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Synthesis and conservation of cellulose nanocrystals
Carbohydrate Polymers, 2020This work deals with the preparation of cellulose nanocrystals (CNC) from microcrystalline cellulose by acid hydrolysis, discusses how their characteristics varied according to the drying technique used for their conservation and analyzes their re-dispersion in water. A stable water dispersion of "rod" or "needle" type CNC (≈5 nm of diameter, 276 nm of
Di Giorgio, Luciana +3 more
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Nanoengineering the Redispersibility of Cellulose Nanocrystals
Biomacromolecules, 2022Enhancing the redispersibility of dried colloidal particles to yield stable dispersions after rehydration is a persistent challenge in the sustainable processing of nanocelluloses due to hydrogen bonding-induced irreversible aggregation. Programming nanocelluloses, such as cellulose nanocrystals (CNC), with moieties that enable colloidal repulsion ...
Breanna Huntington +2 more
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2021
Among different types of nanomaterials, cellulose nanocrystals (CNCs) have attained great attention for their attractive and excellent properties, such as high surface area, colloidal stability, low toxicity, and high mechanical strength. These nanocrystals are obtained from different cellulose sources: wood pulp, microcrystalline cellulose, straw ...
Tejaswini Appidi +2 more
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Among different types of nanomaterials, cellulose nanocrystals (CNCs) have attained great attention for their attractive and excellent properties, such as high surface area, colloidal stability, low toxicity, and high mechanical strength. These nanocrystals are obtained from different cellulose sources: wood pulp, microcrystalline cellulose, straw ...
Tejaswini Appidi +2 more
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Facile extraction of cellulose nanocrystals
Carbohydrate Polymers, 2019A simple process for extracting cellulose nanocrystals (CNCs) is proposed that only uses high-pressure homogenization (HPH) controlling a process temperature. The proposed process was assessed and compared with normal production through acidic hydrolysis.
Nae-Man Park +3 more
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Cellulose nanocrystals by acid vapour: towards more effortless isolation of cellulose nanocrystals
Faraday Discussions, 2017Cellulose nanocrystals (CNCs) are topical in materials science but their full potential is yet to be fulfilled because of bottlenecks in the production: the process consumes huge amounts of water, recycling the strong acid catalyst is difficult, and purification steps are cumbersome, particularly with lengthy dialysis.
Eero Kontturi +7 more
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Cellulose Nanocrystal-Filled Carboxymethyl Cellulose Nanocomposites
Journal of Nanoscience and Nanotechnology, 2006Polymer nanocomposites are one of the important application areas for nanotechnology. Naturally derived organic nanophase materials are of special interest in the case of polymer nanocomposites. Carboxymethyl cellulose is a polyelectrolyte derived from natural materials. It has been extensively studied as a hydrogel polymer.
John Simonsen, YongJae Choi
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Thermal Degradation of Cellulose Filaments and Nanocrystals
Biomacromolecules, 2020Cellulose-derived materials, such as microcellulose and nanocellulose, are sustainable materials with a wide range of applications. Here, through a multi-analytical approach, we investigate the thermal degradation of microfibrillar cellulose filaments (CFs); acidic cellulose nanocrystals (CNC-H), containing sulfate half-ester groups on the surface; and
Francesco D’Acierno +3 more
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Iridescent Cellulose Nanocrystal Films Modified with Hydroxypropyl Cellulose
Biomacromolecules, 2020The introduction of polymers into a chiral nematic cellulose nanocrystal (CNC) matrix allows for the tuning of optical and mechanical properties, enabling the development of responsive photonic materials. In this study, we explored the incorporation of hydroxypropyl cellulose (HPC) into a CNC film prepared by slow evaporation.
Christopher M. Walters +5 more
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Cellulose Nanocrystal Submonolayers by Spin Coating
Langmuir, 2007Dilute concentrations of cellulose nanocrystal solutions were spin coated onto different substrates to investigate the effect of the substrate on the nanocrystal submonolayers. Three substrates were probed: silica, titania, and amorphous cellulose. According to atomic force microscopy (AFM) images, anionic cellulose nanocrystals formed small aggregates
Päivi Ahonen +5 more
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Cellulose nanocrystals: Fundamentals and biomedical applications
Carbohydrate Polymers, 2022The present review explores the recent developments of cellulose nanocrystals, a class of captivating nanomaterials in variety of applications. CNCs are made by acid hydrolysing cellulosic materials like wood, cotton, tunicate, flax fibers by sonochemistry.
Atul P. Sherje, Prajakta Mali
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