The effect of polyelectrolytes on the wet-web strenght of paper

Alinče, B.; Vanerek, Alois; Oliveira, Marcius H. de; Ven, Theo G. M. van de

doi:10.3183/npprj-2006-21-05-p653-658

Cited by 17 publications

(20 citation statements)

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“…Despite good results in dry paper, a decrease in IWWS is observed (Alince et al 2006). The explanation for these phenomena is the steric and electrostatic repulsion of fully polyacrylamide coated fibers.…”

Section: Chemical Additivesmentioning

confidence: 88%

“…Additionally, the fiber surface roughness is specifically influenced by pulp beating and the associated generation of fiber fragments and suspended fibrils. The surface roughness of the individual fibers and the associated fiber-fiber adhesion play an important role in regard to the strength in the wet paper web because they affect the capillary forces during dewatering (Alince et al 2006;Hubbe 2006;Thomson 2007). Fiber pore sizes also play an important role (Erhard et al 2010;Scallan and Tigerström 1992;Scallan 1977).…”

Section: Surface Roughness Of the Fibersmentioning

confidence: 99%

“…In addition to studies that describe the influence of beating on dewatering and strength (Berger and Schramm 2011;da Silva et al 1982;Kibblewhite 1973;Lindqvist 2013;Lindqvist et al 2011Lindqvist et al , 2012Lindström and Kolman 1982;Pikulik 1997), there is an extensive body of research papers on dewatering chemicals and the use of mineral fillers (Alince et al 2006;de Oliveira et al 2009;Esser et al 2008;Gärdlund et al 2003;Hua et al 2011;Lindqvist et al 2009;Pikulik 2000;Sutman 2011;Szeiffova and Alince 2003). Furthermore, the sheet structure and the fiber orientation is largely determined by the condition in the headbox and forming section.…”

Section: Sheet Formingmentioning

confidence: 99%

“…This leads to a high variance of measurements. Additional methods have been developed (Alince et al 2006;Andrews et al 1945;Jantunen 1985;McCallum 1957;SCAN 1981SCAN , 2005Stephens and Pearson 1970;TAPPI 1997).…”

Section: Measurement Techniquesmentioning

confidence: 99%

“…This results in increased distances between fibers with less friction force in the wet web. If the dosage is ''below full coverage, fiber flocculation occurs resulting in weak spots in the wet sheet'' (Alince et al 2006).…”

Section: Chemical Additivesmentioning

confidence: 99%

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Initial wet web strength of paper

Belle

Odermatt

2016

Cellulose

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Despite much research into and development within the complex area of the initial wet web strength of paper, no complete model has yet been developed to describe this property. This type of paper strength is the most important property to ensure an effective paper machine run. Furthermore, the process of strength development in the sheet forming and pressing portion of the process is the basis of the final paper strength. Recent investigations have focused on the surface interactions of fibers on the molecular level. There have also been several innovative findings about fiber swelling and the impact of swelling on the mechanical characteristics of fibers in wet conditions. Overall, progress obtained using new methodologies enables a deeper understanding of the mechanism of strength development. This review discusses these important areas by examining the literature and the authors' own work to obtain a better understanding of the strength development in wet paper webs. This paper highlights that the fiber morphology and the dryness of the wet web have the greatest impact on the strength of the wet web. As fiber sources and machinery are fixed, the fiber water gel is one of the easiest factors to adjust via the process water quality and the use of chemical additives.

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Section: Chemical Additivesmentioning

confidence: 88%

Section: Surface Roughness Of the Fibersmentioning

confidence: 99%

Section: Sheet Formingmentioning

confidence: 99%

Section: Measurement Techniquesmentioning

confidence: 99%

Section: Chemical Additivesmentioning

confidence: 99%

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Initial wet web strength of paper

Belle

Odermatt

2016

Cellulose

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Cellulose fiber networks reinforced with glutaraldehyde–chitosan complexes

Yan

2015

J of Applied Polymer Sci

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In this study, glutaraldehyde–chitosan complexes (GA–chitosan) were prepared and were used as functional additives to enhance the strength properties of cellulose fiber networks. The adsorption and distribution of GA–chitosan on the surface of cellulose fiber were characterized by scanning electron microscopy, X‐ray photoelectron spectroscopy and time‐of‐flight secondary ion mass spectrometry. The effects of glutaraldehyde dosage and GA–chitosan to fiber ratio on the strength properties, including wet‐strength, wet‐web strength, and dry strength, were investigated. GA–chitosan did not require high temperature curing and had good cross‐linking rates at room temperature. Samples treated with GA–chitosan exhibited significant improvements in their mechanical properties. Wet tensile index and wet‐web tensile index (both at 50% solids), and dry tensile index, were increased by about 1300, 190, and 115%, respectively. The GA–chitosan additive developed in this study provides a useful approach to prepare high‐performance value‐added specialty wood‐fiber based products. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42375.

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A preparation method of cellulose fiber networks reinforced by glutaraldehyde-treated chitosan

2015

Cellulose

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The effect of polyelectrolytes on the wet-web strenght of paper

Cited by 17 publications

References 0 publications

Initial wet web strength of paper

Initial wet web strength of paper

Cellulose fiber networks reinforced with glutaraldehyde–chitosan complexes

A preparation method of cellulose fiber networks reinforced by glutaraldehyde-treated chitosan

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