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lzÖ±½Ó¿´sol gel scienceÕâ±¾Êé¶àÏêϸ,±¾ÈËÓÐÌû×Ó·¢¹ý.ÎÒÓÐ×îÏêϸµÄ¶¨Òå:
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A colloid is a suspension in which the dispersed phase is so small
(- 1-1000 nm) that gravitational forces are negligible and interactions are
dominated by short-range forces, such as van der Waals attraction and
surface charges. The inertia of the dispersed phase is small enough that it
exhibits Brownian motion (or Brownian diffusion), a random walk driven
by momentum imparted by collisions with molecules of the suspending
medium. A sol is a colloidal suspension of solid particles in a liquid.

gel:
consist ofcontinuous solid and fluid phases of colloidal dimensions,contains a continuous solid skeleton enclosing a continuous liquid phase.
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