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A Novel Simple Approach to Material Parameters from Commonly Accessible Rheometer Data
When characterizing the viscoelastic properties of polymers, shear rheological measurements are commonly the method of choice. These properties are known to affect extrusion and nozzle-based processes such as fiber melt spinning, cast film extrusion and 3D-printing. However, an adequate characteriza...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7362223/ https://www.ncbi.nlm.nih.gov/pubmed/32503125 http://dx.doi.org/10.3390/polym12061276 |
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author | Schrüfer, S. Sonnleitner, D. Lang, G. Schubert, D. W. |
author_facet | Schrüfer, S. Sonnleitner, D. Lang, G. Schubert, D. W. |
author_sort | Schrüfer, S. |
collection | PubMed |
description | When characterizing the viscoelastic properties of polymers, shear rheological measurements are commonly the method of choice. These properties are known to affect extrusion and nozzle-based processes such as fiber melt spinning, cast film extrusion and 3D-printing. However, an adequate characterization of shear thinning polymers can be challenging and still insufficient to not only describe but predict process relevant influences. Furthermore, the evaluation of rheological model systems in literature is mostly based on stress–relaxation experiments, which are rarely available for various polymeric materials. Therefore, a simple approach is presented, that can be used to evaluate and benchmark a wide range of rheological model systems based on commonly accessible frequency sweep data. The approach is validated by analyzing alginate PH176 solutions of various concentrations, a thermoplastic poly-urethane (TPU) Elastollan 1180A melt, the liquid silicon rubber Elastosil 7670 and a polycaprolactone (PCL) fiber-alginate composite system. The used rheological model systems, consisting of simple springs and dashpots, are suitable for the description of complex, viscoelastic material properties that can be observed for polymer solutions and gel-like systems. After revealing a suitable model system for describing those material properties, the determination and evaluation of relevant model parameters can take place. We present a detailed guideline for the systematic parameter revelation using alginate solutions of different concentrations as example. Furthermore, a starting point for future correlations of strut spreading in 3D-bioprinting and model parameters is revealed. This work establishes the basis for a better understanding and potential predictability of key parameters for various fabrication techniques. |
format | Online Article Text |
id | pubmed-7362223 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-73622232020-07-21 A Novel Simple Approach to Material Parameters from Commonly Accessible Rheometer Data Schrüfer, S. Sonnleitner, D. Lang, G. Schubert, D. W. Polymers (Basel) Article When characterizing the viscoelastic properties of polymers, shear rheological measurements are commonly the method of choice. These properties are known to affect extrusion and nozzle-based processes such as fiber melt spinning, cast film extrusion and 3D-printing. However, an adequate characterization of shear thinning polymers can be challenging and still insufficient to not only describe but predict process relevant influences. Furthermore, the evaluation of rheological model systems in literature is mostly based on stress–relaxation experiments, which are rarely available for various polymeric materials. Therefore, a simple approach is presented, that can be used to evaluate and benchmark a wide range of rheological model systems based on commonly accessible frequency sweep data. The approach is validated by analyzing alginate PH176 solutions of various concentrations, a thermoplastic poly-urethane (TPU) Elastollan 1180A melt, the liquid silicon rubber Elastosil 7670 and a polycaprolactone (PCL) fiber-alginate composite system. The used rheological model systems, consisting of simple springs and dashpots, are suitable for the description of complex, viscoelastic material properties that can be observed for polymer solutions and gel-like systems. After revealing a suitable model system for describing those material properties, the determination and evaluation of relevant model parameters can take place. We present a detailed guideline for the systematic parameter revelation using alginate solutions of different concentrations as example. Furthermore, a starting point for future correlations of strut spreading in 3D-bioprinting and model parameters is revealed. This work establishes the basis for a better understanding and potential predictability of key parameters for various fabrication techniques. MDPI 2020-06-03 /pmc/articles/PMC7362223/ /pubmed/32503125 http://dx.doi.org/10.3390/polym12061276 Text en © 2020 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 Schrüfer, S. Sonnleitner, D. Lang, G. Schubert, D. W. A Novel Simple Approach to Material Parameters from Commonly Accessible Rheometer Data |
title | A Novel Simple Approach to Material Parameters from Commonly Accessible Rheometer Data |
title_full | A Novel Simple Approach to Material Parameters from Commonly Accessible Rheometer Data |
title_fullStr | A Novel Simple Approach to Material Parameters from Commonly Accessible Rheometer Data |
title_full_unstemmed | A Novel Simple Approach to Material Parameters from Commonly Accessible Rheometer Data |
title_short | A Novel Simple Approach to Material Parameters from Commonly Accessible Rheometer Data |
title_sort | novel simple approach to material parameters from commonly accessible rheometer data |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7362223/ https://www.ncbi.nlm.nih.gov/pubmed/32503125 http://dx.doi.org/10.3390/polym12061276 |
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