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Interfacial undercooling in solidification of colloidal suspensions: analyses with quantitative measurements

Interfacial undercooling in the complex solidification of colloidal suspensions is of significance and remains a puzzling problem. Two types of interfacial undercooling are supposed to be involved in the freezing of colloidal suspensions, i.e., solute constitutional supercooling (SCS) caused by addi...

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Autores principales: You, Jiaxue, Wang, Lilin, Wang, Zhijun, Li, Junjie, Wang, Jincheng, Lin, Xin, Huang, Weidong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4916454/
https://www.ncbi.nlm.nih.gov/pubmed/27329394
http://dx.doi.org/10.1038/srep28434
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author You, Jiaxue
Wang, Lilin
Wang, Zhijun
Li, Junjie
Wang, Jincheng
Lin, Xin
Huang, Weidong
author_facet You, Jiaxue
Wang, Lilin
Wang, Zhijun
Li, Junjie
Wang, Jincheng
Lin, Xin
Huang, Weidong
author_sort You, Jiaxue
collection PubMed
description Interfacial undercooling in the complex solidification of colloidal suspensions is of significance and remains a puzzling problem. Two types of interfacial undercooling are supposed to be involved in the freezing of colloidal suspensions, i.e., solute constitutional supercooling (SCS) caused by additives in the solvent and particulate constitutional supercooling (PCS) caused by particles. However, quantitative identification of the interfacial undercooling in the solidification of colloidal suspensions, is still absent; thus, the question of which type of undercooling is dominant in this complex system remains unanswered. Here, we quantitatively measured the static and dynamic interface undercoolings of SCS and PCS in ideal and practical colloidal systems. We show that the interfacial undercooling primarily comes from SCS caused by the additives in the solvent, while PCS is minor. This finding implies that the thermodynamic effect of particles from the PCS is not the fundamental physical mechanism for pattern formation of cellular growth and lamellar structure in the solidification of colloidal suspensions, a general case of ice-templating method. Instead, the patterns in the ice-templating method can be controlled effectively by adjusting the additives.
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spelling pubmed-49164542016-06-27 Interfacial undercooling in solidification of colloidal suspensions: analyses with quantitative measurements You, Jiaxue Wang, Lilin Wang, Zhijun Li, Junjie Wang, Jincheng Lin, Xin Huang, Weidong Sci Rep Article Interfacial undercooling in the complex solidification of colloidal suspensions is of significance and remains a puzzling problem. Two types of interfacial undercooling are supposed to be involved in the freezing of colloidal suspensions, i.e., solute constitutional supercooling (SCS) caused by additives in the solvent and particulate constitutional supercooling (PCS) caused by particles. However, quantitative identification of the interfacial undercooling in the solidification of colloidal suspensions, is still absent; thus, the question of which type of undercooling is dominant in this complex system remains unanswered. Here, we quantitatively measured the static and dynamic interface undercoolings of SCS and PCS in ideal and practical colloidal systems. We show that the interfacial undercooling primarily comes from SCS caused by the additives in the solvent, while PCS is minor. This finding implies that the thermodynamic effect of particles from the PCS is not the fundamental physical mechanism for pattern formation of cellular growth and lamellar structure in the solidification of colloidal suspensions, a general case of ice-templating method. Instead, the patterns in the ice-templating method can be controlled effectively by adjusting the additives. Nature Publishing Group 2016-06-22 /pmc/articles/PMC4916454/ /pubmed/27329394 http://dx.doi.org/10.1038/srep28434 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
You, Jiaxue
Wang, Lilin
Wang, Zhijun
Li, Junjie
Wang, Jincheng
Lin, Xin
Huang, Weidong
Interfacial undercooling in solidification of colloidal suspensions: analyses with quantitative measurements
title Interfacial undercooling in solidification of colloidal suspensions: analyses with quantitative measurements
title_full Interfacial undercooling in solidification of colloidal suspensions: analyses with quantitative measurements
title_fullStr Interfacial undercooling in solidification of colloidal suspensions: analyses with quantitative measurements
title_full_unstemmed Interfacial undercooling in solidification of colloidal suspensions: analyses with quantitative measurements
title_short Interfacial undercooling in solidification of colloidal suspensions: analyses with quantitative measurements
title_sort interfacial undercooling in solidification of colloidal suspensions: analyses with quantitative measurements
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4916454/
https://www.ncbi.nlm.nih.gov/pubmed/27329394
http://dx.doi.org/10.1038/srep28434
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