@article {4440,
	title = {Light scattering study on sol-gel transformation of SiO2 colloid at extremely high concentrations},
	journal = {Clays and Clay Minerals},
	volume = {46},
	number = {2},
	year = {1998},
	note = {ISI Document Delivery No.: ZU862Times Cited: 5Cited Reference Count: 29},
	month = {Apr},
	pages = {161-166},
	type = {Article},
	abstract = {Ludox SiO(2 )sols with a reasonably uniform size of 12 nm and in the high concentration of 10 to 40 wt\% were transformed to gels by lowering the pH. The process from sol to gel, followed by light scattering, did not show a sign of fractal growth within the length scale of observation (>40 nm). Rather, a density fluctuation due to a dynamic (non-equilibrium) disorder was apparent. Together with the results of viscosity measurements, it was concluded that the process consists of 3 stages: 1) A dynamic (non-equilibrium) density fluctuation grows rapidly. 2) Such density fluctuation acquires some order. 3) The entire bulk loses fluidity and becomes a macroscopic gel.},
	keywords = {AGGREGATION, DENSITY FLUCTUATION, GLASS, GROWTH, light scattering study, PARTICLES, SILICA, SiO2 colloids, sol-gel transformation, TRANSITION, X-RAY-SCATTERING},
	isbn = {0009-8604},
	url = {<Go to ISI>://000074243100006},
	author = {Xu, Y. N. and Koga,Yoshikata}
}
