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Network swelling of TEMPO-oxidized nanocellulose

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Published/Copyright: June 15, 2014
Holzforschung
From the journal Holzforschung Volume 69 Issue 2

Abstract:

This study examines the swelling of TEMPO-oxidized nanofibrillated cellulose (NFCTEMPO, shortly NFC) on both the particle and interparticle levels. The sum of the intraparticle and interparticle swelling is referred to as the network swelling. A centrifugal method, based on a modification of the water retention value test, was used to measure the network swelling of NFC, a pigment, and some pulp fibers. It was found that the network swelling of NFC is highly dependent on its concentration within a fiber matrix. The particle swelling of NFC and pulp fibers was analyzed by differential scanning calorimetry (DSC) and solute exclusion. The counterion for the NFC varied among the Na+, H+, and Ca2+ forms. The counterion has a very large effect on the particle and network swelling of NFC, with Ca2+ giving the lowest swelling and Na+ the highest swelling. An industrially feasible method for changing the counterion of NFC from the nominal Na+ to the Ca2+ form, and thus improving dewatering properties, is given.

Keywords: counterion; dewatering; nanocellulose (NFC); TEMPO; swelling
Corresponding author: Thad C. Maloney, Department of Forest Products Technology, Aalto University, Vuorimiehentie 1, Espoo, Finland, e-mail:

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Received: 2014-1-17
Accepted: 2014-5-26
Published Online: 2014-6-15
Published in Print: 2015-2-1

©2015 by De Gruyter

Articles in the same Issue

  1. Frontmatter
  2. Original Article
  3. Fractionation of lignosulfonates: comparison of ultrafiltration and ethanol solubility to obtain a set of fractions with distinct properties
  4. The molecular properties and carbohydrate content of lignins precipitated from black liquor
  5. Degradation of chemically modified Scots pine (Pinus sylvestris L.) with Fenton reagent
  6. Cloning and functional characterization of a monoterpene synthase gene from Eleutherococcus trifoliatus
  7. Novel hydrophobization of wood by epoxidized linseed oil. Part 1. Process description and anti-swelling efficiency of the treated wood
  8. Novel hydrophobization of wood by epoxidized linseed oil. Part 2. Characterization by FTIR spectroscopy and SEM, and determination of mechanical properties and field test performance
  9. Changes of wettability of medium density fiberboard (MDF) treated with He-DBD plasma
  10. Surface modification of poplar veneer by means of radio frequency oxygen plasma (RF-OP) to improve interfacial adhesion with urea-formaldehyde resin
  11. Thermal and mechanical properties of urea-formaldehyde (UF) resin combined with multiwalled carbon nanotubes (MWCNT) as nanofiller and fiberboards prepared by UF-MWCNT
  12. Network swelling of TEMPO-oxidized nanocellulose
  13. Enhancement of mechanical properties of composites made of calcium carbonate modified bamboo fibers and polypropylene
  14. Material pocket dynamic mechanical analysis: a novel tool to study thermal transition in wood fibers plasticized by an ionic liquid (IL)
  15. Modeling temperature effect on dynamic modulus of elasticity of red pine (Pinus resinosa) in frozen and non-frozen states
  16. Effects of sanding parameters on sanding force and normal force in sanding wood-based panels
  17. Short Note
  18. Optimization study on acid hydrolysis of hardwood-derived hemicellulosic extract for alcohol fermentation using response surface methodology
https://doi.org/10.1515/hf-2014-0013
Keywords for this article
counterion; dewatering; nanocellulose (NFC); TEMPO; swelling

Articles in the same Issue

  1. Frontmatter
  2. Original Article
  3. Fractionation of lignosulfonates: comparison of ultrafiltration and ethanol solubility to obtain a set of fractions with distinct properties
  4. The molecular properties and carbohydrate content of lignins precipitated from black liquor
  5. Degradation of chemically modified Scots pine (Pinus sylvestris L.) with Fenton reagent
  6. Cloning and functional characterization of a monoterpene synthase gene from Eleutherococcus trifoliatus
  7. Novel hydrophobization of wood by epoxidized linseed oil. Part 1. Process description and anti-swelling efficiency of the treated wood
  8. Novel hydrophobization of wood by epoxidized linseed oil. Part 2. Characterization by FTIR spectroscopy and SEM, and determination of mechanical properties and field test performance
  9. Changes of wettability of medium density fiberboard (MDF) treated with He-DBD plasma
  10. Surface modification of poplar veneer by means of radio frequency oxygen plasma (RF-OP) to improve interfacial adhesion with urea-formaldehyde resin
  11. Thermal and mechanical properties of urea-formaldehyde (UF) resin combined with multiwalled carbon nanotubes (MWCNT) as nanofiller and fiberboards prepared by UF-MWCNT
  12. Network swelling of TEMPO-oxidized nanocellulose
  13. Enhancement of mechanical properties of composites made of calcium carbonate modified bamboo fibers and polypropylene
  14. Material pocket dynamic mechanical analysis: a novel tool to study thermal transition in wood fibers plasticized by an ionic liquid (IL)
  15. Modeling temperature effect on dynamic modulus of elasticity of red pine (Pinus resinosa) in frozen and non-frozen states
  16. Effects of sanding parameters on sanding force and normal force in sanding wood-based panels
  17. Short Note
  18. Optimization study on acid hydrolysis of hardwood-derived hemicellulosic extract for alcohol fermentation using response surface methodology
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