Is there any way to check if the silane treatment has been applied?
A simple way to evaluate hydrophobically treated fillers is to use the index of hydrophobicity (methanol wettability).
Confirming the results of hydrophobization treatment
- Place 0.5g of the sample in a 500mL triangular flask.
- Add 50mL of ion exchange water to ① and stir with stirrer.
- With stirring, add a drop of methanol from a burette, and read the drop volume when the entire amount of the sample is suspended in the ion-exchange water.
- Determine the degree of hydrophobicity by the following equation.
For detailed analysis, 29Si solid-state NMR is also useful.
Related FAQ
- What is the difference in use of methoxysilyl and ethoxysilyl groups in silane coupling agents?
- How to increase the solubility of silane coupling agent in water and improve the storage stability of the solution?
- How to store silane coupling agents pretreated on inorganic materials or resins with silane added?
- How to store the solution after hydrolyzing the silane coupling agent?
- What precautions should be taken when storing silane coupling agents?
