Nanoscale dispersion crystal bundles of palygorskite by associated modification with phytic acid and high-pressure homogenization for enhanced colloidal properties | |
Department | 环境材料与生态化学研究发展中心 |
Wang WB(王文波)1,2; Wang FF(王方方)1; Kang YR(康玉茹)1; Wang AQ(王爱勤)1,2; Wang AQ(王爱勤) | |
2015 | |
Source Publication | Powder Technology |
ISSN | 0032-5910 |
Volume | 269Pages:85-92 |
Abstract | The nanoscale dispersion of rod-like crystal bundles or aggregates of natural palygorskite (PAL) is not only significant in practical application but is also a challenge. In this paper, phytic acid (PA) was introduced during high-pressure homogenization (HPH) process to simultaneously disperse PAL crystal bundles and restrain the re-aggregation of the dispersed nanorods. SEM, TEM, XRD, FTIR and N2 adsorption–desorption analyses confirmed that the crystal bundles or aggregates of PAL were highly disaggregated and dispersed to individual nanorod with no disruption to the aspect ratio of rods after being homogenized at 30 MPa, and PA molecules are favorable to dispersion and restrain the re-aggregation of nanorods. The nanoscale dispersion of PAL rods increased the BET specific surface area and Zeta potentials, and effectively improved the colloidal properties. The colloidal viscosity of modified PAL was sharply increased by 110.4% (from 1728 mPa·s to 3636 mPa·s) at the optimal dosage of PA (0.1 wt.%) and the homogenization pressure of 30 MPa, and the suspension stability was clearly enhanced by 71%. This simple disaggregation process provides a new industrial approach to produce nanoscale PAL and extend its application in modern industry. |
Keyword | Palygorskite Nanoscale Dispersion Phytic Acid High-pressure Homogenization Colloidal Properties |
Subject Area | 环境材料与生态化学 |
DOI | 10.1016/j.powtec.2014.09.015 |
Funding Organization | “863” Project of the Ministry of Science and Technology of the People's Republic of China (No. 2013AA032003);Natural Science Foundation of Gansu Provincial (No. 1208RJYA087);the open funds of Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province (No. HPK201201) |
Indexed By | SCI |
If | 2.759 |
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/362003/7211 |
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.Center of Xuyi Palygorskite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2.Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huai'an 223003, China |
Recommended Citation GB/T 7714 | Wang WB,Wang FF,Kang YR,et al. Nanoscale dispersion crystal bundles of palygorskite by associated modification with phytic acid and high-pressure homogenization for enhanced colloidal properties[J]. Powder Technology,2015,269:85-92. |
APA | Wang WB,Wang FF,Kang YR,Wang AQ,&王爱勤.(2015).Nanoscale dispersion crystal bundles of palygorskite by associated modification with phytic acid and high-pressure homogenization for enhanced colloidal properties.Powder Technology,269,85-92. |
MLA | Wang WB,et al."Nanoscale dispersion crystal bundles of palygorskite by associated modification with phytic acid and high-pressure homogenization for enhanced colloidal properties".Powder Technology 269(2015):85-92. |
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