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Pulp Fines—Characterization, Sheet Formation, and Comparison to Microfibrillated Cellulose
In the pulp and paper industry different types of pulp or fiber fines are generated during the pulping (primary fines, mechanical fines), and/or the refining process (secondary fines). Besides fibers, these cellulosic microparticles are a further component of the paper network. Fines, which are defi...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6418736/ https://www.ncbi.nlm.nih.gov/pubmed/30971045 http://dx.doi.org/10.3390/polym9080366 |
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author | Fischer, Wolfgang Johann Mayr, Melanie Spirk, Stefan Reishofer, David Jagiello, Lukas Andreas Schmiedt, Romana Colson, Jerome Zankel, Armin Bauer, Wolfgang |
author_facet | Fischer, Wolfgang Johann Mayr, Melanie Spirk, Stefan Reishofer, David Jagiello, Lukas Andreas Schmiedt, Romana Colson, Jerome Zankel, Armin Bauer, Wolfgang |
author_sort | Fischer, Wolfgang Johann |
collection | PubMed |
description | In the pulp and paper industry different types of pulp or fiber fines are generated during the pulping (primary fines, mechanical fines), and/or the refining process (secondary fines). Besides fibers, these cellulosic microparticles are a further component of the paper network. Fines, which are defined as the fraction of pulp that is able to pass through a mesh screen or a perforated plate having a hole diameter of 76 μm, are known to influence the properties of the final paper product. To better understand the effect and properties of this material, fines have to be separated from the pulp and investigated as an independent material. In the present study, fines are isolated from the pulp fraction by means of a laboratory pressure screen. To allow for further processing, the solids content of the produced fines suspension was increased using dissolved air flotation. Morphological properties of different types of fines and other cellulosic microparticles, such as microfibrillated celluloses (MFC) are determined and compared to each other. Furthermore, handsheets are prepared from these materials and properties, such as apparent density, contact angle, modulus of elasticity, and strain are measured giving similar results for the analyzed types of fines in comparison to the tested MFC grades. The analysis of the properties of fiber fines contributes on the one hand to a better understanding of how these materials influences the final paper products, and on the other hand, helps in identifying other potential applications of this material. |
format | Online Article Text |
id | pubmed-6418736 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64187362019-04-02 Pulp Fines—Characterization, Sheet Formation, and Comparison to Microfibrillated Cellulose Fischer, Wolfgang Johann Mayr, Melanie Spirk, Stefan Reishofer, David Jagiello, Lukas Andreas Schmiedt, Romana Colson, Jerome Zankel, Armin Bauer, Wolfgang Polymers (Basel) Article In the pulp and paper industry different types of pulp or fiber fines are generated during the pulping (primary fines, mechanical fines), and/or the refining process (secondary fines). Besides fibers, these cellulosic microparticles are a further component of the paper network. Fines, which are defined as the fraction of pulp that is able to pass through a mesh screen or a perforated plate having a hole diameter of 76 μm, are known to influence the properties of the final paper product. To better understand the effect and properties of this material, fines have to be separated from the pulp and investigated as an independent material. In the present study, fines are isolated from the pulp fraction by means of a laboratory pressure screen. To allow for further processing, the solids content of the produced fines suspension was increased using dissolved air flotation. Morphological properties of different types of fines and other cellulosic microparticles, such as microfibrillated celluloses (MFC) are determined and compared to each other. Furthermore, handsheets are prepared from these materials and properties, such as apparent density, contact angle, modulus of elasticity, and strain are measured giving similar results for the analyzed types of fines in comparison to the tested MFC grades. The analysis of the properties of fiber fines contributes on the one hand to a better understanding of how these materials influences the final paper products, and on the other hand, helps in identifying other potential applications of this material. MDPI 2017-08-17 /pmc/articles/PMC6418736/ /pubmed/30971045 http://dx.doi.org/10.3390/polym9080366 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Fischer, Wolfgang Johann Mayr, Melanie Spirk, Stefan Reishofer, David Jagiello, Lukas Andreas Schmiedt, Romana Colson, Jerome Zankel, Armin Bauer, Wolfgang Pulp Fines—Characterization, Sheet Formation, and Comparison to Microfibrillated Cellulose |
title | Pulp Fines—Characterization, Sheet Formation, and Comparison to Microfibrillated Cellulose |
title_full | Pulp Fines—Characterization, Sheet Formation, and Comparison to Microfibrillated Cellulose |
title_fullStr | Pulp Fines—Characterization, Sheet Formation, and Comparison to Microfibrillated Cellulose |
title_full_unstemmed | Pulp Fines—Characterization, Sheet Formation, and Comparison to Microfibrillated Cellulose |
title_short | Pulp Fines—Characterization, Sheet Formation, and Comparison to Microfibrillated Cellulose |
title_sort | pulp fines—characterization, sheet formation, and comparison to microfibrillated cellulose |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6418736/ https://www.ncbi.nlm.nih.gov/pubmed/30971045 http://dx.doi.org/10.3390/polym9080366 |
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