Technical Information Magazine 201909-01 Quantification of Silanol Groups on Silica Surfaces
The technical information magazine The TRC News provides the latest information on analytical techniques that are useful for research and development, solving production troubles, and quality control.
**Abstract** On the surface of silica, there are hydroxyl groups known as silanol groups (Si-OH), which play a significant role in its physical properties such as hydrophobicity and hydrophilicity. Additionally, by bonding silane coupling agents, the chemical properties of the surface can be improved, making it widely used as a resin filler. Therefore, these silanol groups on the silica surface are important factors that influence not only the properties of silica itself but also the overall performance of the material. This paper introduces a method for accurately and sensitively quantifying silanol groups in a stable manner. **Table of Contents** 1. Introduction 2. Principle 3. Quantification of reactive silanol groups in silica particles 4. Quantification of surface silanol groups on silicon wafers 5. Changes in the amount of silanol groups due to heating 6. Conclusion
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Technical Information Magazine The TRC News "Quantification of Silanol Groups on Silica Surfaces" [Abstract] Silica surfaces contain silicon (Si-OH) with hydroxyl groups known as silanol groups, which significantly contribute to physical properties such as hydrophobicity and hydrophilicity. Additionally, by bonding silane coupling agents, the chemical properties of the surface can be improved, making it widely used as a resin filler. Therefore, these silanol groups on the silica surface are crucial factors that influence not only the properties of silica itself but also the overall performance of the material. This paper introduces a method for accurately and sensitively quantifying silanol groups in a stable manner. [Table of Contents] 1. Introduction 2. Principle 3. Quantification of Reactive Silanol Groups on Silica Particles 4. Quantification of Surface Silanol Groups on Silicon Wafers 5. Changes in Silanol Group Quantity Due to Heating 6. Conclusion [Figures and Tables] Figures 1-4, Tables 1-6 Density of Reactive Silanol Groups Structure of Silica Silicon Solid 29Si NMR Spectrum Density of Reactive and Non-Reactive Silanol Groups XPS Spectrum of Silane-Treated Silicon Wafers Ratio of Silanol Groups on Silicon Wafers Density of Silanol Groups in Heated Silica Particles Ratio of Silanol Groups on Heated Silicon Wafers
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