The role of N,N-dimethylaniline in the formation of titania gel monolith by sol-gel method
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Our investigation on the rheological aspects such as gelling time, specific density, fluidity, viscosity and surface tension of the sol derived from titanium-tetra-isopropoxide (TTIP), water and isopropanol (i-PrOH) has been reviewed in the presence of n,n-dimethylaniline (DMA) as a drying control chemical agent (DCCA). Dry gels derived from DMA stabilized sol were found to be crack free with a larger surface area. The titania gel monolith obtained in the presence of DMA could be processed into rutile at much lower temperatures.
KeywordsPolymer Viscosity Titania Surface Tension Isopropanol
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- 4.C. J. BRINKER and G. W. SCHERER,“Sol-gel science” (Acdemic Press, Inc., New York, 1990).Google Scholar
- 9.J. RAY, M. CHATTERJEE and D. GANGULI, ibid. 11 (1992) 968.Google Scholar
- 14.J. ZARZYCHI, M. TRASSAS and J. PHALIPPOU, ibid. 17 (1982) 3371.Google Scholar
- 15.L. L. HENCH and D. R. ULRICH (eds),“Ultrastructure processing of ceramics, glasses and composites” (Wiley-Interscience, New York, 1984).Google Scholar
- 16.Idem and D. R. ULRICH (eds) “Science of ceramic chemical processing” (Wiley-Interscience, New York, 1984).Google Scholar
- 17.P. K. SHARMA and A. RAMANAN, J. Amer. Cer. Soc. submitted.Google Scholar