Analytical Methods for Silane Composition Verification

Technique Measured Parameters

FTIR Spectroscopy Si─O─Si (1100 cm⁻¹), Y-group signals

²⁹Si NMR Hydrolysis degree (Q³/Q⁴ ratios)

XPS Analysis Surface Si concentration (102–104 eV)

TGA-DSC Decomposition steps (200–600°C range)

Recent Study:

AFM-IR nanoimaging revealed heterogeneous Y-group distribution in mercaptosilane films, explaining 15% adhesion variance in tire cord/rubber interfaces.