Network swelling of TEMPO-oxidized nanocellulose
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.
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©2015 by De Gruyter
Artikel in diesem Heft
- Frontmatter
- Original Article
- Fractionation of lignosulfonates: comparison of ultrafiltration and ethanol solubility to obtain a set of fractions with distinct properties
- The molecular properties and carbohydrate content of lignins precipitated from black liquor
- Degradation of chemically modified Scots pine (Pinus sylvestris L.) with Fenton reagent
- Cloning and functional characterization of a monoterpene synthase gene from Eleutherococcus trifoliatus
- Novel hydrophobization of wood by epoxidized linseed oil. Part 1. Process description and anti-swelling efficiency of the treated wood
- 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
- Changes of wettability of medium density fiberboard (MDF) treated with He-DBD plasma
- Surface modification of poplar veneer by means of radio frequency oxygen plasma (RF-OP) to improve interfacial adhesion with urea-formaldehyde resin
- Thermal and mechanical properties of urea-formaldehyde (UF) resin combined with multiwalled carbon nanotubes (MWCNT) as nanofiller and fiberboards prepared by UF-MWCNT
- Network swelling of TEMPO-oxidized nanocellulose
- Enhancement of mechanical properties of composites made of calcium carbonate modified bamboo fibers and polypropylene
- Material pocket dynamic mechanical analysis: a novel tool to study thermal transition in wood fibers plasticized by an ionic liquid (IL)
- Modeling temperature effect on dynamic modulus of elasticity of red pine (Pinus resinosa) in frozen and non-frozen states
- Effects of sanding parameters on sanding force and normal force in sanding wood-based panels
- Short Note
- Optimization study on acid hydrolysis of hardwood-derived hemicellulosic extract for alcohol fermentation using response surface methodology
Artikel in diesem Heft
- Frontmatter
- Original Article
- Fractionation of lignosulfonates: comparison of ultrafiltration and ethanol solubility to obtain a set of fractions with distinct properties
- The molecular properties and carbohydrate content of lignins precipitated from black liquor
- Degradation of chemically modified Scots pine (Pinus sylvestris L.) with Fenton reagent
- Cloning and functional characterization of a monoterpene synthase gene from Eleutherococcus trifoliatus
- Novel hydrophobization of wood by epoxidized linseed oil. Part 1. Process description and anti-swelling efficiency of the treated wood
- 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
- Changes of wettability of medium density fiberboard (MDF) treated with He-DBD plasma
- Surface modification of poplar veneer by means of radio frequency oxygen plasma (RF-OP) to improve interfacial adhesion with urea-formaldehyde resin
- Thermal and mechanical properties of urea-formaldehyde (UF) resin combined with multiwalled carbon nanotubes (MWCNT) as nanofiller and fiberboards prepared by UF-MWCNT
- Network swelling of TEMPO-oxidized nanocellulose
- Enhancement of mechanical properties of composites made of calcium carbonate modified bamboo fibers and polypropylene
- Material pocket dynamic mechanical analysis: a novel tool to study thermal transition in wood fibers plasticized by an ionic liquid (IL)
- Modeling temperature effect on dynamic modulus of elasticity of red pine (Pinus resinosa) in frozen and non-frozen states
- Effects of sanding parameters on sanding force and normal force in sanding wood-based panels
- Short Note
- Optimization study on acid hydrolysis of hardwood-derived hemicellulosic extract for alcohol fermentation using response surface methodology
