| A novel approach for dispersion palygorskite aggregates into nanorods via adding freezing process into extrusion and homogenization treatment | |
| Department | 环境材料与生态化学研究发展中心 |
Xu JX(徐继香)1,2; Wang WB(王文波)1,3 ; Wang AQ(王爱勤)1,3; Wang AQ(王爱勤)
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| 2013 | |
| Source Publication | Powder Technology
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| ISSN | 0032-5910 |
| Volume | 249Pages:157-162 |
| Abstract | Palygorskite is a natural nanorod with about 20-70 nm in diameter and 1-2 μm in length, but the intrinsic existence. form of palygorskite as aggregates or bundles effaces its nanometer characteristic. In this work, a novel method for effective disaggregation of crystal bundles of palygorskite was developed via freezing assisted extrusion and homogenization process. The effects of freezing process and freezing time on the disaggregation state, micro-structure and properties of treated palygorskite were studied using scanning electron microscopy (SEM), transmission electron microscopy (TEM), infrared spectroscopy (IR), X-ray diffraction (XRD), N2 adsorption-desorption isotherm (BET), and rotary viscosity measurements. The dispersion of palygorskite depended greatly on freezing time, and a highly dispersed palygorskite nanorods were achieved after freezing for 4 h followed by homogenization at 10 MPa. The treated palygorskite retained its original structure, and the rods were rarely disrupted. The specific surface area of palygorskite enhanced from 163 m2/g to 237 m2/g as the freezing time increased from 0 to 8 h, and the rotary viscosity increased from 152 mPa.s of natural palygorskite to 2682 mPa.s, which was about 2.0 folds of the sample without freezing treatment. |
| Keyword | Palygorskite Disaggregation Freezing Process Morphology Rotary Viscosity |
| Subject Area | 环境材料与生态化学 |
| DOI | 10.1016/j.powtec.2013.08.002 |
| Funding Organization | the "863" Project of the Ministry of Science and Technology, P. R. China (2013AA031403);Project of Jiangsu Provincial Sci. & Tech. Department (No. BE2012113) |
| Indexed By | SCI |
| If | 2.269 |
| Language | 英语 |
| Funding Project | 功能复合材料组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/4552 |
| Collection | 环境材料与生态化学研究发展中心 |
| Corresponding Author | Wang AQ(王爱勤) |
| Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Xuyi Palygorskite Appl Technol, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Huaiyin Inst Technol, Key Lab Palygorskite Sci & Appl Technol Jiangsu P, Huaian 223003, Peoples R China |
| Recommended Citation GB/T 7714 | Xu JX,Wang WB,Wang AQ,et al. A novel approach for dispersion palygorskite aggregates into nanorods via adding freezing process into extrusion and homogenization treatment[J]. Powder Technology,2013,249:157-162. |
| APA | Xu JX,Wang WB,Wang AQ,&王爱勤.(2013).A novel approach for dispersion palygorskite aggregates into nanorods via adding freezing process into extrusion and homogenization treatment.Powder Technology,249,157-162. |
| MLA | Xu JX,et al."A novel approach for dispersion palygorskite aggregates into nanorods via adding freezing process into extrusion and homogenization treatment".Powder Technology 249(2013):157-162. |
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| A novel approach for（1862KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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