Nano-cellulosic materials: The impact of water on their dissolution in DMAc/LiCl
Artikel i vetenskaplig tidskrift, 2013

The dissolution behaviour of disassociated cellulosic materials in N,N-dimethylacetamide/lithium chloride (DMAc/LiCl) was investigated. The parameters monitored were chromatographic elution profiles and recovered mass by means of gel permeation chromatography (GPC) with RI detection. In order to elucidate the impact of the disassembly on cellulosic fibres, comparative studies were performed with the non-disassociated cellulose counterparts. The importance of the presence of water was addressed by Karl Fischer titration and solvent exchange experiments. Morphological changes during the dissolution process were studied by scanning electron microscopy (SEM). Dissolution of fibrillated cellulosic materials is impeded compared to the non-fibrillated material. This is a consequence of the high-surface-area fibrils prone to retain high amounts of water. Dissolution behaviour of nano-crystalline cellulosic materials appeared to be source-dependent. Due to the absence of entangled networks, these materials retain only water bound at the surface of the nano-crystallites, indicative of both the exposed surface area and solubility. The small cellulose nano-particles extracted from dissolving pulp show lower solubility compared to the large NCC particles from cotton.

Fibrillated cellulose

Water content

Gel permeation chromatography


Dissolution kinetics

Fibre morphology


Merima Hasani

Chalmers, Kemi- och bioteknik, Skogsindustriell kemiteknik

Wallenberg Wood Science Center (WWSC)

U. Henniges

Unknown organization

Alexander Idström

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

SuMo Biomaterials

Lars Nordstierna

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Gunnar Westman

Wallenberg Wood Science Center (WWSC)

Chalmers, Kemi- och bioteknik, Organisk kemi

T. Rosenau

Unknown organization

A. Potthast

Unknown organization

Carbohydrate Polymers

0144-8617 (ISSN)

Vol. 98 2 1565-1572


Fysikalisk kemi