RT Journal Article
T1 Liquid systems Based on Tetra(n-butyl)phosphonium Acetate for the Non-dissolving Pretreatment of a Microcrystalline Cellulose (Avicel PH-101)
A1 Pena, Carlos A.
A1 Puga, Alberto
A1 Metlen, Andreas
A1 Soto Campos, Ana María
A1 Rodríguez Martínez, Héctor
K1 Cellulose
K1 Ethanol
K1 Mixtures
K1 Pretreatment
K1 Solvents
AB A non-dissolving pretreatment consisting in the direct contact of cellulose and the ionic liquid tetra(n-butyl)phosphonium acetate, or its fluid mixtures with other phosphonium ionic liquids or with molecular liquids such as ethanol or DMSO, causes a reduction in the crystallinity of the popular microcrystalline cellulose-type Avicel PH-101 under mild conditions. At the same time, the degree of polymerization and the thermal stability of the pretreated Avicel remain essentially unaltered with respect to the untreated Avicel. The diminution of the crystallinity has been related to the increase of the reactivity of the pretreated Avicel samples via analysis of the kinetics of their enzymatic hydrolysis. For selected samples, this improved reactivity has been confirmed through their effective carboxymethylation under a simplified and milder reaction procedure
PB ACS Publications
SN 1525-7797
YR 2022
FD 2022
LK http://hdl.handle.net/10347/29207
UL http://hdl.handle.net/10347/29207
LA eng
NO Biomacromolecules 2022, 23, 5, 1970–1980
NO This work was supported by Xunta de Galicia through project ED431B 2020/021, co-funded by the European Regional Development Fund. A.V.P. thanks the Spanish Ministry of Science and Innovation, the Spanish Research State Agency, and the European Social Fund for a “Ramón y Cajal” contract (RYC-2017-22849)
DS Minerva
RD 23 abr 2026