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Progress in Paper Physics Seminar 2016

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Progress in Paper Physics Seminar 2016 Progress in Paper Physics Seminar 2016 Conference Proceedings Progress in Paper Physics Seminar 2016 Conference Proceedings Scientific Committee Program Secretary: Heinz-Joachim Schaffrath Technische Universität Darmstadt, Germany Program Committee: Warren Batchelor Monash University, Australia Wolfgang Bauer Graz University of Technology, Austria Jean-Francis Bloch Grenoble Institute of Technology, France Ulrich Hirn Graz University of Technology, Austria Thaddeus Maloney Aalto University, Finland Mark Martinez University of British Columbia, Canada Sören Östlund Royal Institute of Technology, Sweden Samuel Schabel Technische Universität Darmstadt, Germany Tetsu Uesaka Mid Sweden University, Sweden Schabel, Samuel; Schaffrath, Heinz-Joachim (eds.) “Progress in Paper Physics Seminar 2016 Conference Proceedings” Darmstadt, 2016 digital version: URL: www.tuprints.ulb.tu-darmstadt.de/5636 URN: urb:nbn:de:tuda-tuprints-56362 print ISBN 978-3-00-054001-1 Cover photo: Hochzeitsturm Mathildenhöhe (©Agentur für Mediendesign - Lichtenberg UG) Presentations Session I ”New Applications” ................................................. 1 Conducting paper based photovoltaics .................................................... 2 Enhancing the compression and shear properties of sandwich- honeycomb cores and foldcores using new paper-like materials .......... 4 Potential of impulse drying technology for molded pulp products manufacture ................................................................................................. 9 Improving the extensibility of thermoformable web structures with polymer dispersions ................................................................................. 16 Paper based all-cellulose composites – mechanical properties and anisotropy .................................................................................................. 23 Development of cellulose nanofibre quality with mechanical energy: Effect of starting chemical composition ................................................. 27 Understanding and tailoring fluid flow in designed microfluidic papers ................................................................................... 30 Modeling and characterisation of localized deformation of paperboard in the SCT and folding. .................................................... 31 Session II ”Paper Mechanics” ............................................... 36 Analysis of short-span uniaxial tests of paperboard samples.............. 37 3D Structure & Strength Characterization of Northern Bleached Softwood Kraft Paper ................................................................................ 42 Stress-strain behavior of paper affected by the actual contact area.... 47 Prediction of box-failure by using paper data with enhanced McKee-formula ......................................................................... 54 Biaxial (In-Plane) Failure and Yield of Paperboard................................. 60 Predicting the long-term mechanical behavior of corrugated card- board packaging based on speed rate controlled short term tests ...... 65 Linking paper structure to tensile deformation and fracture initiation ................................................................................ 71 Session III “Pulp & Paper Processing” .................................. 76 Fines separation and thickening in the lab scale by means of screening and microbubble flotation .......................................................77 Determination of WRV from fiber and fine fractions and their impact on WRV in the pulp mixture .........................................................84 Wall investigations of pulp of paper flow in pipes-New model of behaviour or pulp of paper flow Paper ....................................................90 The Volume under Load model for evaluating wet pressing performance ...............................................................................................96 Thickening and Dewatering of Cellulose Nanofibrils and Fines- Enriched Suspensions using Centrifugation .......................................... 98 Morphological and physical properties of pulps prepared from a dry defibration process ...........................................................................103 A First Principles Modelling Approach Probing the Chemical Suitability of Synthetic Strengtheners in Papermaking ....................... 109 Wheat straw soda paper strengthened by nanofibrillated cellulose and Cationic Polyacrylamide (C-PAM) ...................................................110 Session IV „Characterisation of Pulp & Paper“ ................... 116 Improvement of ultraviolet-visible diffuse reflectance spectroscopy for chromophores research ........................................... 117 Improving the understanding of paper formability by applying new methods of material mechanics characterization ........................ 123 Soft Radiography for the Structural Characterization of Paperboards ........................................................................................126 An Operating Window for Acceptable Creasing of Paperboard.......... 132 Characterizing hydraulic properties of paper coatings using FIB-SIM tomography and 3D pore-scale modeling ............................... 138 ACA Ash Content Analyzer: Optimizing the filler content in paper and board ..................................................................................142 Fully automatic time dependent contact angle mapping on paper sheets facilitated by the novel liquid needle based dosing technique ................................................... 147 Highly dispersible synthetic fibers for paper manufacturing .............. 149 Thermal fiber orientation tensors – a novel approach for characterizing the local fiber orientation in paper and paperboard ... 150 Continuum Modeling of Wrinkles and Explicit FEM Modeling of Paperboard Deep-Drawing ...................................................................... 156 X-ray nanotomography of fibre bonds .................................................. 162 Modeling multi-phase transport and swelling of paperboard using hybrid mixture theory .............................................................................. 169 Influence of different relative humidity on the strength of individual hardwood and softwood fibres and joints ............................................ 174 The effect of geometry on the mechanical properties of the fiber bonds .................................................................. 180 Simulation of an idealized sealing of two sheets of paperboard ........ 185 3D-modelling of cellulose fibers ............................................................ 189 The effect of inhomogeneous material properties in explicit dynamic simulation of paperboard forming ........................................ 193 Multi-scale modeling of paper ................................................................ 200 Posters ................................................................................ 204 Temperature rise at an imbibition front ................................................. 205 Modeling of the fluid flow in tailor-made paper substrates ................. 208 Exploring Paper/AgNW based composites for photovoltaic devices by atomic force microscopy methods ..................................... 213 Effect of process parameters on the dryness of molded pulp products ........................................................................ 217 Modelling of stress relaxation and elastic recovery of wet paper ...... 221 Characterization of the load capacity of a vulcanized fiber inner thread .......................................................... 225 Microbial Anchoring and Support System (MASS) fo biocatalysts and the delivery of bioactive materials ........................... 228 Evaluating the quality of recycled fibre material with a new concept .................................................................................. 230 Edge-wrinkling in stacked sheets of paper ........................................... 234 Paper-Based Block Copolymer and Functional Polymer membranes ............................................................ 236 Master forming of vulcanized fibre with the pulp moulding procedure ......................................................... 238 Estimating the Area in Molecular Contact using Förster Resonance Energy Transfer Microscopy (FRET) ................................. 241 Continuous production of plasticized cellulosic composites with a paper machine ......................................................... 245 Advanced Structure Research of Functional Cellulose and Paper Materials by Solid-State Dynamic Nuclear Polarization (DNP)............ 247 Session I ”New Applications” 1 Conducting paper based photovoltaics R. Schennach1,2 and B. Friedel1 AUTHOR INFORMATION 1 Institute of Solid State Physics, Graz University of Technology, Austria 2 CD-Laboratory for Fiber Swelling and Paper Performance Email: [email protected] R. Schennach Functional organic photovoltaic devices on unmodified wood pulp fiber networks have been built. Long silver nanowires (AgNWs) have been adsorbed to their surface by help of naturally present hydroxyl groups by simple dip-coating, forming a well conductive and translucent fiber network. Low-density sheets of such treated cellulose fibers were characterized optically and electrically, showing hardly any absorption losses from silver content,
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