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| The anisotropic characteristics of natural fibrous sepiolite as revealed by contact angle, surface free energy, AFM and molecular dynamics simulation | |
| Alternative Title | Colloid Surf. A-Physicochem. Eng. Asp. |
| Benli, Birgul1; Du, Hao2; Celik, Mehmet Sabri1 | |
| 2012-08-20 | |
| Source Publication | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| ISSN | 0927-7757 |
| Volume | 408Issue:AugustPages:22-31 |
| Abstract | In this study, the anisotropic character of natural sepiolite was revealed by a combination of techniques involving contact angle measurements, Atomic Force Microscopy (AFM), and molecular dynamics (MD) simulations. Capillary rise technique was used to determine the change in contact angle values for several wetting liquids and calculate the surface free energy and acid/base components of sepiolite. The surface heterogeneity of sepiolite for a single fiber surface corresponding to roughness parameters was calculated from the AFM images. Finally, the interactions between water molecules and sepiolite mineral surfaces were also computationally analyzed using MD simulation to understand the interfacial water structure and the configuration of water molecules at the basal surface of sepiolite. It was found that due to the absence of hydrogen bonding sites, the hydrophobic sepiolite basal plane is not in close contact with water molecules, thus leaving a 3 angstrom void space at the basal plane. (c) 2012 Elsevier B.V. All rights reserved.; In this study, the anisotropic character of natural sepiolite was revealed by a combination of techniques involving contact angle measurements, Atomic Force Microscopy (AFM), and molecular dynamics (MD) simulations. Capillary rise technique was used to determine the change in contact angle values for several wetting liquids and calculate the surface free energy and acid/base components of sepiolite. The surface heterogeneity of sepiolite for a single fiber surface corresponding to roughness parameters was calculated from the AFM images. Finally, the interactions between water molecules and sepiolite mineral surfaces were also computationally analyzed using MD simulation to understand the interfacial water structure and the configuration of water molecules at the basal surface of sepiolite. It was found that due to the absence of hydrogen bonding sites, the hydrophobic sepiolite basal plane is not in close contact with water molecules, thus leaving a 3 angstrom void space at the basal plane. (c) 2012 Elsevier B.V. All rights reserved. |
| Keyword | Sepiolite Capillary Rise Contact Angle Surface Energy Components Molecular Dynamics Simulation |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences |
| DOI | 10.1016/j.colsurfa.2012.04.018 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | ATOMIC-FORCE MICROSCOPY ; THIN-LAYER WICKING ; CRYSTAL-STRUCTURES ; WATER-STRUCTURE ; CLAY-MINERALS ; THERMODYNAMIC PROPERTIES ; AQUEOUS-SOLUTIONS ; LIQUID WATER ; TALC ; SYSTEMS |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Physical |
| WOS ID | WOS:000313407200004 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/11340 |
| Collection | 研究所（批量导入） |
| Affiliation | 1.Istanbul Tech Univ, Dept Mineral Proc Engn, TR-34469 Istanbul, Turkey 2.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Benli, Birgul,Du, Hao,Celik, Mehmet Sabri. The anisotropic characteristics of natural fibrous sepiolite as revealed by contact angle, surface free energy, AFM and molecular dynamics simulation[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2012,408(August):22-31. |
| APA | Benli, Birgul,Du, Hao,&Celik, Mehmet Sabri.(2012).The anisotropic characteristics of natural fibrous sepiolite as revealed by contact angle, surface free energy, AFM and molecular dynamics simulation.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,408(August),22-31. |
| MLA | Benli, Birgul,et al."The anisotropic characteristics of natural fibrous sepiolite as revealed by contact angle, surface free energy, AFM and molecular dynamics simulation".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 408.August(2012):22-31. |
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| The anisotropic char（2048KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
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