The effect of fibrous materials on the rheology of aqueous foams

Ari Jäsberg; Pasi Selenius; Antti Koponen

The effect of fibrous materials on the rheology of aqueous foams

Ari Jäsberg, Pasi Selenius, Antti Koponen

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

We studied fully developed pipe flow of fibre-laden aqueous foams and decoupled their bulk rheological properties boundary effects like slippage at the pipe wall. The air volume fraction of the foams varied between 70% and 75%. The addition of hardwood fibres at the consistency 20 g/kg to plain aqueous foam increased viscosity more than 100%, while with microfibrillated cellulose at a consistency of 25 g/kg the increase was about 30%. The effect of synthetic (cellulosic)rayon fibres was negligible at the consistency of 20 g/kg. All the studied foams could be described as shear-thinning power-law fluids with significant slippage at the pipe wall by particles size and interactions between particles and bubbles.

Original language	English
Title of host publication	Advances in pulp and paper research
Subtitle of host publication	Transactions of the 16th Fundamental Research Symposium held in Oxford
Editors	Warren Batchelor, Daniel Söderberg
Publisher	Pulp & Paper Fundamental Research Society
Pages	159-174
ISBN (Print)	978-0-9926163-3-5
Publication status	Published - 2017
MoE publication type	A4 Article in a conference publication
Event	16th Fundamental Research Symposium, Advances in Pulp and Paper Research - Oxford, United Kingdom Duration: 3 Sep 2017 → 8 Sep 2017

Conference

Conference	16th Fundamental Research Symposium, Advances in Pulp and Paper Research
Country/Territory	United Kingdom
City	Oxford
Period	3/09/17 → 8/09/17

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Jäsberg, A., Selenius, P., & Koponen, A. (2017). The effect of fibrous materials on the rheology of aqueous foams. In W. Batchelor, & D. Söderberg (Eds.), Advances in pulp and paper research: Transactions of the 16th Fundamental Research Symposium held in Oxford (pp. 159-174). Pulp & Paper Fundamental Research Society. https://bioresources.cnr.ncsu.edu/resources/the-effect-of-fibrous-materials-on-the-rheology-of-aqueous-foams/

@inproceedings{72076524038c4a2e8569d252964de990,

title = "The effect of fibrous materials on the rheology of aqueous foams",

abstract = "We studied fully developed pipe flow of fibre-laden aqueous foams and decoupled their bulk rheological properties boundary effects like slippage at the pipe wall. The air volume fraction of the foams varied between 70% and 75%. The addition of hardwood fibres at the consistency 20 g/kg to plain aqueous foam increased viscosity more than 100%, while with microfibrillated cellulose at a consistency of 25 g/kg the increase was about 30%. The effect of synthetic (cellulosic)rayon fibres was negligible at the consistency of 20 g/kg. All the studied foams could be described as shear-thinning power-law fluids with significant slippage at the pipe wall by particles size and interactions between particles and bubbles.",

author = "Ari J{\"a}sberg and Pasi Selenius and Antti Koponen",

year = "2017",

language = "English",

isbn = "978-0-9926163-3-5",

pages = "159--174",

editor = "Warren Batchelor and Daniel S{\"o}derberg",

booktitle = "Advances in pulp and paper research",

publisher = "Pulp & Paper Fundamental Research Society",

address = "United Kingdom",

note = "16th Fundamental Research Symposium, Advances in Pulp and Paper Research ; Conference date: 03-09-2017 Through 08-09-2017",

}

Jäsberg, A, Selenius, P & Koponen, A 2017, The effect of fibrous materials on the rheology of aqueous foams. in W Batchelor & D Söderberg (eds), Advances in pulp and paper research: Transactions of the 16th Fundamental Research Symposium held in Oxford. Pulp & Paper Fundamental Research Society, pp. 159-174, 16th Fundamental Research Symposium, Advances in Pulp and Paper Research, Oxford, United Kingdom, 3/09/17. <https://bioresources.cnr.ncsu.edu/resources/the-effect-of-fibrous-materials-on-the-rheology-of-aqueous-foams/>

The effect of fibrous materials on the rheology of aqueous foams. / Jäsberg, Ari; Selenius, Pasi; Koponen, Antti.

Advances in pulp and paper research: Transactions of the 16th Fundamental Research Symposium held in Oxford. ed. / Warren Batchelor; Daniel Söderberg. Pulp & Paper Fundamental Research Society, 2017. p. 159-174.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - The effect of fibrous materials on the rheology of aqueous foams

AU - Jäsberg, Ari

AU - Selenius, Pasi

AU - Koponen, Antti

PY - 2017

Y1 - 2017

N2 - We studied fully developed pipe flow of fibre-laden aqueous foams and decoupled their bulk rheological properties boundary effects like slippage at the pipe wall. The air volume fraction of the foams varied between 70% and 75%. The addition of hardwood fibres at the consistency 20 g/kg to plain aqueous foam increased viscosity more than 100%, while with microfibrillated cellulose at a consistency of 25 g/kg the increase was about 30%. The effect of synthetic (cellulosic)rayon fibres was negligible at the consistency of 20 g/kg. All the studied foams could be described as shear-thinning power-law fluids with significant slippage at the pipe wall by particles size and interactions between particles and bubbles.

AB - We studied fully developed pipe flow of fibre-laden aqueous foams and decoupled their bulk rheological properties boundary effects like slippage at the pipe wall. The air volume fraction of the foams varied between 70% and 75%. The addition of hardwood fibres at the consistency 20 g/kg to plain aqueous foam increased viscosity more than 100%, while with microfibrillated cellulose at a consistency of 25 g/kg the increase was about 30%. The effect of synthetic (cellulosic)rayon fibres was negligible at the consistency of 20 g/kg. All the studied foams could be described as shear-thinning power-law fluids with significant slippage at the pipe wall by particles size and interactions between particles and bubbles.

M3 - Conference article in proceedings

SN - 978-0-9926163-3-5

SP - 159

EP - 174

BT - Advances in pulp and paper research

A2 - Batchelor, Warren

A2 - Söderberg, Daniel

PB - Pulp & Paper Fundamental Research Society

T2 - 16th Fundamental Research Symposium, Advances in Pulp and Paper Research

Y2 - 3 September 2017 through 8 September 2017

ER -

The effect of fibrous materials on the rheology of aqueous foams

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