Twenty-five years of cellulose chemistry: innovations in the dissolution of the biopolymer and its transformation into esters and ethers

Kostag, Marc; Gericke, Martin; Heinze, Thomas; Seoud, Omar A. El

doi:10.1007/s10570-018-2198-0

Cited by 128 publications

(71 citation statements)

References 290 publications

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“…Most certainly, these IL-cellulose interactions proceed simultaneously rather than in the above-mentioned stepwise manner, as represented schematically in Figure 3 for the dissolution of cellulose in a mixture of EtMeImAcO-DMSO [41]. Thus, the charge density (hardness; Lewis basicity) and volume of the anion, the volume, rigidity, Lewis acidity, and hydrophobic character of the cation are determinant to cellulose dissolution [16]. Synthesizing a homologous series of ILs, QAEs, and salts of super-bases of varying molecular structures is not a demanding task.…”

Section: Solvatochromism and Calculation Of Solvatochromic Parametersmentioning

confidence: 99%

“…Below, we focus our discussion of these issues on ionic liquids (ILs), and two of their sub-classes: quaternary ammonium electrolytes (QAEs), and salts of super-bases. Additional discussion on aspects of dissolution of cellulose and other natural polymers in ILs and applications of the solutions obtained therefrom can be found elsewhere [7][8][9][10][11][12][13][14][15][16][17].…”

Section: Ionic Liquids Quaternary Ammonium Electrolytes and Salts Omentioning

confidence: 99%

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Cellulose in Ionic Liquids and Alkaline Solutions: Advances in the Mechanisms of Biopolymer Dissolution and Regeneration

et al. 2019

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This review is focused on assessment of solvents for cellulose dissolution and the mechanism of regeneration of the dissolved biopolymer. The solvents of interest are imidazole-based ionic liquids, quaternary ammonium electrolytes, salts of super-bases, and their binary mixtures with molecular solvents. We briefly discuss the mechanism of cellulose dissolution and address the strategies for assessing solvent efficiency, as inferred from its physico-chemical properties. In addition to the favorable effect of lower cellulose solution rheology, microscopic solvent/solution properties, including empirical polarity, Lewis acidity, Lewis basicity, and dipolarity/polarizability are determinants of cellulose dissolution. We discuss how these microscopic properties are calculated from the UV-Vis spectra of solvatochromic probes, and their use to explain the observed solvent efficiency order. We dwell briefly on use of other techniques, in particular NMR and theoretical calculations for the same purpose. Once dissolved, cellulose is either regenerated in different physical shapes, or derivatized under homogeneous conditions. We discuss the mechanism of, and the steps involved in cellulose regeneration, via formation of mini-sheets, association into "mini-crystals", and convergence into larger crystalline and amorphous regions. We discuss the use of different techniques, including FTIR, X-ray diffraction, and theoretical calculations to probe the forces involved in cellulose regeneration.

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Section: Solvatochromism and Calculation Of Solvatochromic Parametersmentioning

confidence: 99%

Section: Ionic Liquids Quaternary Ammonium Electrolytes and Salts Omentioning

confidence: 99%

Cellulose in Ionic Liquids and Alkaline Solutions: Advances in the Mechanisms of Biopolymer Dissolution and Regeneration

et al. 2019

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“…Cellulose, a polymer of (1→4)-linked β-d-glucose units, and its derivatives, as well as other glucose-derived polysaccharides such as pullulan, dextrans, and glucans, are also used in bone tissue engineering [90]. Recently, nanocellulose with incorporated sulfate and phosphate groups was cross-linked with hydrazone and cast and dried into aerogels.…”

Section: Polysaccharide Scaffoldsmentioning

confidence: 99%

Polysaccharide-Based Systems for Targeted Stem Cell Differentiation and Bone Regeneration

et al. 2019

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Bone tissue engineering is an ever-changing, rapidly evolving, and highly interdisciplinary field of study, where scientists try to mimic natural bone structure as closely as possible in order to facilitate bone healing. New insights from cell biology, specifically from mesenchymal stem cell differentiation and signaling, lead to new approaches in bone regeneration. Novel scaffold and drug release materials based on polysaccharides gain increasing attention due to their wide availability and good biocompatibility to be used as hydrogels and/or hybrid components for drug release and tissue engineering. This article reviews the current state of the art, recent developments, and future perspectives in polysaccharide-based systems used for bone regeneration.

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“…7 The versatility of carbohydrate materials has resulted in nanomaterials for tissue engineering and cell growth 8 as well as in bulk industrial production in the paper and textile industries. 9 However, polysaccharide materials have some major drawbacks. Complex polysaccharides are less well understood at the molecular level than other biomaterials and tailor-made carbohydrate materials are still beyond reach (Fig.…”

Section: Introductionmentioning

confidence: 99%

Materials science based on synthetic polysaccharides

Delbianco

Seeberger

2020

Mater. Horiz.

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Twenty-five years of cellulose chemistry: innovations in the dissolution of the biopolymer and its transformation into esters and ethers

Cited by 128 publications

References 290 publications

Cellulose in Ionic Liquids and Alkaline Solutions: Advances in the Mechanisms of Biopolymer Dissolution and Regeneration

Cellulose in Ionic Liquids and Alkaline Solutions: Advances in the Mechanisms of Biopolymer Dissolution and Regeneration

Polysaccharide-Based Systems for Targeted Stem Cell Differentiation and Bone Regeneration

Materials science based on synthetic polysaccharides

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