A simple one-step synthesis of alkylated phosphorylated cellulose fibers

A one-step procedure to obtain modified fibers containing n-decyl phosphate cellulose is proposed. The reaction was carried out at 150 & DEG;C in heterogeneous conditions with kraft pulp fibers in the presence of n-decyl monophosphate and N,N-dimethylacetamide (DMAc). The simultaneous addition of phosphorus and alkyl chain was characterized by solid-state nuclear magnetic resonance (C-13 and P-31-NMR), Fourier transform infrared spectroscopy and energy dispersive X-ray spectroscopy. The phosphorus content, estimated at 2.0%, was determined by UV-visible spectrophotometry. Results also indicated that grafted phosphate groups wear alkyl chains.

Automated summary

A one-step procedure for obtaining modified fibers containing n-decyl phosphate cellulose is proposed. The reaction was performed at 150°C in heterogeneous conditions using n-decyl monophosphate and N,N-dimethylacetamide (DMAc) in the presence of kraft pulp fibers. Characterization techniques including solid-state nuclear magnetic resonance (C-13 and P-31-NMR), Fourier transform infrared spectroscopy, and energy dispersive X-ray spectroscopy confirmed the simultaneous addition of phosphorus and alkyl chains. The phosphorus content, determined to be 2.0%, was measured using UV-visible spectrophotometry. Results also showed that the phosphate groups were grafted with alkyl chains.