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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Mikkonen, Kirsi
University of Helsinki
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024Protective role of wood hemicelluloses: Enhancing yeast probiotics survival in spray drying and storagecitations
- 2022Emulsion characterization via microfluidic devicescitations
- 2021Green Fabrication Approaches of Lignin Nanoparticles from Different Technical Ligninscitations
- 2020Comparison of novel fungal mycelia strains and sustainable growth substrates to produce humidity-resistant biocompositescitations
- 2019The Hydrophobicity of Lignocellulosic Fiber Network Can Be Enhanced with Suberin Fatty Acidscitations
- 2019Emulsifier composition of solid lipid nanoparticles (SLN) affects mechanical and barrier properties of SLN-protein composite filmscitations
- 2018Physicochemical and rheo-mechanical properties of titanium dioxide reinforced sage seed gum nanohybrid hydrogelcitations
- 2018Novel nanobiocomposite hydrogels based on sage seed gum-Laponite: Physico-chemical and rheological characterizationcitations
- 2017Synchrotron microtomography reveals the fine three-dimensional porosity of composite polysaccharide aerogelscitations
- 2017Spruce gum – a new natural Nordic stabilizer
- 2016Softwood-based sponge gelscitations
- 2010Comparison of microencapsulation properties of spruce galactoglucomannans and arabic gum using a model hydrophobic core compoundcitations
- 2008Films from spruce galactoglucomannan blended with poly(vinyl alcohol), corn arabinoxylan, and konjac glucomannan
Places of action
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article
The Hydrophobicity of Lignocellulosic Fiber Network Can Be Enhanced with Suberin Fatty Acids
Abstract
Suberin fatty acids were extracted from outer bark of Silver birch (Betula pendula Roth.) using an isopropanolic sodium hydroxide solution. Laboratory sheets composed of lignocellulosic fiber networks were prepared from unbleached and unrefined softwood kraft pulp and further impregnated with suberin fatty acid monomers and cured with maleic anhydride in ethanol solution. The treatment resulted in hydrophobic surfaces, in which the contact angles remained over 120 degrees during the entire measurement. The fiber network also retained its water vapor permeability and enhanced fiber–fiber bonding resulted in improved tensile strength of the sheets. Scanning electron microscopy (SEM) images revealed that the curing agent, together with suberin fatty acids, was evenly distributed on the fiber surfaces and smoothing occurred over the wrinkled microfibrillar structure. High concentrations of the curing agent resulted in globular structures containing betulinol derivates as revealed with time-of-flight secondary ion mass spectrometry (ToF-SIMS). Also, the larger amount of suberin fatty acid monomers slightly impaired the optical properties of sheets.