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The Effect of Pore Volume on the Behavior of Polyurethane-Foam-Based Pressure Sensors
In this work, three different polyurethane (PU) foams were prepared by mixing commonly used isocyanate and polyol with different isocyanate indices (1.0:0.8, 1.0:1.0, 1.0:1.1). Then, the prepared polyurethane foam samples were coated by dip-coating with a fixed ratio of nitrogen-doped, bamboo-shaped...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9459917/ https://www.ncbi.nlm.nih.gov/pubmed/36080726 http://dx.doi.org/10.3390/polym14173652 |
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author | Nabeel, Mohammed Varga, Miklós Kuzsella, László Fiser, Béla Vanyorek, László Viskolcz, Béla |
author_facet | Nabeel, Mohammed Varga, Miklós Kuzsella, László Fiser, Béla Vanyorek, László Viskolcz, Béla |
author_sort | Nabeel, Mohammed |
collection | PubMed |
description | In this work, three different polyurethane (PU) foams were prepared by mixing commonly used isocyanate and polyol with different isocyanate indices (1.0:0.8, 1.0:1.0, 1.0:1.1). Then, the prepared polyurethane foam samples were coated by dip-coating with a fixed ratio of nitrogen-doped, bamboo-shaped carbon nanotubes (N-BCNTs) to obtain pressure sensor systems. The effect of the isocyanate index on the initial resistance, pressure sensitivity, gauge factor (GF), and repeatability of the N-BCNT/PU pressure sensor systems was studied. The pore volume was crucial in finetuning the PU-foam-based sensors ability to detect large strain. Furthermore, large pore volume provides suitable spatial pores for elastic deformation. Sensors with large pore volume can detect pressure of less than 3 kPa, which could be related to their sensitivity in the high range. Moreover, by increasing the pore volume, the electrical percolation threshold can be achieved with a minimal addition of nanofillers. On the other hand, PU with a smaller pore volume is more suitable to detect pressure above 3 kPa. The developed sensors have been successfully applied in many applications, such as motion monitoring and vibration detection. |
format | Online Article Text |
id | pubmed-9459917 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-94599172022-09-10 The Effect of Pore Volume on the Behavior of Polyurethane-Foam-Based Pressure Sensors Nabeel, Mohammed Varga, Miklós Kuzsella, László Fiser, Béla Vanyorek, László Viskolcz, Béla Polymers (Basel) Article In this work, three different polyurethane (PU) foams were prepared by mixing commonly used isocyanate and polyol with different isocyanate indices (1.0:0.8, 1.0:1.0, 1.0:1.1). Then, the prepared polyurethane foam samples were coated by dip-coating with a fixed ratio of nitrogen-doped, bamboo-shaped carbon nanotubes (N-BCNTs) to obtain pressure sensor systems. The effect of the isocyanate index on the initial resistance, pressure sensitivity, gauge factor (GF), and repeatability of the N-BCNT/PU pressure sensor systems was studied. The pore volume was crucial in finetuning the PU-foam-based sensors ability to detect large strain. Furthermore, large pore volume provides suitable spatial pores for elastic deformation. Sensors with large pore volume can detect pressure of less than 3 kPa, which could be related to their sensitivity in the high range. Moreover, by increasing the pore volume, the electrical percolation threshold can be achieved with a minimal addition of nanofillers. On the other hand, PU with a smaller pore volume is more suitable to detect pressure above 3 kPa. The developed sensors have been successfully applied in many applications, such as motion monitoring and vibration detection. MDPI 2022-09-02 /pmc/articles/PMC9459917/ /pubmed/36080726 http://dx.doi.org/10.3390/polym14173652 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Nabeel, Mohammed Varga, Miklós Kuzsella, László Fiser, Béla Vanyorek, László Viskolcz, Béla The Effect of Pore Volume on the Behavior of Polyurethane-Foam-Based Pressure Sensors |
title | The Effect of Pore Volume on the Behavior of Polyurethane-Foam-Based Pressure Sensors |
title_full | The Effect of Pore Volume on the Behavior of Polyurethane-Foam-Based Pressure Sensors |
title_fullStr | The Effect of Pore Volume on the Behavior of Polyurethane-Foam-Based Pressure Sensors |
title_full_unstemmed | The Effect of Pore Volume on the Behavior of Polyurethane-Foam-Based Pressure Sensors |
title_short | The Effect of Pore Volume on the Behavior of Polyurethane-Foam-Based Pressure Sensors |
title_sort | effect of pore volume on the behavior of polyurethane-foam-based pressure sensors |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9459917/ https://www.ncbi.nlm.nih.gov/pubmed/36080726 http://dx.doi.org/10.3390/polym14173652 |
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