| Effect of squeeze, homogenization, and freezing treatments on particle diameter and rheological properties of palygorskite | |
| 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 ; Wang AQ(王爱勤)1; Wang AQ(王爱勤)
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| 2014 | |
| Source Publication | Advanced Powder Technology
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| ISSN | 0921-8831 |
| Volume | 25Issue:3Pages:968-977 |
| Abstract | The natural palygorskite exist as aggregates or bundles via weak electrostatic and van der Waals interactions. A new method for effective disaggregation of bundles was developed via freezing combined with squeeze and homogenization processes. In this work, the effects of squeeze, homogenization, and freezing treatments on particle size and rheological properties of palygorskite were investigated systematically by particle diameter distribution, steady shear, and linear oscillatory measurements. The influences of squeezing times, homogenization pressure, and freezing time on shear stress and shear modulus were studied in detail. The association capacity of rods in the obtained suspensions was discussed according to a power law of the form Y = kyCn. The correlation among the dispersion of palygorskite, the aspect ratio of the rods, and the rheological properties was discussed. The diameter distribution changed from 4.3 to 3.0 mu m of natural palygorskite to 1.8 mu m of sample squeezed for two times, frozen at -18 degrees C for 4 h, and homogenized at 10 MPa. The suspension with higher shear stress and shear modulus was obtained after squeezed for three times and homogenized at 30 MPa. |
| Keyword | Palygorskite Mechanical Treatment Rheological Properties Particle Size |
| Subject Area | 环境材料与生态化学 |
| DOI | 10.1016/j.apt.2014.01.019 |
| Funding Organization | “863” Project of the Ministry of Science and Technology, PR China (No. 2013AA032003);the Science and Technology Support Project of Jiangsu Provincial Sci. & Tech. Department (No. BE2012113) |
| Indexed By | SCI |
| If | 2.638 |
| 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/362003/6550 |
| 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, R&D Ctr Xuyi Palygorskite Appl Technol, Lanzhou 730000, Peoples R China 2.Qingdao Univ Sci & Technol, Key Lab Ecochem Engn, Minist Educ, Coll Chem & Mol Engn, Qingdao 266042, Peoples R China |
| Recommended Citation GB/T 7714 | Xu JX,Wang WB,Wang AQ,et al. Effect of squeeze, homogenization, and freezing treatments on particle diameter and rheological properties of palygorskite[J]. Advanced Powder Technology,2014,25(3):968-977. |
| APA | Xu JX,Wang WB,Wang AQ,&王爱勤.(2014).Effect of squeeze, homogenization, and freezing treatments on particle diameter and rheological properties of palygorskite.Advanced Powder Technology,25(3),968-977. |
| MLA | Xu JX,et al."Effect of squeeze, homogenization, and freezing treatments on particle diameter and rheological properties of palygorskite".Advanced Powder Technology 25.3(2014):968-977. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Effect of squeeze, h（2537KB） | 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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