Cellulose solubility in ionic liquids and regeneration in water and hydrogen peroxide solution: a comparative examination of morphology and physicochemical properties

Cellulose solubility in ionic liquids and regeneration in water and hydrogen peroxide solution: a comparative examination of morphology and physicochemical properties

The main objective of this work is to present a comprehensive analysis of the morphology, topography, and thermal behavior of modified cellulose as a function of solvation temperature, ionic liquid type, and regeneration agent. Avicel microcrystalline cellulose was dissolved at two temperatures (73 ...

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Bibliographic Details
Published in:Cellulose (London) Vol. 30; no. 10; pp. 6149 - 6162
Main Authors: Love, Stacy A., Magaziner, Ethan, Melissaratos, Diana S., Seelam, Sneha, Salas-de la Cruz, David
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 01-07-2023
Springer Nature B.V
Subjects:
Bioorganic Chemistry
Cellulose
Ceramics
Chemistry
Chemistry and Materials Science
Composites
Crystalline cellulose
Glass
Hydrogen peroxide
Ionic liquids
Ions
Morphology
Natural Materials
Organic Chemistry
Original Research
Physical Chemistry
Polymer Sciences
Polymer solubility
Polymers
Regeneration
Solubility
Solvation
Sustainable Development
Thermodynamic properties
Ionic liquids
Cellulose I
Cellulose II
Hydrogen peroxide
Morphology
Polymorphism
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Summary:The main objective of this work is to present a comprehensive analysis of the morphology, topography, and thermal behavior of modified cellulose as a function of solvation temperature, ionic liquid type, and regeneration agent. Avicel microcrystalline cellulose was dissolved at two temperatures (73 °C and 100 °C) in two competing imidazolium-based ionic liquids (1-ethyl-3-methylimidazolium acetate and 1-ethyl-3-methylimidazolium bromide). Aliquots of each solvent-polymer mixture were then washed and regenerated in competing baths (D.I. water and 25% hydrogen peroxide solution). A comparative analysis of the work is that the solvation temperature and ionic liquid counterion (AcO − and Br − ) had direct relationships to polymer solubility and physicochemical properties of the cellulose samples. Also, treatment of hydrogen peroxide solution as a regenerative agent influenced crystal sizes within the samples. Partial dissolution of cellulose induced by 1-ethyl-3-methylimidazolium bromide influenced the production of unique morphological changes and thermal behaviors relative to microcrystalline cellulose and other cellulose preparations.
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-023-05258-w