Superparamagnetic nano magnetic beads and its preparation method and application of controllable emulsification/demulsification performance
A nano-magnetic bead and superparamagnetic technology, applied in the direction of immiscible liquid separation, etc., can solve difficult problems such as demulsification
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0059] In the preparation method of superparamagnetic nanomagnetic beads provided by the present embodiment, figure 1 A chemical reaction process for surface modification of ultrafum magnetic nanowexide three iron is carried out for the alkyltrimethoxysilane. according to figure 1 It can be seen that since the three methoxysilanes of the alkyltrimethoxysilane may be similar to the hydroxyl group on the three iron of the superpassing nano-eater, therefore, the alkyltrimethoxysilane can be adjoozed to four oxide. The three iron is surface modified.
[0060] The present specification provides a Pickering emulsion comprising the superparamagnetic nanomagnetic beads, wherein the superposed nanomagnetic bead is an emulsion stabilizer of a Pickering emulsion. Since the superparamagnetic nanomagnetic bead prepared by this specification not only has good emulsion stability, but also the magnetic response is sensitive. Therefore, the Pickering emulsion prepared by the superparamagnetic nano...
experiment example 1
[0071] In this experimental example, a synthesized nano superparamagnetic iron tetroxide, includes the following steps:
[0072] Are disposed 0.5M FeSO 4 Aqueous solution (containing 0.2 M HCl), 1M FeCl 3 The aqueous solution (containing 0.2 M HCl), prepared 1.5 M NaOH. Add 100ml NaOH to the flask and heat it up to 80 ° C, add 10ml FESO drop 4 10mlfecl 3 Mixed solution, and protect the nitrogen gas. When the above mixture turned black, with stirring under cooling, collecting the particles with a magnet and washed with water at least ten times, freeze-dried overnight in vacuo to give the nano-superparamagnetic triiron tetroxide.
[0073] figure 2 Infrared spectrum of the above-described nano-superparamagnetic iron tetroxide. Figure 433,587,897cm -1 At the peak of Fe 3 O 4 Characteristic absorption peak, 1630,3430cm -1 Absorption peak corresponding to the Fe 3 O 4 Surface stretching vibration of hydroxyl groups, these peaks confirmed Fe 3 O 4 The successful synthesis.
[0074] like...
experiment example 2
[0076] In this experimental example, a synthesized nano superparamagnetic beads (butyl trimethoxy silane coupling magnetic bead), includes the following steps:
[0077] Nano-superparamagnetic iron tetroxide is first prepared in Experimental Example 1 dispersed in 50ml of ethanol, full power ultrasonic 5min. The above-described nano-superparamagnetic triiron tetroxide dispersion was poured into the flask, and 100ml of toluene was added, was added 0.01mol / g of butyl trimethoxy silane. An oil bath at 110 ℃, the reaction 8h under nitrogen. The resulting reaction black material collected with a magnet, and washed five times with water 10 times with ethanol and then freeze-dried overnight in vacuo. Superparamagnetic beads nano structure being produced as a schematic Figure 4 Indicated (shown) Figure 4 , Only the external triiron tetroxide shows a butyltrimethoxysilane, in practice by several butyltrimethoxysilane wrapped outside of Fe3O4).
[0078] like Figure 5 Infrared spectrum of t...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More