Tofănică, Bogdan-MarianCallone, EmanuelaUngureanu, ElenaUngureanu, Ovidiu CPopa, Valentin I.2026-07-102026-07-102025-04-11https://www.mdpi.com/2073-4360/17/8/1032https://repository.iuls.ro/handle/20.500.12811/6788Solid state Cross-Polarization/Magic-Angle-Spinning 13C CP/MAS Nuclear Magnetic Resonance (NMR) spectra were obtained for cellulose and α-cellulose isolated from rapeseed stalks. This study provides the first characterization of the rapeseed stalk cellulose, revealing that native cellulose occurs as cellulose I allomorph, while α-cellulose exhibits distinct crystalline structures similar to those found in cellulose II. Additionally, Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscopy (SEM), and Energy-Dispersive X-ray Microanalysis (EDX) were employed to further investigate and unveil the structural properties of cellulose extracted from rapeseed stalks. These complementary techniques offered a more comprehensive understanding of the cellulose morphology, crystallinity, and chemical composition, providing valuable insights into the potential utilization of rapeseed stalks as a renewable biomass resource for various industrial applications.enCC BY 4.0https://creativecommons.org/licenses/by/4.0/rapeseed stalkscelluloseα-celluloseCP/MAS 13C NMRFTIRArticle2073-4360https://doi.org/10.3390/polym17081032