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Influence of fluorobenzene mass transfer on the qualities of poly-α-methylstyrene shells
Polymer shells prepared by the microencapsulation technique with perfect sphericity and defect-free surface finish are demanded in inertial confinement fusion (ICF) experiments. The sphericity and surface finish are some of the hardest specifications to fulfill. Driven by the need to improve qualiti...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9077777/ https://www.ncbi.nlm.nih.gov/pubmed/35542901 http://dx.doi.org/10.1039/c7ra09799a |
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author | Qiang, Chen Sufen, Chen Meifang, Liu Dawei, Pan Bo, Li Zhanwen, Zhang Xiaobo, Qi |
author_facet | Qiang, Chen Sufen, Chen Meifang, Liu Dawei, Pan Bo, Li Zhanwen, Zhang Xiaobo, Qi |
author_sort | Qiang, Chen |
collection | PubMed |
description | Polymer shells prepared by the microencapsulation technique with perfect sphericity and defect-free surface finish are demanded in inertial confinement fusion (ICF) experiments. The sphericity and surface finish are some of the hardest specifications to fulfill. Driven by the need to improve qualities of the polymer shells to meet the critical specifications, the effects of fluorobenzene (FB) mass transfer rate on sphericity and surface finish were investigated and the mechanisms of the effects of FB mass transfer on sphericity and surface finish of poly-α-methylstyrene (PAMS) were also discussed. The sphericity and surface finish of the PAMS shells are greatly improved by decreasing the FB mass transfer rate. The calculative frequency of the final shells with an out-of-round (δ(OOR)) of less than 2 μm increases from 30% to 80%, while the power spectra density (PSD) plot gets closer to the specification of the national ignition facility (NIF). The tracking experiments show that the curing process is extended and the percolation transition is also postponed by decreasing the FB mass transfer rate. Therefore, the interfacial tension can work sufficiently, helping make double droplets become spherical, since the double droplets’ stay in the liquid state is effectively extended. Moreover, the Marangoni instabilities at the O–W2 boundary are also restrained by controlling the mass transfer, due to the diffusivity of FB being slowed down. Both the results and methods presented in this work provide a more in-depth understanding of the curing process and the mass transfer, to the benefit of fabricating polymer shells with high sphericity and defect-free surface finish used in ICF experiments. |
format | Online Article Text |
id | pubmed-9077777 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90777772022-05-09 Influence of fluorobenzene mass transfer on the qualities of poly-α-methylstyrene shells Qiang, Chen Sufen, Chen Meifang, Liu Dawei, Pan Bo, Li Zhanwen, Zhang Xiaobo, Qi RSC Adv Chemistry Polymer shells prepared by the microencapsulation technique with perfect sphericity and defect-free surface finish are demanded in inertial confinement fusion (ICF) experiments. The sphericity and surface finish are some of the hardest specifications to fulfill. Driven by the need to improve qualities of the polymer shells to meet the critical specifications, the effects of fluorobenzene (FB) mass transfer rate on sphericity and surface finish were investigated and the mechanisms of the effects of FB mass transfer on sphericity and surface finish of poly-α-methylstyrene (PAMS) were also discussed. The sphericity and surface finish of the PAMS shells are greatly improved by decreasing the FB mass transfer rate. The calculative frequency of the final shells with an out-of-round (δ(OOR)) of less than 2 μm increases from 30% to 80%, while the power spectra density (PSD) plot gets closer to the specification of the national ignition facility (NIF). The tracking experiments show that the curing process is extended and the percolation transition is also postponed by decreasing the FB mass transfer rate. Therefore, the interfacial tension can work sufficiently, helping make double droplets become spherical, since the double droplets’ stay in the liquid state is effectively extended. Moreover, the Marangoni instabilities at the O–W2 boundary are also restrained by controlling the mass transfer, due to the diffusivity of FB being slowed down. Both the results and methods presented in this work provide a more in-depth understanding of the curing process and the mass transfer, to the benefit of fabricating polymer shells with high sphericity and defect-free surface finish used in ICF experiments. The Royal Society of Chemistry 2018-01-19 /pmc/articles/PMC9077777/ /pubmed/35542901 http://dx.doi.org/10.1039/c7ra09799a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Qiang, Chen Sufen, Chen Meifang, Liu Dawei, Pan Bo, Li Zhanwen, Zhang Xiaobo, Qi Influence of fluorobenzene mass transfer on the qualities of poly-α-methylstyrene shells |
title | Influence of fluorobenzene mass transfer on the qualities of poly-α-methylstyrene shells |
title_full | Influence of fluorobenzene mass transfer on the qualities of poly-α-methylstyrene shells |
title_fullStr | Influence of fluorobenzene mass transfer on the qualities of poly-α-methylstyrene shells |
title_full_unstemmed | Influence of fluorobenzene mass transfer on the qualities of poly-α-methylstyrene shells |
title_short | Influence of fluorobenzene mass transfer on the qualities of poly-α-methylstyrene shells |
title_sort | influence of fluorobenzene mass transfer on the qualities of poly-α-methylstyrene shells |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9077777/ https://www.ncbi.nlm.nih.gov/pubmed/35542901 http://dx.doi.org/10.1039/c7ra09799a |
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