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2019

Dewatering of foam-laid and water-laid structures and the formed web properties

Lehmonen, J., Retulainen, E., Paltakari, J., Kinnunen-Raudaskoski, K. & Koponen, A., 16 Nov 2019, In : Cellulose. 20 p.

Research output: Contribution to journalReview ArticleScientificpeer-review

Open Access
Dewatering
Foams
Water
Surface-Active Agents
Surface active agents

Evaluation of yield stress from velocity fluctuations of microfibrillated cellulose suspension flow by optical coherence tomography

Lauri, J., Koponen, A., Haavisto, S. & Fabritius, T., 2019.

Research output: Contribution to conferenceConference PosterScientific

Foam as a carrier fluid in papermaking

Lehmonen, J., Koponen, A., Kinnunen-Raudaskoski, K., Paltakari, J. & Retulainen, E., 2019.

Research output: Contribution to conferenceConference AbstractScientific

Pipe rheology of microfibrillated cellulose suspensions

Turpeinen, T., Jäsberg, A., Haavisto, S., Liukkonen, J., Salmela, J. & Koponen, A. I., 19 Oct 2019, In : Cellulose. 16 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Rheology
Cellulose
Suspensions
Pipe
Yield stress

Real-time monitoring of bubble size distribution in a foam forming process

Koponen, A., Eloranta, H., Jäsberg, A., Honkanen, M. & Kiiskinen, H., Aug 2019, In : Tappi Journal. 18, 8, p. 487-494 8 p.

Research output: Contribution to journalArticleScientificpeer-review

Foams
Monitoring
Fibers
Flocculation
Quality control

Slip flow and wall depletion layer of microfibrillated cellulose suspensions in a pipe flow

Koponen, A., Haavisto, S., Salmela, J. & Kataja, M., Aug 2019, Nordic Rheology Conference, NRC 2019. p. 13 - 20 8 p. (Annual transactions of the Nordic Rheology Society, Vol. 27).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

The effect of consistency on the shear rheology of aqueous suspensions of cellulose micro- and nanofibrils: a review

Koponen, A. I., 12 Dec 2019, In : Cellulose. p. 1-19

Research output: Contribution to journalReview ArticleScientificpeer-review

Open Access
Rheology
Cellulose
Suspensions
Scaling laws
Yield stress
Open Access
Plasticizers
Composite materials
Particle size
Cellulose
Carboxymethylcellulose Sodium
2018

Analysis of industry-related flows by optical coherence tomography: a Review

Koponen, A. & Haavisto, S., 17 Nov 2018, (Accepted/In press) In : Kona: Powder and Particle. 22 p., 2020003.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Optical tomography
Industry
Imaging techniques
Fouling
Rheology

Experimental Investigation of the Flow Dynamics and Rheology of Complex Fluids in Pipe Flow Using Hybrid Velocity Profiling

Koponen, A., Haavisto, S., Lehto, R., Cardona, M., Salmela, J., Powell, R., McCarthy, M. & Kataja, M., Apr 2018.

Research output: Contribution to conferenceConference AbstractScientific

Optical coherence tomography for industrial applications

Turpeinen, T., Koponen, A. & Jäsberg, A., May 2018.

Research output: Contribution to conferenceConference AbstractProfessional

2 Citations (Scopus)

Rheological and Flocculation Analysis of Microfibrillated Cellulose Suspension Using Optical Coherence Tomography

Koponen, A. I., Lauri, J., Haavisto, S. & Fabritius, T., 10 May 2018, In : Applied Sciences. 8, 5, 755.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Optical Coherence Tomography
Optical tomography
Cellulose
Flocculation
Shear stress
3 Citations (Scopus)

The effect of in-line foam generation on foam quality and sheet formation in foam forming

Koponen, A., Jäsberg, A., Lappalainen, T. & Kiiskinen, H., 2018, In : Nordic Pulp and Paper Research Journal. 33, 3, p. 482-495 14 p.

