Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2025
Forfattere
Wiesław Olek Waldemar Perdoch Andreas Treu Jerzy Majka Łukasz Czajkowski Bartłomiej Mazela Jerzy WeresSammendrag
The interaction of cellulose paper with water is a major hindrance to its broader application. This study, which introduces a novel approach to understand water vapor difusion in both untreated and treated paper, aims to identify the difusion coefcient, a crucial property in improving the hydrophobicity of paper. The treatment process utilized an aqueous solution of starch or starch modifed with methyltrimethoxysilane (MTMS). While the initial sorption method is frequently used to determine the difusion coefcient, this study found that it could lead to signifcant errors due to the non-Fickian behavior exhibited by lignocellulosic materials. This behavior causes that the hygroscopic equilibrium is not instantly obtained by surface of paper. It also induces slowing down moisture difusion in its fnal stage due to molecular relaxation. For the frst time, the modifed convective boundary condition was introduced into the moisture difusion model in paper materials. The results from vapor sorption experiments demonstrated this non-Fickian behavior, particularly at high values of air relative humidity. The study also revealed that the commonly applied frst kind boundary condition is not applicable, even for thin paper samples, inhibiting the use of the initial sorption method for determining the difusion coefcient. While the treatment with starch and MTMS signifcantly improved the hydrophobic properties of paper, it didn’t alter substantially its hygroscopic properties, potentially due to not blocking active sorption sites of cellulose fbers. This research underscores the need for further investigation into the chemical modifcation of cellulose fbers to improve the hydrophobicity of paper.
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Redaktører
Randi HesjedalSammendrag
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Forfattere
Gunnhild SøgaardSammendrag
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Forfattere
Gunnhild SøgaardSammendrag
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Forfattere
Gunnhild SøgaardSammendrag
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Forfattere
Peter Waldner Katrin Meusburger Bruno de Vos Henning Meesenburg Kai Schwärzel Carmen Iacoban Zoran Galic Arne Verstraeten Andreas Schmitz Aldo Marchetto Nicholas Clarke Heleen Deroo Nathalie Cools Anne Thimonier Vera Fadrhonsovà Holger Sennhenn-Reulen Anna Andreetta Elena Vanguelova Antti-Jussi Lindroos Anita Zolles Tiina M. NieminenSammendrag
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Forfattere
Ralf RautenbergerSammendrag
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