Vibrational Analysis of 3‐Glycidoxypropyltrimethoxysilane Polymer

Abstract

Summary In this work 3‐glycidoxypropyltrimethoxysilane polymer with inorganic SiOSi bonds was prepared by a sol‐gel process. The structure of polymer was characterized by vibrational spectroscopy (Raman and IR). The interpretation of vibrational spectra is supported by the normal coordinate analysis based on density functional theory (DFT) calculations. A conformational and vibrational analysis of lowest energy dimer structure has been carried out by DFT calculations using Becke's three‐parameter exchange functional in combination with the Lee‐Young‐Parr correlation functional (B3‐LYP) and standard 6–311 + G(d,p) basis set. The comparison of theoretical spectra with the experimental data enabled us to extract the characteristic vibrational bands of polymer structure. The inorganic polymerization gives rise to siloxane network with SiOSi stretchings at 1030 and 1134 cm−1 suggesting the ladder‐type structure of GPTMS polymer.

Gamma-Irradiation Induced Functionalization of Graphene Oxide with Organosilanes

“…Strong characteristic peaks of GPTES was observed at 1196 and 1100 cm −1 which corresponded to CH 2 wagging vibrations of propyl chain and glycidoxy group, respectively [20]. For GGO, the band at 3420 cm −1 becomes weak and band at 2870 cm −1 appears corresponding to the stretching of -CH 2 groups from alkyl chain assigned to silane mioties of silane as shown in Figure 3.…”

Hexagonal Boron Nitride Impregnated Silane Composite Coating for Corrosion Resistance of Magnesium Alloys for Temporary Bioimplant Applications

“…The 1256 cm −1 band is due to the symmetric ring stretch of the epoxy group in GPTMS silane [41]. The peaks at ∼3000 cm −1 and 3070 cm −1 are due to CH 2 and CH stretching modes connected to epoxy groups [41].…”

Ceramic / inorganic-organic nano-hybrid composites for thermally stable insulation of electrical wires. Part II: Properties of the composite insulated wires

“…The band at 1000 cm -1 , also belonging to Si-O and Si-CH3 stretching, becomes broad with increasing ageing temperature. The absorption bands at 1080 and 1198 cm -1 , assigning to glycidoxy and propylene groups from GP [13], disappeared after 450°C ageing because of its lower thermal stability compared with methyl group. In summary, the change of these characteristic absorption bands reflects the structure evolution of the composite coating during high temperature ageing.…”