| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide polyvinyl alcohol granular gel that can secure larger particle size and larger surface area than those of the conventional granular gel and a method for producing the same. <P>SOLUTION: This polyvinyl alcohol granular gel or a support for immobilization of microorganisms has a structure that the porous core substance is integrally coated on its outside surface with polyvinyl alcohol (PVA) gel layer. The polyvinyl alcohol granular gel is produced through the following steps: the step (a) where a porous core body 2 is soaked with an aqueous calcium chloride solution; the step (b) where the porous core body 2 is dipped into a macromolecular aqueous solution including a PVA polymer and an alginic acid salt to form a gel layer on the outside of the porous core body; the step (e) where the core body having the gel layer on the outside of the core body 2 is dipped in a solution including a crosslinking agent to crosslink the PVA polymer; and the step (f) where finally the crosslinked product is immersed in an aqueous sodium hydroxide to dissolve and remove calcium alginate gel. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
