Skip to Main content Skip to Navigation
Journal articles

Morphology of cellulose objects regenerated from cellulose-N-methylmorpholine N-oxide-water solutions

Abstract : The precipitation in aqueous media of cellulose from solutions in N-methylmorpholine N-oxide (NMMO) hydrates is an important stage in the process of manufacturing of fibres, films and other cellulose objects. It is responsible for the formation of the structure of the regenerated object and their morphological characteristics significantly influence the properties of the final products. Regeneration of rather large cellulose objects was observed in situ by optical microscopy. It was found that all regenerated objects present an asymmetric structure composed of a dense skin surrounding a sub-layer characterised by the presence of finger-like voids. The porous texture of the cellulose parts between these voids is typical of the one obtained by spinodal decomposition. The morphologies of regenerated cellulose samples are described as a function of various parameters, initial cellulose solutions and composition and temperature of the aqueous regeneration bath. A mechanism of the structure formation during regeneration is proposed.
Document type :
Journal articles
Complete list of metadata

Cited literature [26 references]  Display  Hide  Download
Contributor : Magalie Prudon Connect in order to contact the contributor
Submitted on : Monday, December 10, 2012 - 5:07:35 PM
Last modification on : Wednesday, November 17, 2021 - 12:28:05 PM
Long-term archiving on: : Monday, March 11, 2013 - 11:20:17 AM


Files produced by the author(s)



Olga Biganska, Patrick Navard. Morphology of cellulose objects regenerated from cellulose-N-methylmorpholine N-oxide-water solutions. Cellulose, Springer Verlag, 2009, 16 (2), pp.Pages 179-188. ⟨10.1007/s10570-008-9256-y⟩. ⟨hal-00508367⟩



Record views


Files downloads