A comparative FTIR study of thermal and photo-polymerization processes in hybrid sol–gel films

Preparation of sol–gel hybrid materials from γ-methacryloxypropyltrimethoxysilane and tetramethyl orthosilicate: study of the hydrolysis and condensation reactions

“…The asymmetric and symmetric stretching vibrations of C-O of C-O-C bonds are attributed to bands at 1320 and 1300 cm -1 , respectively [49]. Finally, the bands at 941 and 822 cm -1 are assigned to the C=C vibrations of the C=C-C=O group, while that assigned to C-C-O skeleton vibration for pure ethanol appear at 1090 cm -1 [50].…”

“…The bands at 1450 and 1150 cm -1 are attributed to deformation vibrations of C-H in CH 2 and CH 3 bonds [49,50]. The asymmetric and symmetric stretching vibrations of C-O of C-O-C bonds are attributed to bands at 1320 and 1300 cm -1 , respectively [49].…”

Synthesis of a Novel Bifunctional Photoinitiator: Hybrid Coatings on Polycarbonate

“…[6] Most hybrid materials reported in the literature are thermally cured. [7][8][9] Alternatively, they can be prepared by using a radiation-curing technique such as using a UV curable binder system. [10,11] Radiation curing technologies provide a number of economic advantages over the conventional thermal operation techniques, among them: rapid through cure, low energy requirements, room temperature treatment, solvent-free formulation, low costs, etc.…”

Stereolithography of SiOC Ceramic Microcomponents

“…As photopolymerization proceeds, the C-O absorption at 1720 cm −1 , typical of esters such as TMSPM, becomes broader and shifts to higher wavenumbers, due to the change of mobility of C-O bonds with gradual terminal double bond polymerization. [ 51 ] Moreover, a progress in the densifi cation of the inorganic network deriving from the sol-gel component is indicated by the decreasing of the ratio between the …”