Comparing the rheological properties of novel nanofibrillar cellulose-formulated pigment coating colours with those using traditional thickener
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Katarina Dimic-Misic
,
Tuomo Salo
Abstract
Nanocellulose containing materials, such as micro-fibrillated cellulose (MFC) and nanofibrillated cellulose (NFC), are potential additives which could improve strength properties of coated paper and board surfaces and thus substitute natural and synthetic cobinders, such as carboxymethyl cellulose (CMC) and polyacrylic thickeners, in pigmented coating formulations. The aim of this study is to evaluate whether MFC/NFC can be used in coating colours as sole co-binder. In this investigation, the change of rheological and dewatering behaviour of coating colours, having a single blend of pigments (ground calcium carbonate and kaolin clay) together with a latex emulsion binder, is studied when CMC is used as sole co-binder and during its partial and finally total replacement with MFC/NFC. The findings suggest that even though all coatings show viscoelasticity, MFC/NFC is seen to relate to the gel-like nature of the nanoparticles in the coating colour whereas the viscoelastic behaviour in the case of CMC is induced by differential flocculation amongst the pigment and latex binder. The flocculation mechanism is predicted to be necessary in order to provide the link between water retention and elastic structure recovery where anti-sagging is a prerequisite, such as in the coating of rough substrates, e.g. for board and packaging.
© 2018 by Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- Introduction
- Crill: A novel technique to characterize nano-ligno-cellulose
- Characterisation of log loading process
- Effect of log loading on the performance of wood room
- A comparison of fibre deformations from mill like and laboratory kraft cooking of softwood
- Experimental study of some factors affecting pulp screen capacity
- Automated Drop-on-Fiber contact angle measurement using a microrobotic platform
- Analytical measurement of microstickies on fibers by model surfaces
- Increase of the filler content in papermaking by using a silica-coated PCC filler
- Effect of NaOH/urea solution on enhancing grease resistance and strength of paper
- Comparing the rheological properties of novel nanofibrillar cellulose-formulated pigment coating colours with those using traditional thickener
- Adjustable wetting of Liquid Flame Spray (LFS) TiO2-nanoparticle coated board: Batch-type versus roll-to-roll stimulation methods
- An evaluation method for print mottle using wavelet denoising and image grey level intensity gradient
- Factorial study of connections between process variables and kraft paper quality properties
- Directional emittance of dry and moist paper
- Tear and tensile strength development of PGW and CTMP pulps mixed with PLA or viscose fibres
- Paper strength improvement by inclusion of nano-lignocellulose to Chemi-thermomechanical pulp
- A method for preparing extensible paper on the laboratory scale
- Fiber energy efficiency Part I: Extended entropy model
- Fiber energy efficiency Part II: Forces acting on the refiner bars
- The influence of process waters on optical properties during storage of hydrogen-peroxide bleached Norway spruce mechanical pulp
- Some causes of formation of colour during storage of hydrogen-peroxide bleached Norway spruce mechanical pulp
Artikel in diesem Heft
- Introduction
- Crill: A novel technique to characterize nano-ligno-cellulose
- Characterisation of log loading process
- Effect of log loading on the performance of wood room
- A comparison of fibre deformations from mill like and laboratory kraft cooking of softwood
- Experimental study of some factors affecting pulp screen capacity
- Automated Drop-on-Fiber contact angle measurement using a microrobotic platform
- Analytical measurement of microstickies on fibers by model surfaces
- Increase of the filler content in papermaking by using a silica-coated PCC filler
- Effect of NaOH/urea solution on enhancing grease resistance and strength of paper
- Comparing the rheological properties of novel nanofibrillar cellulose-formulated pigment coating colours with those using traditional thickener
- Adjustable wetting of Liquid Flame Spray (LFS) TiO2-nanoparticle coated board: Batch-type versus roll-to-roll stimulation methods
- An evaluation method for print mottle using wavelet denoising and image grey level intensity gradient
- Factorial study of connections between process variables and kraft paper quality properties
- Directional emittance of dry and moist paper
- Tear and tensile strength development of PGW and CTMP pulps mixed with PLA or viscose fibres
- Paper strength improvement by inclusion of nano-lignocellulose to Chemi-thermomechanical pulp
- A method for preparing extensible paper on the laboratory scale
- Fiber energy efficiency Part I: Extended entropy model
- Fiber energy efficiency Part II: Forces acting on the refiner bars
- The influence of process waters on optical properties during storage of hydrogen-peroxide bleached Norway spruce mechanical pulp
- Some causes of formation of colour during storage of hydrogen-peroxide bleached Norway spruce mechanical pulp
