CD Laboratory for Fiber Swelling and Paper Performance

The CD Laboratory for Fiber Swelling and Paper Performance has four industrial partners: Mondi, Oce, Kelheim and SIG. Research is aimed on fiber swelling and its effect on three aspects of fiber network performance. There are three key research areas. LIQUID ABSORPTION. Here the kinetics of liquid absorption on a short timescale are investigated. This is related to the ink setting during printing, which is critical in high speed inkjet. DIMENSIONAL STABILITY OF FIBER NETWORKS. the effect of liquid absorption on the dimensional stability of paper is addressed. The paper has to absorb the ink during printing, which may lead to deformations like buckling or curling of the paper. Modifications of fiber and paper to reduce deformations and improve dimensional stability are investigated. The expansion of fiber networks under load is also of interes for viscose fiber producers as hygiene products like tampons are taking up the liquid by expansion of the fiber network. FIBER NETWORK MECHANICS. Primary aim of the research is to develop a fundamental understanding of the network mechanics on a fiber leven and on the network level. Micrometchanical testing of fiber properties is carried out and used to develop constitutive material models on the fiber- and on the network level. The effect of moistioning and drying process on the mechanical behavior of the paper during printing and converting is investigated in order to better understand and improve the industrial processes. Apart from that it is the aim to work out strategies to improve the mechanical performance of paper, i.e. paper strength.

Staff

Caterina Czibula
Dipl.-Ing.
Wolfgang Johann Fischer
Dipl.-Ing. Dr.techn.
Ulrich Hirn
Assoc.Prof. Dipl.-Ing. Dr.techn.
Sarah Krainer
Dipl.-Ing. BSc
Artem Kulachenko
Prof.
Hamid Reza Motamedian
MSc.
Katrin Niegelhell
Dipl.-Ing. BSc
Claudia Payerl
Dipl.-Ing. BSc
Esther Schennach
MSc
Robert Schennach
Ao.Univ.-Prof. Mag. Dr.rer.nat.
Michael Schuller
BSc
Stefan Spirk
Ass.Prof. Priv.-Doz. Mag.rer.nat. Dr.rer.nat.
Rozalba Xhori

