PROSPECTS FOR THE SYNTHESIS OF CELLULOSE NANOCRYSTALS BASED ON LOCAL RAW MATERIALS AND THE CREATION OF HIGH-PERFORMANCE ADHESIVE COMPOSITES BASED ON THEM
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Abstract
This study investigates the synthesis of cellulose nanocrystals (CNCs) from locally sourced cotton linter using the acid hydrolysis method and evaluates their physicochemical properties. Optimal parameters for alkali treatment, bleaching, and sulfuric acid hydrolysis were determined. SEM analysis revealed the surface morphology and aggregated crystalline structure of the synthesized CNCs. FTIR spectra showed characteristic cellulose absorption bands at 3336, 2897, 1643, 1163, 1051, and 897 cm⁻¹, confirming the preservation of the main molecular structure of cellulose. According to the TGA results, the main thermal degradation occurred within the range of 220–380 °C, with a maximum degradation temperature of 326 °C, a mass loss of 70 %, and a final residue of 8 %. The obtained results demonstrate the high crystallinity and thermal stability of the synthesized CNCs and indicate their potential as promising nanofillers for the development of composite materials with enhanced mechanical, thermal, and adhesive properties after modification with various functional compounds.
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