| abstract |
(57) [Summary] [Problem] It has a three-dimensional continuous network skeleton, and the pore diameter is 30μ. The present invention provides a microporous body having an extremely small porosity of not more than m and a high porosity of 60 to 90% and a method for producing the same. SOLUTION: A thermoplastic resin such as ethylene-vinyl acetate copolymer, ethylene-methyl methacrylate copolymer, syndiotactic 1,2-polybutadiene and a water-soluble organic compound such as urea and a water-soluble polymer such as polyethylene glycol are used. Molecular material at a temperature of 60-150 ° C. Stir and mix at low speed with a conventional rotor mixer for ~ 40 minutes. Then, it is brought into contact with warm water of about 50 to 90 ° C. to extract the water-soluble organic compound and the water-soluble polymer material, thereby obtaining a microporous body having a three-dimensional continuous network skeleton. Particularly, when the melting point of the water-soluble organic compound is higher than the melting point or softening point of the thermoplastic resin and the melting point of the water-soluble polymer material, and the mixing temperature is between these melting points, etc. The body can be obtained easily. |