Accession Number : ADA130904

Title :   Hydrothermal Stability of Gamma-Aminopropyltriethoxysilane Coupling Agent on Ground Silicon Powder and E-Glass Fibers.

Descriptive Note : Technical rept.,


Personal Author(s) : Culler,S R ; Ishida,H ; Koenig,J L

PDF Url : ADA130904

Report Date : 21 Jul 1983

Pagination or Media Count : 27

Abstract : Diffuse reflectance Fourier transform infrared spectroscopy (Drift) was used to study the hydrothermal stability of silane coupling agents on the surface of E-glass fibers and ground silicon powder. The coupling agent studied was gamma-aminopropyltriethoxysilane (gamma-APS). The concepts of chemisorbed and physisorbed silane coupling agent were explored using the Drift infrared technique. The ground silicon powder was used to model the E-glass fiber/coupling agent system. Using the silicon powder, the structure of the siloxane (Si-O-Si) region of the infrared spectrum (1150 to 1000/cm-1) could be investigated. Water was used to remove the physisorbed coupling agent from the substrate. The amount of chemisorbed silane was found to vary slightly as a function of the coupling agent concentration, heat treatment, pH of the coupling agent on the substrate, and the temperature of the water used to remove the physisorbed coupling agent. Spectroscopic evidence was found for chemical bonding of the chemisorbed silane coupling agents to the surface of the substrate used.

Descriptors :   *Silanes, *Coupling(Interaction), Exposure(General), Hot water, Thermal stability, Surfaces, Glass, Fibers, Silicon, Powders, Hydrolysis, Adsorption, Chemisorption, Fourier spectroscopy, Infrared spectroscopy, Diffuse reflection, Siloxanes, Substrates, Chemical bonds, Layers, PH factor

Subject Categories : Organic Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE