Journal
GREEN CHEMISTRY
Volume 16, Issue 4, Pages 1941-1946Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3gc41994k
Keywords
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Funding
- Bundesministerium fur Bildung und Forschung (BMBF)
- Projektrager Julich [03WKP16A]
- Finnish Funding Agency for Technology and Innovation (Tekes)
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The tosylation of cellulose in the eco-friendly solvent NaOH-urea in the presence of the nonionic surfactant polyethylene glycol alkyl-(C-11-C-15) ether (Imbentin) yields well soluble p-toluenesulfonic acid esters of cellulose (tosyl cellulose). The influence of reaction time, temperature, and molar ratio on the degree of substitution (DS) was studied. The products were characterized by means of NMR- and FTIR-spectroscopy, elemental analysis and size exclusion chromatography. Moreover, 6-deoxy-6-azido-, 6-deoxy-6-(omega-aminoethyl)amino-, and 6-deoxy-6-thiosulfate cellulose could be prepared by nucleophilic displacement (S-N) of the tosyl groups.
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