Interaction between Cellulose and Xylan: An Atomic Force Microscope and Quartz Crystal Microbalance Study

Paananen, Arja; Österberg, Björn; Rutland, Mark W.; Tammelin, Tekla; Saarinen, Timo; Tappura, Kirsi; Stenius, P.

doi:10.1021/bk-2004-0864.ch018

Cited by 40 publications

(43 citation statements)

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“…One major advantage of using xylan in pulp fibre modification is the inherent affinity of xylan to cellulose, yielding an irreversible adsorption (Paananen et al 2004). However, the level of xylan-cellulose interaction has been shown to depend on xylan molecular structure (e.g.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of cationized barley husk xylan on kraft pulp fibres: influence of degree of cationization on adsorption characteristics

2009

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A water-soluble (glucurono)arabinoxylan (GAX) was isolated from barley husk using chlorite delignification followed by alkaline extraction and enzymatic purification of the extract. The isolated xylan was shown to adsorb on bleached softwood kraft fibres, but the degree of adsorption was rather low under the applied conditions. This can be explained by the inhibited adsorption of GAX molecules with a relatively high degree of arabinofuranosyl substitution, as indicated by iodine complexation and neutral carbohydrate analysis of the non-adsorbing xylans. In order to increase the driving force for adsorption of the more highly substituted GAX, the xylan was cationized through a reaction in an aqueous alkaline medium with 2,3-epoxypropyltrimethylammonium chloride (EPTMAC). The chemical modification of xylan was confirmed by using 1 H-13 C HSQC (Heteronuclear Single Quantum Coherence) NMR, and was quantified by using elemental analysis. The GAX cationization, which introduced cationic charge densities ranging from 110 to 740 leq/g, was shown to increase the rate and magnitude of adsorption extensively, due to the induced electrostatic interaction between the anionic fibres and the cationic xylan. Similar to non-modified xylan, cationic xylan possessed a non-electrostatic cellulose surface affinity, as shown by adsorption at high ionic-strength and on esterified (carboxyl-free) pulp fibres.

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Section: Introductionmentioning

confidence: 99%

Adsorption of cationized barley husk xylan on kraft pulp fibres: influence of degree of cationization on adsorption characteristics

2009

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“…In a recent review (Kontturi et al 2006) cellulose model surfaces for different purposes were discussed. QCM-D has been successfully used together with cellulose model surfaces to study the adsorption of wood components (Paananen et al 2004;Tammelin et al 2007) and cationic polyelectrolytes Salmi et al 2003) on cellulose. In addition, QCM-D has been utilized to study swelling of cellulose model surfaces (Fält et al 2003;Tammelin et al 2006) and dynamics of enzymatic activity on cellulose (Jeong et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Cellulose nanofibrils—adsorption with poly(amideamine) epichlorohydrin studied by QCM-D and application as a paper strength additive

Ahola¹,

Österberg²,

Laine³

2007

Cellulose

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115

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In this paper cellulose nanofibrils were used together with a cationic polylelectrolyte, poly(amideamine) epichlorohydrin (PAE), to enhance the wet and the dry strength of paper. The adsorption of nanofibrils and PAE on cellulose model surfaces was studied using quartz crystal microbalance with dissipation (QCM-D) and atomic force microscopy (AFM). The differences in fibril and polyelectrolyte adding strategies onto cellulose fibres were studied by comparing layer-structures and nano-aggregates formed by the nanofibrils and PAE. The results showed that when PAE was first adsorbed on the model fibre surface a uniform and viscous layer of nanofibrils could be adsorbed. When PAE and nanofibrils were adsorbed as cationic aggregates a non-uniform and more rigid layer was adsorbed. Paper sheets were prepared using both the bi-layer and nano-aggregate adding strategy of the nanofibrils and PAE. When PAE and nanofibrils were adsorbed on pulp fibres as a bi-layer system significant increase in both wet and dry tensile strength of paper could be achieved even at low added amounts of PAE. When the substances were added as nano-aggregates the improvements in paper strength properties were not as significant. Bulk and surface nitrogen content analyses of the paper samples showed that the adding strategy does not affect the total adsorbed amount of PAE but it has a strong effect on distribution of substances in the paper matrix which has a crucial effect on paper wet and dry strength development.

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“…The reasons commonly used to describe the interactions between xylans and cellulose include co-crystallization (Meller 1965) hydrogen bonding (Buchert et al 1995), and aggregation of the xylans in solution prior to adsorption (Linder et al 2003;Westbye et al 2006). However, direct comparisons with the present study are difficult as research has shown the interactions are dependent upon pH and salt content (Paananen et al 2004;Danielsson and Lindström 2005;Ribe et al 2010a, b), degree of substitution by glucoronic acid, acetyl groups and arabinose (Kabel et al 2007), hydrophobic substituents , and lignin as lignin-carbohydrate complexes (Westbye et al 2007, Gradwell et al 2004, Winter et al 2006. Moreover, the adsorption is also influenced by characteristics of the substrate such as porosity, surface area, crystallinity and chemical composition (Linder and Gatenholm 2004).…”

Section: Resultsmentioning

confidence: 67%

Properties of spruce sulfite pulp and birch kraft pulp after sorption of cationic birch xylan

Schwikal¹,

Heinze²,

Saake

et al. 2011

Cellulose

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In this study, correlations between the charge density of adsorbed cationic xylans and the mechanical properties of selected pulps are discussed. Hand-sheet experiments were carried out using birch sulfate pulp and spruce sulfite pulp after the adsorption of 2-hydroxypropyl-trimethylammonium-4-O-methylglucuronoxylans (HPMAGXs) with different molar degrees of substitution (MS) in the range of 0.06-0.19. The charge density of the HPMAGX in water was determined by polyelectrolyte titration. Properties such as the tensile and burst index increased after HPMAGX addition and showed an optimum depending on the MS, which was 0.1 for both pulps. Other properties like the tear-index or the specific volume changed depending on the pulp. Beating experiments were also performed and showed an increasing tensile index of birch kraft pulp in the range of 53.7 to 85.7 N m g -1 for a beating time of 10 min. The adsorption of HPMAGXs with different MS onto thiolbased self-assembled monolayers (SAMs) on gold and regenerated cellulose surfaces were studied using surface plasmon resonance (SPR). Electrostatic interactions were found to be the most important factors affecting HPMAGX adsorption, and a strong correlation between HPMAGX adsorption onto carboxylterminated SAMs (SAM-COOH) and paper strength when HPMAGX was used as a papermaking additive was observed.

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Interaction between Cellulose and Xylan: An Atomic Force Microscope and Quartz Crystal Microbalance Study

Cited by 40 publications

References 0 publications

Adsorption of cationized barley husk xylan on kraft pulp fibres: influence of degree of cationization on adsorption characteristics

Adsorption of cationized barley husk xylan on kraft pulp fibres: influence of degree of cationization on adsorption characteristics

Cellulose nanofibrils—adsorption with poly(amideamine) epichlorohydrin studied by QCM-D and application as a paper strength additive

Properties of spruce sulfite pulp and birch kraft pulp after sorption of cationic birch xylan

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