Synthesis, characterization and magnetorheological study of 3-aminopropyltriethoxysilane-modified Fe3O4 nanoparticles

被引：54

作者：

Wang, Guangshuo ^{[1
]}

Ma, Yingying ^{[1
]}

Tong, Yu ^{[2
]}

Dong, Xufeng ^{[2
]}

机构：

[1] Hebei Univ Engn, Coll Equipment Mfg, Handan 056038, Peoples R China

[2] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China

来源：

SMART MATERIALS AND STRUCTURES | 2016年 / 25卷 / 03期

关键词：

Fe3O4; nanoparticles; 3-aminopropyltriethoxysilane; sonochemical; magnetorheological properties; IRON-OXIDE NANOPARTICLES; SUSPENSIONS; BEHAVIOR;

D O I：

10.1088/0964-1726/25/3/035028

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In this study, monodisperse Fe3O4 nanoparticles were synthesized successfully using a sonochemical method in the presence of 3-aminopropyltriethoxysilane (APTES). The morphology, microstructure and magnetic properties of the bare Fe3O4 and APTES-coated Fe3O4 were investigated in detail by TEM, XRD, FTIR and SQUID. It was found that APTES-coated Fe3O4 showed relatively good. dispersion with a. narrow size distribution of 8.4 +/- 2.1 nm. diameter. The functionalization of Fe3O4 was proved to be covalent linking between Fe3O4 and APTES. The field-dependent magnetization curve indicated superparamagnetic behavior of Fe3O4-APTES with a saturation magnetization (Ms) of 70.5 emu g(-1) at room temperature. A. magnetorheological (MR) fluid was prepared using the obtained Fe3O4-APTES nanoparticles with 25 wt% particles, and its MR properties were. tested using. a Physica MCR301 rheometer fitted with an MRmodule. The results showed that the as-prepared APTES-coated Fe3O4 nanoparticle-based MR fluid exhibited typical MR effects, with increasing viscosity, shear stress and yield stress depending on the applied magnetic field strength.

引用

页数：7

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