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Structure of cellulose and microcrystalline cellulose from various wood species, cotton and flax studied by X-ray scattering

Leppanen, Kirsi; Andersson, Seppo; Torkkeli, Mika; Knaapila, Matti LU ; Kotelnikova, Nina and Serimaa, Ritva (2009) In Cellulose 16(6). p.999-1015
Abstract
The structure of microcrystalline cellulose (MCC) made by mild acid hydrolysis from cotton linter, flax fibres and sulphite or kraft cooked wood pulp was studied and compared with the structure of the starting materials. Crystallinities and the length and the width of the cellulose crystallites were determined by wide-angle X-ray scattering and the packing and the cross-sectional shape of the microfibrils were determined by small-angle X-ray scattering. The morphological differences were studied by scanning electron microscopy. A model for the changes in microfibrillar structure between native materials, pulp and MCC samples was proposed. The results indicated that from softwood or hardwood pulp, flax cellulose and cotton linter MCC with... (More)
The structure of microcrystalline cellulose (MCC) made by mild acid hydrolysis from cotton linter, flax fibres and sulphite or kraft cooked wood pulp was studied and compared with the structure of the starting materials. Crystallinities and the length and the width of the cellulose crystallites were determined by wide-angle X-ray scattering and the packing and the cross-sectional shape of the microfibrils were determined by small-angle X-ray scattering. The morphological differences were studied by scanning electron microscopy. A model for the changes in microfibrillar structure between native materials, pulp and MCC samples was proposed. The results indicated that from softwood or hardwood pulp, flax cellulose and cotton linter MCC with very similar nanostructures were obtained with small changes in reaction conditions. The crystallinity of MCC samples was 54-65%. The width and the length of the cellulose crystallites increased when MCC was made. For example, between cotton and cotton MCC the width increased from 7.1 nm to 8.8 nm and the length increased from 17.7 nm to 30.4 nm. However, the longest crystallites were found in native spruce wood (35-36 nm). (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
WAXS, SAXS, Microcrystalline, Cellulose
in
Cellulose
volume
16
issue
6
pages
999 - 1015
publisher
Springer
external identifiers
  • wos:000272373600006
  • scopus:72849132815
ISSN
0969-0239
DOI
10.1007/s10570-009-9298-9
language
English
LU publication?
yes
id
90a68291-1578-4c51-9601-d9d26b16d5f7 (old id 1533593)
date added to LUP
2010-01-27 16:19:35
date last changed
2017-12-10 03:58:11
@article{90a68291-1578-4c51-9601-d9d26b16d5f7,
  abstract     = {The structure of microcrystalline cellulose (MCC) made by mild acid hydrolysis from cotton linter, flax fibres and sulphite or kraft cooked wood pulp was studied and compared with the structure of the starting materials. Crystallinities and the length and the width of the cellulose crystallites were determined by wide-angle X-ray scattering and the packing and the cross-sectional shape of the microfibrils were determined by small-angle X-ray scattering. The morphological differences were studied by scanning electron microscopy. A model for the changes in microfibrillar structure between native materials, pulp and MCC samples was proposed. The results indicated that from softwood or hardwood pulp, flax cellulose and cotton linter MCC with very similar nanostructures were obtained with small changes in reaction conditions. The crystallinity of MCC samples was 54-65%. The width and the length of the cellulose crystallites increased when MCC was made. For example, between cotton and cotton MCC the width increased from 7.1 nm to 8.8 nm and the length increased from 17.7 nm to 30.4 nm. However, the longest crystallites were found in native spruce wood (35-36 nm).},
  author       = {Leppanen, Kirsi and Andersson, Seppo and Torkkeli, Mika and Knaapila, Matti and Kotelnikova, Nina and Serimaa, Ritva},
  issn         = {0969-0239},
  keyword      = {WAXS,SAXS,Microcrystalline,Cellulose},
  language     = {eng},
  number       = {6},
  pages        = {999--1015},
  publisher    = {Springer},
  series       = {Cellulose},
  title        = {Structure of cellulose and microcrystalline cellulose from various wood species, cotton and flax studied by X-ray scattering},
  url          = {http://dx.doi.org/10.1007/s10570-009-9298-9},
  volume       = {16},
  year         = {2009},
}