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Thermal debinding behavior of a low-toxic DMAA polymer for gelcast ceramic parts based on TG-FTIR and kinetic modeling
In this work, the pyrolysis characteristics of a low-toxic N,N-dimethylacrylamide (DMAA) gel polymer was investigated through nonisothermal thermogravimetry (TG) and TG-FTIR analyses. Moreover, the thermal debinding kinetics of gelcast SiAlON ceramic parts was studied through three different kinetic...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9061881/ https://www.ncbi.nlm.nih.gov/pubmed/35518678 http://dx.doi.org/10.1039/c9ra00305c |
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author | Li, Jing Zhang, Chuanfu Yin, Ruiming Zhang, Wenhai |
author_facet | Li, Jing Zhang, Chuanfu Yin, Ruiming Zhang, Wenhai |
author_sort | Li, Jing |
collection | PubMed |
description | In this work, the pyrolysis characteristics of a low-toxic N,N-dimethylacrylamide (DMAA) gel polymer was investigated through nonisothermal thermogravimetry (TG) and TG-FTIR analyses. Moreover, the thermal debinding kinetics of gelcast SiAlON ceramic parts was studied through three different kinetic models: the Coats–Redfern (C–R) method, distributed activation energy model (DAEM) and three-Gaussian-DAEM-reaction model (3-DAEM). The rationality and adaptability of the three models to the thermal debinding kinetics study were analyzed by comparison with experimental data. The results showed that three mass loss zones were observed in the temperature ranges of 100–320 °C, 320–520 °C and 520–600 °C, respectively, and the main pyrolysis gas products were CO(2), H(2)O and CH(4). The conversion rate (α) curves calculated by 3-DAEM were more consistent with the experimental values than those calculated with the C–R and DAEM methods. The fitting quality parameter (Fit%) was less than 2.63%, and the reaction rate (dα/dT) curves calculated by 3-DAEM were bimodal distribution curves, which were in good agreement with the experimental results. The kinetic parameters (E(0,i), k(0,i) and σ(i)) of the global thermal debinding process calculated by 3-DAEM were 116.00–145.79 kJ mol(−1), 1.10 × 10(9) s(−1) and 1.67–43.25 kJ mol(−1), respectively. It is anticipated that the study achievements can be used to help predict the thermal debinding behavior and design a reasonable debinding technology for the gelcasting of ceramic parts. |
format | Online Article Text |
id | pubmed-9061881 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90618812022-05-04 Thermal debinding behavior of a low-toxic DMAA polymer for gelcast ceramic parts based on TG-FTIR and kinetic modeling Li, Jing Zhang, Chuanfu Yin, Ruiming Zhang, Wenhai RSC Adv Chemistry In this work, the pyrolysis characteristics of a low-toxic N,N-dimethylacrylamide (DMAA) gel polymer was investigated through nonisothermal thermogravimetry (TG) and TG-FTIR analyses. Moreover, the thermal debinding kinetics of gelcast SiAlON ceramic parts was studied through three different kinetic models: the Coats–Redfern (C–R) method, distributed activation energy model (DAEM) and three-Gaussian-DAEM-reaction model (3-DAEM). The rationality and adaptability of the three models to the thermal debinding kinetics study were analyzed by comparison with experimental data. The results showed that three mass loss zones were observed in the temperature ranges of 100–320 °C, 320–520 °C and 520–600 °C, respectively, and the main pyrolysis gas products were CO(2), H(2)O and CH(4). The conversion rate (α) curves calculated by 3-DAEM were more consistent with the experimental values than those calculated with the C–R and DAEM methods. The fitting quality parameter (Fit%) was less than 2.63%, and the reaction rate (dα/dT) curves calculated by 3-DAEM were bimodal distribution curves, which were in good agreement with the experimental results. The kinetic parameters (E(0,i), k(0,i) and σ(i)) of the global thermal debinding process calculated by 3-DAEM were 116.00–145.79 kJ mol(−1), 1.10 × 10(9) s(−1) and 1.67–43.25 kJ mol(−1), respectively. It is anticipated that the study achievements can be used to help predict the thermal debinding behavior and design a reasonable debinding technology for the gelcasting of ceramic parts. The Royal Society of Chemistry 2019-03-14 /pmc/articles/PMC9061881/ /pubmed/35518678 http://dx.doi.org/10.1039/c9ra00305c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Li, Jing Zhang, Chuanfu Yin, Ruiming Zhang, Wenhai Thermal debinding behavior of a low-toxic DMAA polymer for gelcast ceramic parts based on TG-FTIR and kinetic modeling |
title | Thermal debinding behavior of a low-toxic DMAA polymer for gelcast ceramic parts based on TG-FTIR and kinetic modeling |
title_full | Thermal debinding behavior of a low-toxic DMAA polymer for gelcast ceramic parts based on TG-FTIR and kinetic modeling |
title_fullStr | Thermal debinding behavior of a low-toxic DMAA polymer for gelcast ceramic parts based on TG-FTIR and kinetic modeling |
title_full_unstemmed | Thermal debinding behavior of a low-toxic DMAA polymer for gelcast ceramic parts based on TG-FTIR and kinetic modeling |
title_short | Thermal debinding behavior of a low-toxic DMAA polymer for gelcast ceramic parts based on TG-FTIR and kinetic modeling |
title_sort | thermal debinding behavior of a low-toxic dmaa polymer for gelcast ceramic parts based on tg-ftir and kinetic modeling |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9061881/ https://www.ncbi.nlm.nih.gov/pubmed/35518678 http://dx.doi.org/10.1039/c9ra00305c |
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