Titanium dioxide solution in oil

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Discussion Overview

The discussion revolves around the preparation of a Titanium dioxide (TiO2) suspension in oil, specifically focusing on the formulation and stability of the mixture. Participants explore the challenges faced in achieving a stable colloidal solution and the implications of using specific components.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • One participant seeks assistance in preparing a TiO2 suspension in oil, detailing the composition and expressing concerns about clumping and settling after homogenization.
  • Another participant clarifies that the mixture is technically a suspension or colloid, emphasizing that stability may depend on factors such as particle size and the specific brands of components used.
  • A later reply acknowledges the colloidal nature of the solution and discusses the formulation of a microencapsulated suspension of TiO2 and Fe3O4 nanoparticles, while seeking advice on suitable dispersants and anti-settling agents.
  • One participant suggests considering a thicker fluid than Isopar M and inquires about the effects of adding Fe3O4 to the mixture and its encapsulation properties.

Areas of Agreement / Disagreement

Participants express differing views on the nature of the mixture and its stability, with no consensus reached on the best approach to achieve a stable suspension.

Contextual Notes

Limitations include potential variability in the stability of the suspension based on the specific brands and properties of the components used, as well as the need for suitable dispersants and anti-settling agents that have not been definitively identified.

SaketIndra
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Hello everyone,

I am seeking assistance in preparing a Titanium dioxide solution in oil. Below are the chemical compositions of the solution:

  1. Titanium Dioxide (TiO2): 20% by weight, with the product name Tronox CR828.
  2. Solvent/Oil: Isoparaffin, constituting 75% by weight, with the product name ISOPAR M.
  3. Surfactant: Sorbitan trioleate, comprising 5% by weight.
However, I am encountering an issue where the solution clumps together and settles down in the beaker after homogenization. I'm unsure of what I might be doing wrong.
 
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Technically it is not a solution, but a suspension (or a colloid). Whether it is stable or not depends (between other factors) on the suspended particles size.

Are you 100% sure the recipe guarantees a stable mixture and calls for exactly these brands of components? Such things tend to be highly erratic.
 
Borek said:
Technically it is not a solution, but a suspension (or a colloid). Whether it is stable or not depends (between other factors) on the suspended particles size.

Are you 100% sure the recipe guarantees a stable mixture and calls for exactly these brands of components? Such things tend to be highly erratic.
Hello, you're absolutely correct. This refers to a colloidal solution where TiO2 is intended to be suspended. After conducting some research, I have focused on formulating a microencapsulated suspension of TiO2 and Fe3O4 nanoparticles for use in magnetophoretic displays.
1688104579868.png

While I understand the necessity of using a suitable dispersant and anti-settling agent, I'm facing difficulties in identifying the most appropriate options. If you happen to know any interested individuals or experts, I would be grateful if you could provide their information. I am willing to create a freelancing job request on their preferred platform, and they can assist me in this matter. Please inform me if you have any leads.
 
Isopar M is a fairly low viscosity fluid. Have you tried using something thicker?

Have you tried adding the Fe3O4 to the mixture that you have created and encapsulating it? It may have different properties in that physical configuration.

BoB
 

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