IMECH-IR  > 国家微重力实验室
Experimental Study of Gravitation Effects on Liquid Crystal Phase Transitions in Polydisperse Aqueous Suspensions of Mg Al-2 Layered Double Hydroxide
Chen Y; Zhang L; Sun DJ; Sun ZW(孙址伟); Xu SH(徐升华); Sun, DJ (reprint author), Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China.
Source PublicationMICROGRAVITY SCIENCE AND TECHNOLOGY
2016
Volume28Issue:2Pages:95-100
ISSN0938-0108
AbstractEffects of gravity on liquid crystal phase transitions (LCPT) in polydisperse aqueous suspensions of Mg Al-2 layered double hydroxide (LDHs) were studied under normal gravity condition. Samples with different suspension concentration (SC) were tested for 15 days and the relevant changes in samples were observed through crossed polarizers. Our results showed: (a) the samples were still isotropic (I) when SC < 23 wt%; (b) when 23 wt% < SC < 30 wt%, a shear-induced birefringence appeared after preparation, and finally coexistence of four phases was reached, including an opaque isotropic top phase, a birefringent middle phase, a faint birefringence phase and a sediment layer of larger platelets resulting from the high polydispersity; (c) when SC > 30 wt%, the suspensions were in a gel state, and the gel network slowed down the LCPT. The above different behavior of phase transitions is apparently due to the concentration gradient and fractionation caused by gravity. This study provides guidance on how to select samples of LDHs suspensions for LCPT used in the upcoming experiment in the space program SJ-10 satellite.
KeywordThermocapillary Convection Cylindrical Annulus Payload Space Experiment Microgravity Fluid Physics
DOI10.1007/s12217-015-9477-2
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000376652000003
WOS KeywordThermocapillary convection ; Cylindrical annulus ; Payload ; Space experiment ; Microgravity fluid physics
WOS Research AreaEngineering ; Thermodynamics ; Mechanics
WOS SubjectEngineering, Aerospace ; Thermodynamics ; Mechanics
Funding OrganizationWe are grateful for the National Natural Science Foundation of China (Grant 21333005). We also thank the editor and reviewers for the useful comments and suggestions.
DepartmentNML复杂流体
Classification二类
RankingFalse
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59560
Collection国家微重力实验室
Corresponding AuthorSun, DJ (reprint author), Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China.
Recommended Citation
GB/T 7714
Chen Y,Zhang L,Sun DJ,et al. Experimental Study of Gravitation Effects on Liquid Crystal Phase Transitions in Polydisperse Aqueous Suspensions of Mg Al-2 Layered Double Hydroxide[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2016,28(2):95-100.
APA Chen Y,Zhang L,Sun DJ,孙址伟,徐升华,&Sun, DJ .(2016).Experimental Study of Gravitation Effects on Liquid Crystal Phase Transitions in Polydisperse Aqueous Suspensions of Mg Al-2 Layered Double Hydroxide.MICROGRAVITY SCIENCE AND TECHNOLOGY,28(2),95-100.
MLA Chen Y,et al."Experimental Study of Gravitation Effects on Liquid Crystal Phase Transitions in Polydisperse Aqueous Suspensions of Mg Al-2 Layered Double Hydroxide".MICROGRAVITY SCIENCE AND TECHNOLOGY 28.2(2016):95-100.
Files in This Item: Download All
File Name/Size DocType Version Access License
a2016-134.pdf(479KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen Y]'s Articles
[Zhang L]'s Articles
[Sun DJ]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen Y]'s Articles
[Zhang L]'s Articles
[Sun DJ]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen Y]'s Articles
[Zhang L]'s Articles
[Sun DJ]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: a2016-134.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.