title: Infrared and Raman spectroscopic studies of tris-[3-(trimethoxysilyl)propyl] isocyanurate, its sol-gel process, and coating on aluminum and copper.
abstract: Tris-[3-(trimethoxysilyl)propyl] isocyanurate (TTPI) has been used as a precursor to prepare a sol using ethanol as the solvent under acidic conditions. The sol-gel was applied for the surface treatment of aluminum and copper. Infrared and Raman spectra have been recorded for pure TTPI and the TTPI sol, xerogel and TTPI sol-gel coated metals. From the vibrational spectra, TTPI is likely to have the C1 point group. Vibrational assignments are suggested based on group frequencies, the expected reactions in the sol-gel process and the vibrational studies of some related molecules. From the experimental infrared spectra of xerogels annealed at different temperatures and from the thermal-gravimetric analysis, it is found that the TTPI xerogel decomposes at around 450°C with silica being the major decomposition product. A cyclic voltammetric study of the metal electrodes coated with different concentrations of TTPI ranging from 5% to 42% (v/v) has shown that the films with high concentrations of sol would provide better corrosion protection for aluminum and copper.
authors.affiliation: Department of Chemistry, University of Memphis, Memphis, TN 38152, USA. Electronic address: yingli@memphis.edu.
authors.forename: Ying-Sing
authors.initials: YS
authors.lastname: Li
authors.affiliation: CSIRO Materials Science and Engineering, PO Box 21, Belmont, VIC 3216, Australia.
authors.forename: Jeffrey S
authors.initials: JS
authors.lastname: Church
authors.affiliation: CSIRO Materials Science and Engineering, PO Box 21, Belmont, VIC 3216, Australia.
authors.forename: Andrea L
authors.initials: AL
authors.lastname: Woodhead
authors.affiliation: Department of Chemistry, University of Memphis, Memphis, TN 38152, USA.
authors.forename: Nicolas E
authors.initials: NE
authors.lastname: Vecchio
authors.affiliation: Department of Chemistry, University of Memphis, Memphis, TN 38152, USA.
authors.forename: Johnny
authors.initials: J
authors.lastname: Yang
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D055664:Electrochemical Techniques; D004566:Electrodes; D044367:Phase Transition; D013055:Spectrophotometry, Infrared; D013059:Spectrum Analysis, Raman; D013818:Thermogravimetry; D014227:Triazines / Q000737:chemistry*; D014297:Trimethylsilyl Compounds / Q000737:chemistry*
chemical_list: D014227:Triazines; D014297:Trimethylsilyl Compounds; C000595750:tris-(3-(trimethoxysilyl)propyl)isocyanurate; D003300:Copper; D000535:Aluminum
keywords: Corrosion protection; Sol–gels; Thermal decomposition; Tris-[3-(trimethoxysilyl)propyl] isocyanurate; Vibrational spectra; Xerogels