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preparations of organo-vermiculite with large interlayer space by hot solution and ball milling methods: a comparative study
Wang Lan; Chen Zhaoyang; Wang Xu; Yan Shiyou; Wang Junhua; Fan Yanwei; Chen, ZY
2011
Source PublicationApplied Clay Science
ISSN1691317
Volume51Issue:1-2Pages:151-157
AbstractThe intercalation of alkylammonium ions into vermiculite (VMT) to improve the interior structure of VMT has evolved into a subject of tremendous interest. The Na+-exchanged vermiculite (Na-VMT) prepared from the VMT in Xinjiang area (China), served as a host for intercalation with cetyl-trimethylammonium (CTA+) to prepare organo-vermiculites (OVMTs) by a typical hot solution method (OVMT (H)) and a novel ball milling method (OVMT (M)) under the optimized conditions confirmed by orthogonal experimental designs. The two methods employed thermal energy and mechanical energy respectively to drive the CTA+ cations into the interlayer space of layers and to carry out the cation exchange reaction. From X-ray diffraction (XRD) patterns, scanning electron microscopy (SEM) images and thermogravimetric analysis (TGA) results, the Na-VMTs were structurally modified, and the OVMTs showed remarkably large interlayer spaces, in which alkyl chains built paraffin-type bilayer arrangements nearly perpendicular to silicate layers. However, hot solution and ball milling methods showed different behaviors. The interlayer distance of the OVMT (M) (4.283nm) was larger than that of the OVMT (H) (4.052nm), indicating that the tilting angle of alkyl chains in the former was larger than that in the latter. Additionally, the hot solution treatment retained the morphology of the layers and reduced the surface energy of the VMT, whereas the ball milling method caused layers to twist and led to high residual surface energy on the particles, as well as a higher content of organic compounds and lower thermal stability for the product.
KeywordOrgano-vermiculite Interlayer Space Alkylammonium Orthogonal Experimental Design Ball Milling
Subject AreaChemistry ; Materials Science ; Mineralogy
DOI10.1016/j.clay.2010.11.023
Indexed BySCI
WOS IDWOS:000286955900022
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/1432
Collection材料物理与化学研究室
Corresponding AuthorChen, ZY
AffiliationChinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China;Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Green Chem & Organ Synth, Urumqi 830011, Peoples R China;Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Peoples R China
Recommended Citation
GB/T 7714
Wang Lan,Chen Zhaoyang,Wang Xu,et al. preparations of organo-vermiculite with large interlayer space by hot solution and ball milling methods: a comparative study[J]. Applied Clay Science,2011,51(1-2):151-157.
APA Wang Lan.,Chen Zhaoyang.,Wang Xu.,Yan Shiyou.,Wang Junhua.,...&Chen, ZY.(2011).preparations of organo-vermiculite with large interlayer space by hot solution and ball milling methods: a comparative study.Applied Clay Science,51(1-2),151-157.
MLA Wang Lan,et al."preparations of organo-vermiculite with large interlayer space by hot solution and ball milling methods: a comparative study".Applied Clay Science 51.1-2(2011):151-157.
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