Solvent effect on distribution of phenyl groups for C6H5SiO3/2–SiO2 coatings prepared on polycarbonate substrate
Source abstract
Abstract
Phenyltriethoxysilane (PhTES) and tetraethoxysilane (TEOS) coatings [xPhTES·(100 − x)TEOS (mol%)] (x = 0–80) were prepared using methanol (Film A) or 1-propanol (Film B) as a solvent on polycarbonate (PC) substrate, and the effect of alcohol solvents on both the adhesion and distribution of phenyl groups were studied. The alcohol evaporation rates for Films A and B were monitored by using quartz crystal microbalance (QCM). QCM measurements revealed that the migration of phenyl group to the PC substrate side was strongly related with the alcohol solvent. Transmission fourier transform infrared measurements for these films suggest that a phase-separation between SiO2 and PhSiO3/2 networks occur during the alcohol evaporation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Analytical Chemistry and Sensors · Gas Sensing Nanomaterials and Sensors · Silicone and Siloxane Chemistry
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