Effect of Processing Variables on the Solution Characteristics of γ-Glycidoxypropyltrimethoxysilane (γ-GPS)

Surface chemical and thermodynamic properties of γ‐glycidoxy-propyltrimethoxysilane-treated alumina: an XPS and IGC study

“…Bertelsen and Boerio have shown that drying a GPS ®lm on aluminium at temperatures higher than 180 ³C degrades the molecules by opening of the epoxy ring and leads to formation of carbonyl functionalities. 53,54 If degradation occurs, this shows that only a window between 65 ³C and 93 ³C is favourable for the interaction of GPS with the alumina surface. Although the same correlation could not be established for the non-treated powders, the same drop is observed after 80 ³C.…”

In situ and ex situ FTIR–ATR and Raman microscopic studies of organosilane hydrolysis and the effect of hydrolysis on silane diffusion through a polymeric film

“…The catalytic effect of the amine group in this context was also described elsewhere 6, 7. Raman spectroscopy was also previously used by Bertelsen and Boerio8 to study the rate of γ‐glycidoxypropyltrimethoxy‐silane (GPS), which was strongly dependent on the water concentration in solution. After 2 h in aqueous solution, the species present (confirmed using 29 Si–NMR7, 9, 10) was the condensate.…”

Grit-Blast/Silane (GBS) Aluminum Surface Preparation for Structural Adhesive Bonding

“…This includes: 1) assessing performance by means other than the wedge test; 2) studying interactions between various process parameters in a systematic way; 3) characterizing the morphology and chemistry of silane-treated surfaces; 4) determining the mechanism(s) which enables the surface preparation to produce good adhesion and durability performance; and 5) evaluating silanes other than the epoxy-functional γ-GPS as well as hydrolysis in media other than pure water. Various organizations have already contributed significantly in one or more of these areas 27,28,29 . With their work, a more robust silane surface preparation process is possible.…”