Research output: Contribution to journalArticleScientificpeer-review

foams
foam
Foams
effect
pulp and paper industry
2017
11 Citations (Scopus)

Analysis of rheology and wall depletion of microfibrillated cellulose suspension using optical coherence tomography

Lauri, J., Koponen, A., Czajkowski, J., Haavisto, S. & Fabritius, T., 2017, In : Cellulose. 24, 11, p. 4715-4728 14 p.

Research output: Contribution to journalArticleScientificpeer-review

Optical tomography
Rheology
Cellulose
Suspensions
Flow rate

Analysis of Rheology and Wall Depletion of Microfibrillated Cellulose Using Optical Coherence Tomography

Lauri, J., Koponen, A., Czajkowski, J., Haavisto, S. & Fabritius, T., 2017.

Research output: Contribution to conferenceConference AbstractScientific

4 Citations (Scopus)

Characterization of micro-fibrillated cellulose fiber suspension flow using multi scale velocity profile measurements

Kataja, M., Haavisto, S., Lehto, R., Salmela, J. & Koponen, A., 2017, In : Nordic Pulp and Paper Research Journal. 32, 3, p. 473-482 10 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
cellulose
velocity distribution
fibers
boundary layer flow
boundary layers
4 Citations (Scopus)

Experimental investigation of the flow dynamics and rheology of complex fluids in pipe flow by hybrid multi-scale velocimetry

Haavisto, S., Cardona, M., Salmela, J., Powell, R., McCarthy, M., Kataja, M. & Koponen, A., 1 Nov 2017, In : Experiments in Fluids. 58, 11, 158.

Research output: Contribution to journalArticleScientificpeer-review

pipe flow
working fluids
Pipe flow
Rheology
rheology

Experimental investigation of the flow dynamics and rheology of complex fluids in pipe flow using hybrid velocity profiling

Koponen, A., Haavisto, S., Lehto, R., Cardona, M., Salmela, J., Powell, R., McCarthy, M. & Kataja, M., 2017.

Research output: Contribution to conferenceConference AbstractScientific

Foam forming technology enables new possibilities for paper industry

Pääkkönen, E., Koponen, A. & Kiiskinen, H., 2017.

Research output: Contribution to conferenceConference AbstractScientific

Foams
Industry
Fibers
Raw materials
Papermaking
3 Citations (Scopus)

Mechanically ground softwood fines as a raw material for cellulosic applications

Orelma, H., Tanaka, A., Rautkoski, H., Nurminen, I., Kouko, J. & Koponen, A., 1 Sep 2017, In : Cellulose. 24, 9, p. 3869-3882 14 p.

Research output: Contribution to journalArticleScientificpeer-review

Softwoods
Raw materials
Carboxymethylcellulose Sodium
Crosslinking
Cellulose

The effect of fibrous materials on the rheology of aqueous foams

Jäsberg, A., Selenius, P. & Koponen, A., 2017, Proceedings. p. 159-174

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

5 Citations (Scopus)

The Effect of Void Structure on the Permeability of Fibrous Networks

Koponen, A., Ekman, A., Mattila, K., Al-Qararah, A. M. & Timonen, J., 1 Mar 2017, In : Transport in Porous Media. 117, 2, p. 247-259 13 p.

Research output: Contribution to journalArticleScientificpeer-review

Pulp materials
Thermomechanical pulp
Bleached pulp
Kraft pulp
Flow simulation

Yarns and films from ligno-cellulosic fines

Tanaka, A., Orelma, H., Rautkoski, H., Nurminen, I., Kouko, J. & Koponen, A., 2017. 4 p.

Research output: Contribution to conferenceConference AbstractScientific

yarns
films (materials)
carboxymethylcellulose
cellulose
biodegradability
2016

Aqueous foam as the carrier medium for producing tailored fiber materials

Ketoja, J., Al-Qararah, A., Hjelt, T., Jäsberg, A., Koponen, A. & Harlin, A., 2016, p. CELL 295.

