Eco-friendly isolation of cellulose nanoplatelets through oxidation under mild conditions

Chávez-Guerrero, L.; Sepúlveda-Guzmán, S.; Silva-Mendoza, Julio; Aguilar-Flores, Celia; Pérez‐Camacho, Odilia

doi:10.1016/j.carbpol.2017.11.100

Cited by 26 publications

(13 citation statements)

References 29 publications

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“…More recently, cellulose nanoplatelets (CNP), which are formed by entangled cellulose nanofibrils of 3 nm in diameter, have been prepared through oxidation under mild conditions. The thickness of such CNP is around 80 nm (Chávez-Guerrero et al, 2018).…”

Section: Nomenclature and Types Of Nanocellulosementioning

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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Section: Nomenclature and Types Of Nanocellulosementioning

confidence: 99%

Nanocellulose: From Fundamentals to Advanced Applications

et al. 2020

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“…Generally, of more interest are the following properties: mechanical, thermal, electrical conductivity, dimension stability, water absorbability, etc. [26][27][28][29][30][31]. This work intends to critically review the mechanical requirements and suggest ways of improving the mentioned properties for structural and biomedical applications.…”

Section: Introductionmentioning

confidence: 99%

Improving the Mechanical Properties of Natural Fiber Composites for Structural and Biomedical Applications

Shesan¹,

Stephen²,

Chioma³

et al. 2019

Renewable and Sustainable Composites

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Natural fiber composites are designed for different purposes including structural and non-structural ones. These natural fiber composites vary greatly in their properties including mechanical properties. Mechanical properties which include the tensile and flexural properties are highly dependent on factors such as matrix type, filler type, processing, post processing treatment and many more, factors which are quite application specific. However, many research works develop their natural fiber composite before considering the possible applications. This chapter intends to X-ray the factors that affect the mechanical properties as it relates to structural and biomedical applications and suggest ways of improving the mechanical properties.

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“…e slight differences in enzymatic activities between using either nanocellulose or parenchyma may be related by the structural differences among both carbon sources. Pretreatment given to the nanocellulose are reported to eliminate its lignin cover and makes nanocellulose easier to hydrolyze [20].…”

Section: Agave Salmiana Leaves As a Carbonmentioning

confidence: 99%

“…e exoglucanases are responsible for the hydrolysis of the crystalline portions of cellulose [2]. Agave fibers have a high crystallinity index similar to commercial cellulose; therefore, enzymes are required to be active throughout the fermentation to hydrolyze the fibers [16,20]. e activities of endoglucanase and β-glucosidase increased until 6 and 8 days, respectively.…”

Section: Cellulase Productionmentioning

confidence: 99%

Agave Leaves as a Substrate for the Production of Cellulases by Penicillium sp. and the Obtainment of Reducing Sugars

Silva-Mendoza

Gómez-Treviño

López-Chuken

et al. 2020

Journal of Chemistry

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Lignocellulosic biomass can be used to obtain fermentable sugars by enzymatic hydrolysis, and also it serves as a carbon source to produce cellulases by solid-state fermentation. In this study, we propose the use of leaves of Agave salmiana as a carbon source to produce cellulases by the fungus Penicillium sp., isolated from the same plant. The crude enzymatic extract was used to obtain sugars from the hydrolysis of the parenchymal cells of the leaves. The enzymes produced were characterized (endoglucanase 14.4 U/g; exoglucanase 3.5 U/g; β-glucosidase 4.14 U/g). The enzymes showed activities at elevated temperatures: 50°C for endoglucanase and exoglucanase and 70°C for β-glucosidase. Furthermore, the crude enzymatic extract obtained was able to hydrolyze the parenchyma in 51.6% in 48 h. The evidence presented in this paper shows the potential of the agave leaves as a source of carbon in the production of enzymes by fermentation with the consequent production of reducing sugars. In addition, the enzymes produced by Penicillium sp. could be used in the production of bioethanol, since they work at high temperatures.

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Eco-friendly isolation of cellulose nanoplatelets through oxidation under mild conditions

Cited by 26 publications

References 29 publications

Nanocellulose: From Fundamentals to Advanced Applications

Nanocellulose: From Fundamentals to Advanced Applications

Improving the Mechanical Properties of Natural Fiber Composites for Structural and Biomedical Applications

Agave Leaves as a Substrate for the Production of Cellulases by Penicillium sp. and the Obtainment of Reducing Sugars

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