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Article
2026
Aqueous Kabachnik -Fields synthesis of HMF-functionalized chitosan for thermally-stable LBL coatings on cotton fabrics
Aqueous Kabachnik -Fields synthesis of HMF-functionalized chitosan for thermally-stable LBL coatings on cotton fabrics
Abstract (English)
This study explores the Kabachnik-Fields (KF) reaction between chitosan, diethyl phosphite (DEP) and biorefinery-derived 5-hydroxymethylfurfural (HMF) to produce chitosan-diethyl phosphite-HMF (CDH) derivatives for thermally-stable coatings. The effect of reaction temperature on the structure, phosphorus incorporation and thermal properties of the CDH-RT (room temperature), CDH-60 (60 °C), CDH-80 (80 °C) and CDH-100 (100 °C) products was investigated using FTIR, elemental analysis, ICPOES and thermogravimetric analysis (TGA) in air. KF modification increased chitosan's initial thermal stability (T₅: 65 to 84-104 °C), promoted early char formation through an intumescent mechanism and enhanced residue stability at 930 °C (max. 32.4 wt %). To assess LBL coating compatibility, CDH products were applied to cotton fabrics (3 bilayers with phytic acid). Mass gain depended on KF temperature, with cotton-CDH-60/PA showing optimal incorporation (34.4 %). Synergy factors calculated from normalized TGA residues confirmed positive char-promoting effects for all CDH formulations (cotton-CDH-60/PA: 226.6 %). These results establish HMF-chitosan aminophosphonates as a promising platform for sustainable, thermally-protective cotton fabric coatings.
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Carbohydrate polymer technologies and applications, 13 (2026), 101107.
https://doi.org/10.1016/j.carpta.2026.101107.
ISSN: 2666-8939
Amsterdam : Elsevier
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Checa, M., Arauzo, P. J., & Kruse, A. (2026). Aqueous Kabachnik -Fields synthesis of HMF-functionalized chitosan for thermally-stable LBL coatings on cotton fabrics. Carbohydrate polymer technologies and applications, 13. https://doi.org/10.1016/j.carpta.2026.101107
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670 Manufacturing
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Sustainable Development Goals
