Author, as appears in the article.: Pena CA; Puga AV; Metlen A; Soto A; Rodríguez H

Department: Enginyeria Química

URV's Author/s: Puga Vaca, Alberto

Keywords: crystallinity dissolution ioncell-f Ionic liquids

Abstract: 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.

Thematic Areas: Astronomia / física Biochemistry & molecular biology Bioengineering Biomaterials Biotecnología Chemistry, organic Ciência de alimentos Ciências agrárias i Ciências biológicas i Ciências biológicas ii Ciências biológicas iii Engenharias ii Engenharias iv Farmacia Interdisciplinar Materiais Materials chemistry Medicina ii Polymer science Polymers and plastics Química

licence for use: https://creativecommons.org/licenses/by/3.0/es/

Author's mail: alberto.puga@urv.cat

Author identifier: 0000-0003-4201-2635

Record's date: 2023-05-14

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://pubs.acs.org/doi/10.1021/acs.biomac.1c01683

Papper original source: Biomacromolecules. 23 (5): 1970-1980

APA: Pena CA; Puga AV; Metlen A; Soto A; Rodríguez H (2022). Liquid Systems Based on Tetra(n-butyl)phosphonium Acetate for the Non-dissolving Pretreatment of a Microcrystalline Cellulose (Avicel PH-101). Biomacromolecules, 23(5), 1970-1980. DOI: 10.1021/acs.biomac.1c01683

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Article's DOI: 10.1021/acs.biomac.1c01683

Entity: Universitat Rovira i Virgili

Journal publication year: 2022

Publication Type: Journal Publications