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Updated: Jul 16, 2026
10:42
Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
Published on: August 10, 2016
Acid-Based Deep Eutectic Solvents for Structural Modification of Sulphite Pulp Cellulose: A Potential Route Toward
María Guadalupe Morán-Aguilar1, Iván Costa-Trigo2, José Manuel Domínguez3
1Advanced Biomaterials and Nanotechnology (BIMATEC), Department of Chemical and Agricultural Engineering, and Agrifood Technology, Polytechnic School, University of Girona, Maria Aurèlia Capmany 61, 17003 Girona, Spain.
Polymers
|July 15, 2026
Summary
Acidic deep eutectic solvents (DES) offer a green method to modify cellulose for sustainable packaging. This approach enhances cellulose properties but reduces enzymatic digestibility due to increased crystallinity.
Area of Science:
- Materials Science
- Green Chemistry
- Biotechnology
Background:
- Growing demand for sustainable packaging drives interest in cellulose-based materials.
- Conventional cellulose modification uses harsh chemicals, creating environmental concerns.
- Developing eco-friendly cellulose modification methods is crucial for sustainable applications.
Purpose of the Study:
- To develop an efficient and green strategy for cellulose modification using acid-based deep eutectic solvents (DES).
- To investigate the structural and physicochemical changes in cellulose after DES pretreatment.
- To evaluate the potential of DES-modified cellulose in sustainable packaging.
Main Methods:
- Cellulose modification using choline chloride combined with lactic, acetic, or citric acid as DES.
- Pretreatment under mild conditions (110 °C, 4 h).
- Analysis of structural changes using FTIR, XRD, and morphological studies; enzymatic digestibility assessment.
Main Results:
- DES pretreatment significantly reduced glucan content and increased relative cellulose crystallinity.
- FTIR, XRD, and morphology analyses confirmed disruption of hydrogen bonding and enhanced fibrillation.
- Enzymatic digestibility decreased due to increased crystalline domains, despite structural improvements.
Conclusions:
- Acidic DES provide a sustainable and recyclable medium for cellulose modification.
- DES-treated cellulose exhibits modulated structure and enhanced physicochemical properties.
- DES-modified cellulose shows potential as a reinforcement for biodegradable packaging and bioplastics.
Keywords:
DES-modified sulphite pulpbiomaterial reinforcementcellulose modificationdeep eutectic solventslow-impact pretreatmentsulphite pulp pretreatmentsustainable cellulose processingMore Related Videos
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