Sustainable High Yield Route to Cellulose Nanocrystals from Bacterial Cellulose

Timo Pääkkönen, Panagiotis Spiliopoulos, Nonappa Nonappa, Katri S Kontturi, Paavo Penttilä, Mira Viljanen, Kirsi J. Svedström, Eero Kontturi

Research output: Contribution to journalArticleScientificpeer-review

28 Citations (Scopus)
248 Downloads (Pure)


HCl gas hydrolysis of a bacterial cellulose (BC) aerogel followed by 2,2,6,6-tetramethylpiperidine-1-oxyl radical-mediated oxidation was used to produce hydrolyzed BC with carboxylate groups, which subsequently disintegrated into a stable dispersion of cellulose nanocrystals (CNCs). The degree of polymerization was successfully reduced from 2160 to 220 with a CNC yield of >80%.
Original languageEnglish
Pages (from-to)14384−14388
Number of pages5
JournalACS Sustainable Chemistry and Engineering
Issue number17
Publication statusPublished - 16 Aug 2019
MoE publication typeA1 Journal article-refereed


  • Colloidal dispersion
  • Gaseous acid
  • Hydrolysis
  • Nanocellulose
  • TEMPO-oxidation


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