CD Laboratory for Fiber Swelling and Paper Performance

The CD Laboratory for Fiber Swelling and Paper Performance has four industrial partners: 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. Dr.mont.
Wolfgang Johann Fischer
Dipl.-Ing. Dr.techn.
Christian Ganser
Dipl.-Ing. Dr.mont.
Ulrich Hirn
Univ.-Prof. Dipl.-Ing. Dr.techn.
Sarah Krainer
BSc
Artem Kulachenko
Prof.
Jussi Antero Lahti
DI Dr.techn.
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
Assoc.Prof. Mag.rer.nat. Dr.rer.nat.
Georg Johann Urstöger
Dipl.-Ing. BSc
Rozalba Xhori

Publications

Journal Article
Ulrich Hirn Contact Angle Measurement on Porous Substrates: Effect of Liquid Absorption and Drop Size Colloids and Surfaces / A 619, 126503, 2021 , DOI Show publication in PURE
Ulrich Hirn, Stefan Spirk and Carina Sampl Real-time adsorption of optical brightening agents on cellulose thin films Carbohydrate Polymers 261, 2021 , DOI Show publication in PURE
Comprehensive investigation of the viscoelastic properties of PMMA by nanoindentation Polymer Testing 93, 2021 , DOI Show publication in PURE
Ulrich Hirn and Tristan Seidlhofer A compressible plasticity model for pulp fibers under transverse load Mechanics of Materials 153, 2021 , DOI Show publication in PURE
Ulrich Hirn and Jussi Antero Lahti The influence of structural variations on the constitutive response and strain variations in thin fibrous materials Acta Materialia 203, 2021 , DOI Show publication in PURE
Two-dimensional talc as a van der Waals material for solid lubrication at the nanoscale Nanotechnology 32, 2021 , DOI Show publication in PURE
Ulrich Hirn and Carina Waldner Ultrasonic Liquid Penetration Measurement in Thin Sheets—Physical Mechanisms and Interpretation Materials 13, 1-18, 2020 , DOI Show publication in PURE
Ulrich Hirn Microstructure and mechanical properties of free and restrained dried paper: a comprehensive investigation Cellulose 27, 8567-8583, 2020 , DOI Show publication in PURE
Ulrich Hirn and Jussi Antero Lahti Identifying the weak spots in packaging paper: local variations in grammage, fiber orientation and density and the resulting local strain and failure under load Cellulose 27, 10327-10343, 2020 , DOI Show publication in PURE
Ulrich Hirn Predicting Inkjet Dot Spreading and Print Through from Liquid Penetration- and Picoliter Contact Angle Measurement Nordic Pulp & Paper Research Journal 35, 124-136, 2020 , DOI Show publication in PURE
Ulrich Hirn The role of the fiber and the bond in the hygroexpansion and curl of thin freely dried paper sheets International Journal of Solids and Structures 193-194, 302-313, 2020 , DOI Show publication in PURE
Ulrich Hirn Tensile behaviour of dislocated/crystalline cellulose fibrils at the nano scale Carbohydrate Polymers 235, 115946, 2020 , DOI Show publication in PURE
Ulrich Hirn Mechanical properties of cellulose fibers measured by brillouin spectroscopy Cellulose 27, 4209-4220, 2020 , DOI Show publication in PURE
Ulrich Hirn Understanding extensibility of paper: Role of fiber elongation and fiber bonding. TAPPI Journal 19, 125-135, 2020 , DOI Show publication in PURE
Ulrich Hirn, Jussi Antero Lahti, Stefan Spirk, Werner Schlemmer and Melissa Sophie Egger Rapid Separation and Quantitative Analysis of Complex Lipophilic Wood Pulp Extractive Mixtures Based on 2D Thin Layer Chromatography ACS Sustainable Chemistry & Engineering 8, 12534-12541, 2020 , DOI Show publication in PURE
Ulrich Hirn and Jussi Antero Lahti Time-dependent mechanical response of paper during web fed high speed inkjet printing Nordic Pulp & Paper Research Journal 34, 107-116, 2019 Show publication in PURE
Ulrich Hirn, Stefan Spirk and Carina Sampl Multilayer Density Analysis of Cellulose Thin Films Frontiers in Chemistry 7, 251, 2019 , DOI Show publication in PURE
Ulrich Hirn and Wolfgang Bauer A continuum micromechanics approach to the elasticity and strength of planar fiber networks European Journal of Mechanics / A 75, 516-531, 2019 , DOI Show publication in PURE
Ulrich Hirn Evaluating the degree of molecular contact between cellulose fiber surfaces using FRET microscopy Cellulose 26, 7037-7050, 2019 , DOI Show publication in PURE
Ulrich Hirn Effect of mechanically induced micro deformations on extensibility and strength of individual softwood pulp fibers and sheets Cellulose 26, 1995-2012, 2019 , DOI Show publication in PURE
Ulrich Hirn and Tristan Seidlhofer Transverse viscoelastic properties of pulp fibers investigated with an atomic force microscopy method Journal of Materials Science 54, 11448–11461, 2019 , DOI Show publication in PURE
Ulrich Hirn and Tristan Seidlhofer A minimal continuum representation of a transverse isotropic viscoelastic pulp fibre based on micromechanical measurements Mechanics of Materials 135, 149-161, 2019 , DOI Show publication in PURE
Ulrich Hirn and Tristan Seidlhofer Material model of pulp fibres Proceedings in Applied Mathematics and Mechanics 2019, e201900053, 2019 , DOI Show publication in PURE
Stefan Spirk Design of Friction, Morphology, Wetting, and Protein Affinity by Cellulose Blend Thin Film Composition Frontiers in Chemistry 7, 2019 , DOI Show publication in PURE
Ulrich Hirn The effect of viscosity and surface tension on inkjet printed picoliter dots RSC Advances 2019, 31708-31719, 2019 Show publication in PURE
