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Article Dans Une Revue Applied Surface Science Année : 2021

Oligocellulose from acid hydrolysis: A revisit

Feng Jiang
Xin Zhang
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Wonseok Hwang
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Robert Briber
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Howard Wang
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Résumé

The classical method of producing cellulose oligomers through hydrolysis of microcrystalline cellulose (MCC) in phosphoric acid has been re-examined. Hydrolysis products are fractionated by precipitation to yield two types of cellulose oligomers with different average degrees of polymerization (DP). The number- and weight-averaged molecular weights of the lower DP fraction are 1339 g/mol and 1388 g/mol respectively corresponding to a polydispersity index of 1.04. The cellulose oligomer forms type-II crystal, and can be dissolved in both alkaline aqueous solutions and dimethyl sulfoxide. The X-ray and neutron small angle scattering of the cellulose oligomers in solution can be described as rigid slabs.
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Dates et versions

hal-02951284 , version 1 (12-10-2021)

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Feng Jiang, Xin Zhang, Wonseok Hwang, Yoshiharu Nishiyama, Robert Briber, et al.. Oligocellulose from acid hydrolysis: A revisit. Applied Surface Science, 2021, 537, pp.147783. ⟨10.1016/j.apsusc.2020.147783⟩. ⟨hal-02951284⟩
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