Hydrolytic Degradation Of Polysiloxanic Coatings On Glass Fibres (In Spanish)

Aqueous solutions of three silanes: 3-amiopropyltriethoxysilane (APES), 3-aminopropylmethyldiethoxysilane (APDES), were used to cover glass fibres. The pyrenesulfonyl chloride fluorescent moiety (PSC) was chemically attached to the silanized substrate via the sulfonamide formation when the sulfonyl group of the PSC reacts with the amino residues of the coatings. It was studied the silane layer hydrolytic degradation phenomenon (pH=7) was studied as a function of: i) temperature, and ii) coating layer type.