Synthesis and characterization of silica xerogels obtained via fast sol–gel process
✍ Scribed by Guillermo Andrade-Espinosa; Vladimir Escobar-Barrios; Rene Rangel-Mendez
- Publisher
- Springer
- Year
- 2010
- Weight
- 297 KB
- Volume
- 288
- Category
- Article
- ISSN
- 0340-255X
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Polyimide-silica (PI-SiO 2 ) hybrids with a nanostructure was obtained using the nonaqueous sol-gel process by polycondensation of phenyltriethoxysilane in a polyamic acid solution. Self-catalyzed hydrolysis of phenyl-substituted akoxysilane and modification on the polyimide structure are applied an
Silica gels that controlled the pore size were prepared by calcination of silica/organic polymer (50/50 wt %) composites prepared by the sol-gel process. Poly-(ethylene oxide) (PEO) -poly(propyrene oxide) (PPO) -PEO triblock copolymers, which are called poloxamers, were used as an organic polymer. T