Research output: Contribution to conferenceConference AbstractScientific

foams
bubbles
water
colloids
natural fibers

Flow rheology of fiber-laden aqueous foams

Koponen, A., Selenius, P. & Jäsberg, A., 2016, Proceedings of ICMF 2016.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

8 Citations (Scopus)

Foam forming of long fibers

Koponen, A., Torvinen, K., Jäsberg, A. & Kiiskinen, H., 2016, In : Nordic Pulp and Paper Research Journal. 31, 2, p. 239-247

Research output: Contribution to journalArticleScientificpeer-review

foams
foam
Foams
Fibers
pulp and paper industry
6 Citations (Scopus)

Shear localisation in interfacial particle layers and its influence on Lissajous-plots

Birbaum, F. C., Haavisto, S., Koponen, A., Windhab, E. J. & Fischer, P., 2016, In : Rheologica Acta. 55, 4, p. 267-278

Research output: Contribution to journalArticleScientificpeer-review

plots
shear
Silicon Dioxide
saddles
Clay

Tailoring the microporous structure of fibre materials with foam carrier

Hjelt, T., Al-Qararah, A. M., Pajari, H., Koponen, A., Laine, C., Lappalainen, T., Paananen, A. & Ketoja, J. A., 2016.

Research output: Contribution to conferenceConference AbstractScientific

bubbles
foams
microstructure
rheology
surfactants

The effect of long fibers on sheet properties in foam forming

Koponen, A., Torvinen, K., Jäsberg, A. & Kiiskinen, H., 2016, Paper Conference and Trade Show (PaperCon 2016). TAPPI Press, Vol. 2. p. 894-904

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Foams
Fibers
Water
Flocculation
Raw materials
3 Citations (Scopus)

The flow resistance of fiber sheet during initial dewatering

Koponen, A., Haavisto, S., Liukkonen, J. & Salmela, J., 2016, In : Drying Technology. 34, 12, p. 1521-1533

Research output: Contribution to journalArticleScientificpeer-review

dewatering
flow resistance
Dewatering
fibers
Fibers
2015
6 Citations (Scopus)

Accurate velocity measurements of boundary-layer flows using Doppler optical coherence tomography

Haavisto, S., Salmela, J. & Koponen, A., 2015, In : Experiments in Fluids. 56, 5, 6 p., 96.

Research output: Contribution to journalArticleScientificpeer-review

boundary layer flow
Boundary layer flow
Optical tomography
velocity measurement
Velocity measurement

Application of pulsed ultrasound velocity profiling for measuring flow of black liquor in recovery boiler spraying nozzles

Haavisto, S., Salmela, J., Järvinen, M., Kakkunen, A. & Koponen, A., 2015, In : Tappi Journal. 14, 4, p. 221-226

Research output: Contribution to journalArticleScientificpeer-review

Spraying
Boilers
Nozzles
Ultrasonics
Recovery

Aqueous foam as the carrier phase in the deposition of fibre networks

Al-Qararah, A. M., Ekman, A., Hjelt, T., Ketoja, J. A., Kiiskinen, H., Koponen, A. & Timonen, J., 2015.

Research output: Contribution to conferenceConference AbstractScientific

20 Citations (Scopus)

A unique microstructure of the fiber networks deposited from foam-fiber suspensions

Al-Qararah, A. M., Ekman, A., Hjelt, T., Ketoja, J. A., Kiiskinen, H., Koponen, A. & Timonen, J., 2015, In : Colloids and Surfaces A: Physicochemical and Engineering Aspects. 482, p. 544-553

Research output: Contribution to journalArticleScientificpeer-review

foams
Foams
Suspensions
microstructure
Microstructure
1 Citation (Scopus)

Bulky paper and board at a high dry solids content with foam forming

Torvinen, K., Lahtinen, P., Kiiskinen, H., Hellen, E. & Koponen, A., 2015, Past and Future of OCC Systems, 2015 PaperCon Conference. TAPPI Press, p. 757-766

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Foams
Fibers
Dewatering
Flocculation
Cellulose

