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- Title
Quantitative analysis of the formation of monodisperse cello-oligomers obtained by phosphoric acid hydrolysis.
- Authors
Isobe, Noriyuki; Ono, Yuko; Nishiyama, Yoshiharu; Roux, Denis; Isogai, Akira
- Abstract
Hydrolysis of cellulose in concentrated phosphoric acid is known to give two distinctive mono-disperse cello-oligomers: the degree of polymerization (DP) of 7 and 15. To understand the formation mechanism of monodisperse cello-oligomers, the transition of DP during phosphoric hydrolysis was monitored by size-exclusion chromatography combined with multiangle laser-light scattering analyses (SEC/MALLS). The obtained results suggested that not the hydrolysis at a specific length but random hydrolysis was likely. The rate of hydrolysis slowed down when the DP reached around 40, and the pool of cello-oligomers appeared at the incubation of 35 days. Then, the mono-disperse cello-oligomers were recovered from the pool of cello-oligomers by fractionation based on the solubility difference.
- Subjects
PHOSPHORIC acid; HYDROLYSIS; MONODISPERSE colloids; DEGREE of polymerization; QUANTITATIVE research; OLIGOMERS
- Publication
Cellulose, 2023, Vol 30, Issue 13, p8235
- ISSN
0969-0239
- Publication type
Article
- DOI
10.1007/s10570-023-05415-1