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Glass Spheres: Functionalization, Surface Modification and Mechanical Properties

Part of the Advanced Structured Materials book series (STRUCTMAT,volume 30)

Abstract

Hydrophobic micro-glass particles were obtained by chemical modification with organosilanes. Particles were treated by peroxymonosulfuric acid to obtain a hydrophilic surface, which was the first step of the modification process. Different silanes were used, each of them with a different functional group, effecting variable degrees of hydrophobicity. The successful chemical modification process was established using Fourier transform infrared spectroscopy (FTIR) and water drop interaction with the modified particles surfaces. The morphology of the modified particles was studied using scanning electron microscope (SEM). The degree of the hydrophobicity was established with static contact angle measurements. The microscopic adhesion and particle contact properties of the comparatively stiff (amorphous) micro-glass beads and the macroscopic powder flow behavior were investigated with ring shear tests and evaluated by constitutive models on physical basis.

Keywords

  • Contact Angle
  • Adhesion Force
  • Glass Particle
  • Major Principal Stress
  • Silanization Process

These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Correspondence to Zinaida Kutelova .

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Kutelova, Z., Mainka, H., Mader, K., Hintz, W., Tomas, J. (2013). Glass Spheres: Functionalization, Surface Modification and Mechanical Properties. In: Altenbach, H., Morozov, N. (eds) Surface Effects in Solid Mechanics. Advanced Structured Materials, vol 30. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35783-1_8

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