Glycidoxypropyltrimethoxysilane modified colloidal silica coatings
- Univ. of Minnesota, Minneapolis, MN (United States)
Coatings were prepared from a suspension of colloidal silica particles containing glycidoxypropyltrimethoxysilane (GPS) and a polyamine curing agent. GPS was first added to an aqueous silica suspension which contained ethanol (30 wt%) to enhance mixing. The addition of GPS to a basic silica suspension favored condensation among the silane monomers and oligomers, resulting in precipitation. By contrast, acidic conditions resulted in slower condensation which allowed adsorption on the silane on silica, as followed by ATR-FTIR. After GPS addition and aging, the pH of the suspension was increased, a polyamine was added, and coatings were prepared on polyester web. Coatings with GPS modification were denser, adhered better to the polymer substrate, and could be made thicker than unmodified silica coatings.
- Sponsoring Organization:
- National Science Foundation, Washington, DC (United States)
- OSTI ID:
- 427699
- Report Number(s):
- CONF-960401-; ISBN 1-55899-338-X; TRN: IM9708%%25
- Resource Relation:
- Conference: Spring meeting of the Materials Research Society (MRS), San Francisco, CA (United States), 8-12 Apr 1996; Other Information: PBD: 1996; Related Information: Is Part Of Better ceramics through chemistry 7: Organic/inorganic hybrid materials; Coltrain, B.K. [ed.] [Eastman Kodak Co., Rochester, NY (United States)]; Sanchez, C. [ed.] [Univ. Pierre et Marie Curie, Paris (France)]; Schaefer, D.W. [ed.] [Sandia National Labs., Albuquerque, NM (United States)]; Wilkes, G.L. [ed.] [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States)]; PB: 695 p.; Materials Research Society symposium proceedings, Volume 435
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COMPOSITE MATERIALS
SURFACE COATING
MICROSTRUCTURE
SILICA
POLYMERS
EPOXIDES
SILANES
HYDROLYSIS
DEHYDROCYCLIZATION
PARTICULATES
PH VALUE
SUBSTRATES
PHTHALATES
POLYETHYLENES
OPTICAL MICROSCOPY
SCANNING ELECTRON MICROSCOPY
FOURIER TRANSFORM SPECTROMETERS
INFRARED SPECTRA
CONCENTRATION RATIO
EXPERIMENTAL DATA