4 sakka s kozuka h rheology of sols and fiber drawing j non cryst sol 1988 100 142 153 5 shin d y han s m spinnability and theological properties of sols derived from si oc 2 h 5 4 and zr o nc 3 h 7 4 solutions j sol gel sci tech 1994 1 267 273 6 sowman h g a new era in ceramic fibers via sol gel technology cer bull 1988 67 191 1 1916 7 sacks m d sheu r s rheological properties of silica sol gel materials j non cryst sol 1987 92 383 396 8 hasegawa i nakamura t motojima s kajiwara m synthesis of silicon carbide fibers by sol gel processing j non cryst sol 1997 8 577 579 9 brinker c j scherer g w sol gel science the physics and chemistry of sol gel processing academic press inc san diego calif usa 1990 p 204 209 10 kamiya k tanimoto k toshinobu y preparation of tio2 fibers by hydrolysis and polycondensation of ti o i c 3 h 7 4 j mat sci lett 1986 5 402 404 11 glaubitt w watzka w scholz h sporn d sol gel processing of functional and structural ceramic oxide fibers j sol gel sci tech 1997 8 29 33 12 muralidharan b g agrawal d c sol.