Ulrich Hirn and Stefan Spirk Interaction of industrially relevant cationic starches with cellulose Carbohydrate Polymers 179, 290-296, 2018 , DOI Show publication in PURE
Ulrich Hirn Combining adhesive contact mechanics with a viscoelastic material model to probe local material properties by AFM Soft Matter 14, 140-150, 2018 , DOI Show publication in PURE
Ulrich Hirn and Wolfgang Bauer Influence of relative humidity on the strength of hardwood and softwood pulp fibres and fibre to fibre joints Cellulose 25, 2681-2690, 2018 , DOI Show publication in PURE
Ulrich Hirn Short timescale wetting and penetration on porous sheets measured with ultrasound, direct absorption and contact angle RSC Advances 8, 12861–12869, 2018 , DOI Show publication in PURE
Stefan Spirk Nonspecific protein adsorption on cationically modified Lyocell fibers monitored by zeta potential measurements Carbohydrate Polymers 164, 49-56, 2017 , DOI Show publication in PURE
Ulrich Hirn and Wolfgang Bauer Strength of individual hardwood fibres and fibre to fibre joints Cellulose 23, 2049-2060, 2016 , DOI Show publication in PURE
Conference/Workshop Article
Ulrich Hirn and Tristan Seidlhofer Transverse viscoelastic properties of pulp fibers investigated by atomic force microscopyThe issues in mechanics of pulp and paper materials60-64 Show publication in PURE
Ulrich Hirn The role of the fiber and bond in hygroexpansion and curl of paperProceedings of the 2019 Paper Physics Conference, Indianapolis, USA69-84 Show publication in PURE
Ulrich Hirn Understanding extensibility of paper: Role of fiber elongation and fiber bondingProceedings of the 2019 Paper Physics Conference, Indianapolis, USA213-224 Show publication in PURE
Ulrich Hirn and Jussi Antero Lahti Laboratory simulation of paper mechanical response during high-speed inkjet printingProgress in Paper Physics Seminar 2018 Show publication in PURE
Silver Nanowires: A Versatile Tool for Conductive PaperAdvances in Pulp and Paper Research723-737 Show publication in PURE
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
Ulrich Hirn Fiber-Fiber Bond Formation and Failure: Mechanisms and Analytical TechniquesAdvances in pulp and paper research, Oxford 2017839 - 863 Show publication in PURE
Ulrich Hirn 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 Jussi Antero Lahti LINKING PAPER STRUCTURE TO LOCAL DISTRIBUTION OF DEFORMATION AND DAMAGE Advances in pulp and paper research, Oxford 2017: 16th Fundamental Research Symposium, Oxford669-682 Show publication in PURE
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
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
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
Tristan Seidlhofer Material Model for Anisotropic Viscoelasticity at Finite Deformations Applied to Pulp Fibres Show publication in PURE
Long and short term measurements of printed uncoated fine paper using a high speed inkjet testing setup Show publication in PURE
Untersuchung von Zweiseitigkeiten und Trocknungsspannungen auf das Wölbungsverhalten von Kopierpapieren Show publication in PURE
Ulrich Hirn Paper Structure at Different Length Scales and its Influence on Paper Properties Show publication in PURE
Evaluierung verschiedener Messmethoden und Testflüssigkeiten zur Bewertung der Druckfarbenpenetration im High Speed Inkjet – Druck Show publication in PURE
Other Article
Ulrich Hirn Investigation of time dependent liquid property influence on paper wetting and penetration using pico-liter contact angle measurement Show publication in PURE
Ulrich Hirn Investigation of liquid property influence on paper wetting and penetration using picoliter contact angle measurement Show publication in PURE
Ulrich Hirn Wetting and penetration on paper Show publication in PURE
Ulrich Hirn Liquid penetration into paper - Comparison of measurement technique results and real printout analysis Show publication in PURE
Ulrich Hirn Penetration into paper - industry High Speed Inkjet prints evaluation vs. measurement techniques results Show publication in PURE
Ulrich Hirn Measuring ink spreading and penetration for HSI printing Show publication in PURE
Ulrich Hirn Short timescale wetting and penetration on paper Show publication in PURE
Tristan Seidlhofer Material Model for Pulp Fibres and Parameter Evaluation Method Show publication in PURE
Ulrich Hirn Failure mechanism for pulp inter-fibre joints Show publication in PURE
Ulrich Hirn Using atomic force microscopy to investigate the transversal viscoelastic properties of paper fibers Show publication in PURE
Ulrich Hirn and Jussi Antero Lahti Linking paper structure to damage distribution and fracture initiation Show publication in PURE
Ulrich Hirn Liquid penetraion into porous media Show publication in PURE
Ulrich Hirn Measuring ink spreading and penetration for high speed inkjet printing Show publication in PURE
Ulrich Hirn Measurements of viscoelasticity and adhesion force of polymer materials with large radius AFM tips Show publication in PURE
Ulrich Hirn Humidity dependent mechanical properties of cellulose materials investigated by atomic force microscopy Show publication in PURE
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
Ulrich Hirn AFM based dynamic mechanical analysis of viscoelastic properties of cellulose fibers Show publication in PURE
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