al, 2020 Blue agave leaves and bagasse fibers Sonochemical acid hydrolysis enhanced with sonication Robles et al, 2018 Eucalyptus pulp Periodate oxidation route followed by reductive treatment with NaBH 4 Errokh et al, 2018 Cotton cellulose powder High-pressure homogenization controlling a process temperature Park et al, 2019 Commercial microcrystalline cellulose A two-step collaborative process combining solvothermal pretreatment and mechanical exfoliation Gao et al, 2019 Commercial microcrystalline cellulose Ball milling with water followed by centrifugation Kang et al, 2018 Lignocellulosic biomass Hydrolysis by Ni(II)-transition metal salt followed by washing with distilled water, centrifugation, sonication and dialysis Yahya et al, 2018 use of toxic chemicals, which are detrimental to human and the environment. More recently, Charreau et al have emphasized the increasing industrial interest on the field of cellulosic nanomaterials, which is evidenced by the astonishing increase in nanocellulose patents since 2010, and especially within the last 5 years, suggesting that the increasing trend would not stop in the following years (Charreau et al, 2020).…”

Section: Natural Source Methodology Referencesmentioning

confidence: 99%

Nanocellulose: From Fundamentals to Advanced Applications

et al. 2020

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Over the past few years, nanocellulose (NC), cellulose in the form of nanostructures, has been proved to be one of the most prominent green materials of modern times. NC materials have gained growing interests owing to their attractive and excellent characteristics such as abundance, high aspect ratio, better mechanical properties, renewability, and biocompatibility. The abundant hydroxyl functional groups allow a wide range of functionalizations via chemical reactions, leading to developing various materials with tunable features. In this review, recent advances in the preparation, modification, and emerging application of nanocellulose, especially cellulose nanocrystals (CNCs), are described and discussed based on the analysis of the latest investigations (particularly for the reports of the past 3 years). We start with a concise background of cellulose, its structural organization as well as the nomenclature of cellulose nanomaterials for beginners in this field. Then, different experimental procedures for the production of nanocelluloses, their properties, and functionalization approaches were elaborated. Furthermore, a number of recent and emerging uses of nanocellulose in nanocomposites, Pickering emulsifiers, wood adhesives, wastewater treatment, as well as in new evolving biomedical applications are presented. Finally, the challenges and opportunities of NC-based emerging materials are discussed.

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“…Grinding is a green mechanical process to produce nanocellulose. Different grinders types can be used, as media mill [ 23 ], colloidal mill [ 50 ], or ball mill [ 55 ]. However, one of the grinding drawbacks is the size polydispersity of nanocellulose.…”

Section: Eco-friendly Pickering Emulsionsmentioning

confidence: 99%

Interest of Pickering Emulsions for Sustainable Micro/Nanocellulose in Food and Cosmetic Applications

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Gillet²,

Gressin³

et al. 2020

Polymers

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In the present review, natural and non-toxic particles made of micro/nanocellulose were specifically targeted as stabilizers of emulsions located at dispersed and continuous phases interfaces (called Pickering Emulsions, PEs). PEs are biphasic systems stabilized by solid particles with a recent interest in food and cosmetic domains. PEs have been more and more studied in the last ten years due to their advantages compared to conventional emulsions with surfactants. PEs have already been stabilized with various types of particles and particularly cellulose. Even if some studies showed that PEs were more stable when cellulose was chemically modified, numerous other recent studies showed that unmodified micro/nanocellulose is also promising biomaterial to stabilize PEs. Micro/nanocelluloses can be extracted by various green processes from numerous agricultural wastes and co-products, as banana peels, corncob, ginkgo seed shells, lime residues, mangosteen rind, oil palm empty fruit bunches, pistachio shells, as well as wheat straw. Main green processes used to treat cellulose are grinding, high pressure homogenization, microfluidization, enzymatic hydrolysis, subcritical water, extrusion, electron beam irradiation, cryocrushing, microwaves or sonication. PEs formulated with cellulose clearly participate to a global sustainable development but, additional studies will be necessary to better understand PEs stability and improve properties.

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Green Preparation of Cellulose Nanocrystal and Its Application

Cited by 111 publications

References 16 publications

Cellulose Nanocrystal Reinforced Chitosan Based UV Barrier Composite Films for Sustainable Packaging

Cellulose Nanocrystal Reinforced Chitosan Based UV Barrier Composite Films for Sustainable Packaging

Nanocellulose: From Fundamentals to Advanced Applications

Interest of Pickering Emulsions for Sustainable Micro/Nanocellulose in Food and Cosmetic Applications

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