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Chemical Valorization of Cellulose: Towards the Production of Functionalized Cellulose, Oligomers and Monomers

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Green Chemistry".

Deadline for manuscript submissions: closed (31 December 2020) | Viewed by 3066

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Guest Editor
EDYTEM, University Savoie Mont Blanc, CNRS, 73000 Chambéry, France
Interests: green chemistry; sonochemistry; sonophotochemistry; catalysis; organic chemistry; eco-extraction; ultrasound; ionic liquids; supercritical fluids; microwaves; oxidation reactions; biomass conversion; cellulose processing; lignin valorization; waste valorization; sustainable chemical processes, circular economy
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Special Issue Information

Dear Colleagues,

Cellulose is the most abundant organic polymer available on Earth. Produced by Nature at a scale estimated at 50–100 billion tons per year, cellulose is employed in many applications such as personal care, textiles, paper, packaging, heat insulators, nanocomposites and explosives, fibers, and others. Faced with the challenges of global warming, the production of bio-based-chemicals, materials and fuels from cellulose has become a research challenge of growing interest. The renewability, relatively low price, abundance, and non-edibility of cellulose represent important aspects for the implementation of sustainable processes in chemistry. Among valuable macromolecules, chemicals and fuels which can be potentially produced from cellulose, one can mention ethanol, cellodextrins, carboxy- or hydroxyethyl cellulose, cellulose acetate, furanic derivatives, carboxylic acids, hexitols, hydrocarbons, caprolactam, sorbitol, γ-valerolactone, alkylglycosides, etc. The chemical modifications of cellulose may be employed to obtain functionalized cellulose or oligomers for novel applications. 

 

This Special Issue is devoted to provide an overview of recent developments in the chemical valorization of cellulose in order to produce functionalized cellulose, oligomers or monomers. The use of green chemistry aspects should be favored in the proposed development

Dr. Gregory Chatel
Guest Editor

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Keywords

  • Cellulose
  • Monomers
  • Plateform molecules
  • Biomass
  • Chemical valorization

Published Papers (1 paper)

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Research

14 pages, 2441 KiB  
Article
A Simplified Method of Synthesis to Obtain Zwitterionic Cellulose under Mild Conditions with Active Ionic Moieties
by Nadia B. Haro-Mares, Juan C. Meza-Contreras, Fernando A. López-Dellamary Toral, Ricardo González-Cruz, José A. Silva-Guzmán and Ricardo Manríquez-González
Molecules 2020, 25(13), 3065; https://doi.org/10.3390/molecules25133065 - 05 Jul 2020
Cited by 8 | Viewed by 2662
Abstract
A simplified procedure to synthesize zwitterionic cellulose by means of N-protected aspartic anhydride under mild conditions was developed. The preparation of modified cellulose samples was carried out under heterogeneous, aqueous conditions by reacting NH4OH-activated cellulose with aspartic anhydrides N-protected with trifluoroacetyl [...] Read more.
A simplified procedure to synthesize zwitterionic cellulose by means of N-protected aspartic anhydride under mild conditions was developed. The preparation of modified cellulose samples was carried out under heterogeneous, aqueous conditions by reacting NH4OH-activated cellulose with aspartic anhydrides N-protected with trifluoroacetyl (TFAc) and carbobenzyloxy (Cbz). Modified cellulose samples Cel-Asp-N-TFAc and Cel-Asp-N-Cbz were characterized by Fourier Transform Infrared (FTIR) and 13C solid state Nuclear Magnetic Resonance (NMR) spectroscopy. The functionalization degree of each cellulose sample was determined by the 13C NMR signal integration values corresponding to the cellulose C1 vs. the Cα of the aspartate residue and corroborated by elemental analysis. In agreement, both analytical methods averaged a grafting degree of 20% for Cel-Asp-N-TFAc and 16% for Cel-Asp-N-Cbz. Conveniently, Cel-Asp-N-TFAc was concomitantly partially N-deprotected (65%) as determined by the ninhydrin method. The zwitterion character of this sample was confirmed by a potentiometric titration curve and the availability of these amino acid residues on the cellulose was inspected by adsorption kinetics method with a 100 mg L−1 cotton blue dye solution. In addition, the synthesis reported in the present work involves environmentally related advantages over previous methodologies developed in our group concerning to zwitterionic cellulose preparation. Full article
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