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Article Dans Une Revue Cellulose Année : 2023

Quantitative analysis of the formation of monodisperse cello-oligomers obtained by phosphoric acid hydrolysis

Noriyuki Isobe
Yuko Ono
  • Fonction : Auteur
Denis Roux
Akira Isogai

Résumé

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.
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Dates et versions

hal-04177453 , version 1 (04-08-2023)

Identifiants

Citer

Noriyuki Isobe, Yuko Ono, Yoshiharu Nishiyama, Denis Roux, Akira Isogai. Quantitative analysis of the formation of monodisperse cello-oligomers obtained by phosphoric acid hydrolysis. Cellulose, 2023, 30, pp.8235-8243. ⟨10.1007/s10570-023-05415-1⟩. ⟨hal-04177453⟩
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