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Changes of cellulose fiber wall structure during drying investigated using NMR self-diffusion and relaxation experiments

Topgaard, Daniel LU and Söderman, Olle LU (2002) In Cellulose 9(2). p.139-147
Abstract
The self-diffusion of water sorbed in cellulose fibers was investigated by means of NMR during slow drying in order to follow changes in the cellulose porous structure. In pulp fibers pores with at least one dimension on the mum scale were observed at high amounts of sorbed water and nm-scale pores at low amounts. Beating affected the mum-scale pores. Regenerated cellulose fibers had nm-scale pores up to high amounts of water. Bulk water was observed as a second component with long T-2 in a CPMG experiment. The sequence of water removal for kraft pulp fibers is: (1) bulk water, (2) water in mum-scale pores and (3) water in nm-scale pores.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
water, self-diffusion, NMR, porous material
in
Cellulose
volume
9
issue
2
pages
139 - 147
publisher
Springer
external identifiers
  • wos:000177946900005
  • scopus:0036623755
ISSN
0969-0239
DOI
10.1023/A:1020158524621
language
English
LU publication?
yes
id
7c1aeac8-d792-4172-92ae-ac4a621edab8 (old id 329262)
date added to LUP
2007-10-11 07:42:20
date last changed
2017-09-10 04:24:40
@article{7c1aeac8-d792-4172-92ae-ac4a621edab8,
  abstract     = {The self-diffusion of water sorbed in cellulose fibers was investigated by means of NMR during slow drying in order to follow changes in the cellulose porous structure. In pulp fibers pores with at least one dimension on the mum scale were observed at high amounts of sorbed water and nm-scale pores at low amounts. Beating affected the mum-scale pores. Regenerated cellulose fibers had nm-scale pores up to high amounts of water. Bulk water was observed as a second component with long T-2 in a CPMG experiment. The sequence of water removal for kraft pulp fibers is: (1) bulk water, (2) water in mum-scale pores and (3) water in nm-scale pores.},
  author       = {Topgaard, Daniel and Söderman, Olle},
  issn         = {0969-0239},
  keyword      = {water,self-diffusion,NMR,porous material},
  language     = {eng},
  number       = {2},
  pages        = {139--147},
  publisher    = {Springer},
  series       = {Cellulose},
  title        = {Changes of cellulose fiber wall structure during drying investigated using NMR self-diffusion and relaxation experiments},
  url          = {http://dx.doi.org/10.1023/A:1020158524621},
  volume       = {9},
  year         = {2002},
}