Publications

Journal Article
Marina Jajcinovic, Wolfgang Johann Fischer, Mautner Andreas, Wolfgang Bauer and Ulrich Hirn Influence of relative humidity on the strength of hardwood and softwood pulp fibres and fibre to fibre joints Cellulose 2018, 2681-2690, 2018 , DOI Show publication in PURE
Christian Ganser, Caterina Marina Czibula, Daniel Tscharnuter, Thomas Schöberl, Christian Teichert and Ulrich Hirn Combining adhesive contact mechanics with a viscoelastic material model to probe local material properties by AFM Soft matter 2018, 140-150, 2018 , DOI Show publication in PURE
Sarah Krainer and Ulrich Hirn Short timescale wetting and penetration on porous sheets measured with ultrasound, direct absorption and contact angle RSC Advances 2018, 12861–12869, 2018 , DOI Show publication in PURE
Katrin Niegelhell, Angela Chemelli, Josefine Hobisch, Thomas Griesser, Heidemarie Reiter, Ulrich Hirn and Stefan Spirk Interaction of industrially relevant cationic starches with cellulose Carbohydrate polymers 2018, 290-296, 2018 , DOI Show publication in PURE
Claudia Payerl, Matej Bracic, Armin Zankel, Wolfgang Johann Fischer, Manuel Kaschowitz, Eleonore Fröhlich, Rupert Kargl, Franz Stelzer and Stefan Spirk Nonspecific protein adsorption on cationically modified Lyocell fibers monitored by zeta potential measurements Carbohydrate polymers 2017, 49-56, 2017 , DOI Show publication in PURE
Marina Jajcinovic, Wolfgang Johann Fischer, Ulrich Hirn and Wolfgang Bauer Strength of individual hardwood fibres and fibre to fibre joints Cellulose 2016, 2049-2060, 2016 , DOI Show publication in PURE
Conference/Workshop Article
Caterina Marina Czibula, Christian Ganser, Daniel Tscharnuter, Thomas Schöberl, Christian Teichert and Ulrich Hirn Investigating the transversal viscoelastic properties of paper fibers by atomic force microscopyThe issues in mechanics of pulp and paper materials74-79 Show publication in PURE
Caterina Marina Czibula, Christian Ganser, Markus Kratzer, F Brumbauer, Marianne Kräuter, M Hirber, K Shanmugam, Warren Batchelor, M Penn, M Ebner, M Pramstrahler, F Pilat, H.-T. Chien, Robert Schennach, Bettina Friedel and Christian Teichert Silver Nanowires: A Versatile Tool for Conductive PaperAdvances in Pulp and Paper Research723-737 Show publication in PURE
Sami-Seppo Ovaska, Katriina Mielonen, Johanna Lyytikäinen, Ulrich Hirn and Kaj Backfolk Determination of Repulpability of Talc-Filled Biopolymer Dispersion Coatings and Optimization of Repulped Reject for Improved Material Efficiency by Tailoring CoatingsTappi PaperCon 2017 Proceedings36-48 Show publication in PURE
Ulrich Hirn and Robert Schennach Fiber-Fiber Bond Formation and Failure: Mechanisms and Analytical TechniquesAdvances in pulp and paper research, Oxford 2017839 - 863 Show publication in PURE
Marina Jajcinovic, Wolfgang Johann Fischer, Ulrich Hirn and Wolfgang Bauer Influence of different realtive humidity on the strength of individual hardwood and softwood fibres and jointsProgress in Paper Physics Seminar 2016174 Show publication in PURE
Georg Johann Urstöger, Robert Schennach and Ulrich Hirn Estimating the area in molecular contact using Förster resonance energy transfer microscopy (FRET)Progress in Paper Physics Seminar 2016241-244 Show publication in PURE
Caterina Czibula, Christian Ganser, Markus Kratzer, Robert Schennach, Bettina Friedel and Christian Teichert Exploring Paper/AgNW based composites for photovoltaic devices by atomic force microscopy methodsProgress in Paper Physics Seminar 2016 Conference Proceedings213-216 Show publication in PURE
Thesis
Thomas Harter Einflüsse und Ursachen für reversible und irreversible Wölbung von Kopierpapier Show publication in PURE
Oliver Philipp Hunstein Long and short term measurements of printed uncoated fine paper using a high speed inkjet testing setup Show publication in PURE
Tristan Seidlhofer Material Model for Anisotropic Viscoelasticity at Finite Deformations Applied to Pulp Fibres Show publication in PURE
Sarah Krainer Evaluierung verschiedener Messmethoden und Testflüssigkeiten zur Bewertung der Druckfarbenpenetration im High Speed Inkjet – Druck Show publication in PURE
Ulrich Hirn Paper Structure at Different Length Scales and its Influence on Paper Properties Show publication in PURE
Michael Schuller Untersuchung von Zweiseitigkeiten und Trocknungsspannungen auf das Wölbungsverhalten von Kopierpapieren Show publication in PURE
Other Article
Sarah Krainer and Ulrich Hirn Short timescale wetting and penetration on paper Show publication in PURE
Sarah Krainer and Ulrich Hirn Measuring ink spreading and penetration for HSI printing Show publication in PURE
Tristan Seidlhofer Material Model for Pulp Fibres and Parameter Evaluation Method Show publication in PURE
Manfred Hannes Ulz, Thomas Ebner and Ulrich Hirn Failure mechanism for pulp inter-fibre joints Show publication in PURE
Caterina Marina Czibula, Christian Ganser, Christian Teichert and Ulrich Hirn Using atomic force microscopy to investigate the transversal viscoelastic properties of paper fibers Show publication in PURE
Sarah Krainer Liquid penetration into porous media Show publication in PURE
Jussi Antero Lahti, Michael Dauer, Douglas Steven Keller and Ulrich Hirn LINKING PAPER STRUCTURE TO LOCAL DISTRIBUTION OF DEFORMATION AND DAMAGE Show publication in PURE
Jussi Antero Lahti, Michael Dauer, Ulrich Hirn and D. Steven Keller Linking paper structure to damage distribution and fracture initiation Show publication in PURE
Sarah Krainer and Ulrich Hirn Measuring ink spreading and penetration for high speed inkjet printing Show publication in PURE
Sarah Krainer and Ulrich Hirn Liquid penetraion into porous media Show publication in PURE
Christian Ganser, Caterina Czibula, Ulrich Hirn and Christian Teichert Humidity dependent mechanical properties of cellulose materials investigated by atomic force microscopy Show publication in PURE
Christian Ganser, Caterina Czibula, Jakob Manhart, Simone Radl, Sandra Schlögl, Ulrich Hirn and Christian Teichert Measurements of viscoelasticity and adhesion force of polymer materials with large radius AFM tips Show publication in PURE
Caterina Czibula, Christian Ganser, Christian Teichert and Ulrich Hirn AFM based dynamic mechanical analysis of viscoelastic properties of cellulose fibers Show publication in PURE
Wolfgang Johann Fischer, Marina Jajcinovic, Ulrich Hirn and Wolfgang Bauer Cellulose fibers and bonds - Mechancial and morphological properties of the smallest constituents of the paper network Show publication in PURE
Contact
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Ulrich Hirn