Miscellaneous Cellulose Derivatives and Reactions

Heinze, Thomas; Seoud, Omar A. El; Koschella, Andreas

doi:10.1007/978-3-319-73168-1_7

Cited by 3 publications

(3 citation statements)

References 168 publications

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“…Nevertheless, cellulose is still prone to undergo derivatization processes due to its chemical structure that comprises numerous hydroxylic groups, both primary and secondary. Therefore, reactions such as esterification, etherification, silanization and oxidation have been successfully employed in order to obtain cellulose fibers (of micro- and nanometric dimensions) with enhanced reactivity due to their enriched functionality: ester groups (carboxylate, sulphate, and phosphate esters), silane moieties, ether bridges, aldehydes, and carboxylic acids/salts [ 74 ].…”

Section: Selective Oxidation Of Cellulose By Different Methodsmentioning

confidence: 99%

Selective Oxidation of Cellulose—A Multitask Platform with Significant Environmental Impact

Duceac¹,

Tanasă²,

Coseri³

2022

Materials

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Raw cellulose, or even agro-industrial waste, have been extensively used for environmental applications, namely industrial water decontamination, due to their effectiveness, availability, and low production cost. This was a response to the increasing societal demand for fresh water, which made the purification of wastewater one of the major research issue for both academic and industrial R&D communities. Cellulose has undergone various derivatization reactions in order to change the cellulose surface charge density, a prerequisite condition to delaminate fibers down to nanometric fibrils through a low-energy process, and to obtain products with various structures and properties able to undergo further processing. Selective oxidation of cellulose, one of the most important methods of chemical modification, turned out to be a multitask platform to obtain new high-performance, versatile, cellulose-based materials, with many other applications aside from the environmental ones: in biomedical engineering and healthcare, energy storage, barrier and sensing applications, food packaging, etc. Various methods of selective oxidation have been studied, but among these, (2,2,6,6-tetramethylpiperidin-1-yl)oxyl) (TEMPO)-mediated and periodate oxidation reactions have attracted more interest due to their enhanced regioselectivity, high yield and degree of substitution, mild conditions, and the possibility to further process the selectively oxidized cellulose into new materials with more complex formulations. This study systematically presents the main methods commonly used for the selective oxidation of cellulose and provides a survey of the most recent reports on the environmental applications of oxidized cellulose, such as the removal of heavy metals, dyes, and other organic pollutants from the wastewater.

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Section: Selective Oxidation Of Cellulose By Different Methodsmentioning

confidence: 99%

Selective Oxidation of Cellulose—A Multitask Platform with Significant Environmental Impact

Duceac¹,

Tanasă²,

Coseri³

2022

Materials

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“…The polar surface hydroxyl of the cellulose can be chemically changed into moieties that can interact with the immobilization matrix. [ 48,49 ]…”

Section: Polysaccharides Propertiesmentioning

confidence: 99%

Polysaccharides Based Biosensors for Medical Applications: Prospective and Future Aspects

2023

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Biopolymers have attracted much of interest in various applications needed for sustainable and biodegradable solutions. Indeed, biopolymers lessen the requirement for petroleum‐based resources, municipal solid waste output, and carbon dioxide emissions. Polysaccharides are a unique category of biopolymers that are especially characteristic such as biocompatibility and editability. Polysaccharides functionalization plays a significant role in various applications and their suitability for additive applications. Sensor‐based polysaccharides are widely used with many drawbacks localized in durability, moldability, and sensitivity. Otherwise, biosensors are devices monitoring a specimen's biological phenomena or measurements, usually not disposable devices. For that, biosensors are needed urgently to address the high cost of disposable supplies in the medical diagnostic industry, which span many elements of medical diagnostic applications. Additionally, manipulating of polysaccharide‐based materials is considered accessible and usable and requires low equipment requirements. Herein the main features of polysaccharides will be discussed, along with potential applications as biosensors for medical diagnosis and new lines of inquiry with such focus on the main required to formulate polysaccharides biosensors.This article is protected by copyright. All rights reserved

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“…Moreover, use of harsh chemicals causes cellulose degradation during the process and produces large amounts of waste. 3 On the other hand, the homogeneous approach contributes to achieving better control of reactions with a high conversion rate. In the case of homogeneous modification, cellulose molecules are assumed to have full accessibility of all hydroxyl groups for the reaction.…”

Section: Introductionmentioning

confidence: 99%

Continuous process of cellulose dissolution and transesterification reaction catalysed by ionic liquid in twin screw extruder

et al. 2023

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Miscellaneous Cellulose Derivatives and Reactions

Cited by 3 publications

References 168 publications

Selective Oxidation of Cellulose—A Multitask Platform with Significant Environmental Impact

Selective Oxidation of Cellulose—A Multitask Platform with Significant Environmental Impact

Polysaccharides Based Biosensors for Medical Applications: Prospective and Future Aspects

Continuous process of cellulose dissolution and transesterification reaction catalysed by ionic liquid in twin screw extruder

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