Cellulose nanocrystal structure in the presence of salts

Moud, Aref Abbasi; Arjmand, Mohammad; Liu, Jie; Yang, Yongfei; Sanati‐Nezhad, Amir; Hejazi, S. Hossein

doi:10.1007/s10570-019-02734-0

Cited by 37 publications

(21 citation statements)

References 65 publications

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“…The strong effect of Ca 2? on agglomeration could furthermore be induced by more intense clustering of CNCs in the presence of divalent salts, or could be initiated due to cross-linking of CNCs by multivalent cations (Wu et al 2017;Moud et al 2019).…”

Section: Salt-induced Agglomeration Of Cncsmentioning

confidence: 99%

“…Thus, a significant effort has been made to understand and to tune their colloidal stability. Several works have addressed the effect of electrolytes and ionic species on the agglomeration and gelation behavior of colloidal CNCs (Dong et al 1996;Dong and Gray 1997;Boluk et al 2011;Shafiei-Sabet et al 2014;Cherhal et al 2015;Peddireddy et al 2016;Phan-Xuan et al 2016;Bertsch et al 2017;Mikhailov et al 2017;Wu et al 2017Wu et al , 2019Liu et al 2018;Moud et al 2018Moud et al , 2019Qi et al 2019). All of the aforementioned studies focused on agglomeration of sulfated CNCs induced by chlorides, with inorganic counterions of varying valence.…”

Section: Introductionmentioning

confidence: 99%

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Agglomeration of cellulose nanocrystals: the effect of secondary sulfates and their use in product separation

2020

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This study was aimed at the development of a better understanding of the agglomeration behavior of sulfated cellulose nanocrystals (CNCs) in the presence of sulfates with monovalent (NH4+, K+, Na+) and divalent (Ca2+) cations, and to demonstrate their potential in simple and efficient product separation. Protonated CNCs were counterion-exchanged and their ionic strength was increased by adding sulfates of the respective cation to trigger agglomeration. The critical concentrations of agglomeration (CAC) and peptization (CPC) were determined. We found that the agglomeration behavior of CNCs could be attributed to matching affinities between the cations and the sulfate half-ester groups on the CNC surfaces. Based on these findings, a facile and efficient downstream process was designed to separate CNCs from neutralized reactant solutions using CAC and CPC. This method provides colloidally stable CNCs at high yield provided by centrifugation. When salt concentrations in the product are maintained below the CAC, as prepared CNCs from neutralized reactant solutions might be used in hydrogels and emulsions.

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Section: Salt-induced Agglomeration Of Cncsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Agglomeration of cellulose nanocrystals: the effect of secondary sulfates and their use in product separation

2020

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“…The preparation of the CNC was affected by a series of factors that involved the reaction conditions, the carboxyl content, the homogenization treatment, and other circumstances [43][44][45], in which the carboxyl content of the CNC controlled the dispersity of the cellulose fiber in water as well as the productivity of the CNC [46].…”

Section: Effect Of Treatment On the Dispersion Of The Cncmentioning

confidence: 99%

Preparation and Applications of the Cellulose Nanocrystal

Yang

Zhou

Zhang

et al. 2019

International Journal of Polymer Science

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Cellulose widely existed in plants and bacteria, which takes important effect on the synthesis of macromolecule polymer material. Because of its great material properties, the cellulose nanocrystal (CNC) showed its necessary prospect in various industrial applications. As a renewable future material, the preparation methods of the CNC were reviewed in this paper. Meanwhile, the important applications of CNC in the field of composites, barrier film, electronics, and energy consumption were also mentioned with brief introductions. The summarized preparations and considerable applications provided operable ideas and methods for the future high-end and eco-friendly functional composites. Suggestions for potential applications were also discussed.

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“…Cellulose is an organic molecule with a formula comprising a polysaccharide composed of a linear polymer of hundreds or even thousands of connected D-glucose units. Cellulose is a structural component of the major cell wall of plants, many types of algae, and oomycetes [1][2][3]. This natural polymer cannot be melted (heated) or dissolved (in common organic solvents).…”

Section: Introductionmentioning

confidence: 99%

Cellulose through the Lens of Microfluidics: A Review

Moud

2022

Applied Biosciences

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Cellulose, a linear polysaccharide, is the most common and renewable biopolymer in nature. Because this natural polymer cannot be melted (heated) or dissolved (in typical organic solvents), making complicated structures from it necessitates specialized material processing design. In this review, we looked at the literature to see how cellulose in various shapes and forms has been utilized in conjunction with microfluidic chips, whether as a component of the chips, being processed by a chip, or providing characterization via chips. We utilized more than approximately 250 sources to compile this publication, and we sought to portray cellulose manufacturing utilizing a microfluidic system. The findings reveal that a variety of products, including elongated fibres, microcapsules, core–shell structures and particles, and 3D or 2D structured microfluidics-based devices, may be easily built utilizing the coupled topics of microfluidics and cellulose. This review is intended to provide a concise, visual, yet comprehensive depiction of current research on the topic of cellulose product design and understanding using microfluidics, including, but not limited to, paper-based microfluidics design and implications, and the emulsification/shape formation of cellulose inside the chips.

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Cellulose nanocrystal structure in the presence of salts

Cited by 37 publications

References 65 publications

Agglomeration of cellulose nanocrystals: the effect of secondary sulfates and their use in product separation

Agglomeration of cellulose nanocrystals: the effect of secondary sulfates and their use in product separation

Preparation and Applications of the Cellulose Nanocrystal

Cellulose through the Lens of Microfluidics: A Review

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