Detailed measurement of fibre suspension pipe flow velocity profile

Lehto, R., Haavisto, S., Cardona, M., Salmela, J., McCarthy, M., Powell, R., Koponen, A. & Kataja, M., 2015, COST Action FP1005 Final Conference: EUROMECH Colloquium 566. European Cooperation in Science and Technology COST, p. 22-24

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

pipe flow
flow velocity
velocity distribution
tubes
fibers
14 Citations (Scopus)

Experimental results on the flow rheology of fiber-laden aqueous foams

Jäsberg, A., Selenius, P. & Koponen, A., 2015, In : Colloids and Surfaces A: Physicochemical and Engineering Aspects. 473, p. 147-155

Research output: Contribution to journalArticleScientificpeer-review

Rheology
rheology
foams
Foams
slip

Fibre materials formed with aqueous foam as the carrier phase

Al-Qararah, A., Ekman, A., Hjelt, T., Ketoja, J., Kiiskinen, H., Koponen, A. & Timonen, J., 2015, 2nd International Conference on Rheology and Modeling of Materials: Book of Abstracts. Hungary, 113

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Open Access
foams
bubbles
natural fibers
water
paper pulp

Flow rheology of fiber-laden aqueous foams

Jäsberg, A., Selenius, P. & Koponen, A., 2015, Paper Conference and Trade Show (PaperCon 2015). Curran Associates Inc., p. 872-889

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Foam forming technology enables utilization of long fibers

Katariina, T., Kiiskinen, H., Jäsberg, A., Martikainen, P., Asikainen, J. & Koponen, A., 2015.

Research output: Contribution to conferenceConference AbstractScientific

Foams
Cellulose
Fibers
Pulp
Raw materials

Interfacial wall-slip and its consequences on Lissajous plots

Birbaum, F. C., Haavisto, S., Koponen, A., Windhab, E. J. & Fischer, P., 2015, Abstract book of the 7th International Symposium on Food Rheology and Structure, ISFRS 2015. Zurich: Institute of Food, Nutrition and Health IFNH

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Open Access
slip
plots
silicon dioxide
clays
foams

Interfacial wall-slip and its consequences on Lissajous plots

Birbaum, F. C., Haavisto, S., Koponen, A., Windhab, E. J. & Fischer, P., 2015.

Research output: Contribution to conferenceConference AbstractScientific

2 Citations (Scopus)

Optimization of paper machine initial dewatering

Koponen, A., Haavisto, S., Salmela, J. & Liukkonen, J., 2015, In : Tappi Journal. 14, 5, p. 325-337

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

Response of wet foam to fibre mixing

Al-Qararah, A. M., Hjelt, T., Koponen, A., Harlin, A. & Ketoja, J., 2015, In : Colloids and Surfaces A: Physicochemical and Engineering Aspects. 467, p. 97-106

Research output: Contribution to journalArticleScientificpeer-review

foams
Foams
fibers
Fibers
bubbles

Rheological characterization of MFC using optical coherence tomography

Haavisto, S., Salmela, J., Jäsberg, A., Saarinen, T., Sorvari, A. & Koponen, A., 2015, In : Tappi Journal. 14, 5, p. 291-302

Research output: Contribution to journalArticleScientificpeer-review

Optical tomography
Rheometers
Fluids
Boundary layers

The effect of dewatering pressure profile on the solids content in the forming and press sections

Koponen, A., Haavisto, S., Liukkonen, J. & Salmela, J., 2015, Paper Conference and Trade Show (PaperCon 2015). Curran Associates Inc., p. 796-804

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Utilisation of Optical Coherence Tomography in Rheological Characterisation of Montmorillonite Dispersions

Lille, M., Jäsberg, A., Haavisto, S., Kasa, S. & Koponen, A., 2015, IBEREO15: Challenges in rheology and product development. University of Coimbra, O18

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Open Access
rheometers
montmorillonite
tomography
parallel plates
laminar flow

Wall layer dynamics of microfibrillated cellulose flow assessed by optical coherence tomography

Lauri, J., Czajkowski, J., Haavisto, S., Koponen, A. & Fabritius, T., 2015.

Research output: Contribution to conferenceConference AbstractScientific