| 摘要 |
<p>A method of preparing a relatively homogeneous, isotropic, three-dimensional cellular microporous polymer structure comprising heating a mixture of a polymer selected from the group consisting of olefinic polymers, condensation polymers, oxidation polymers, and blends thereof, and a compatible liquid to a temperature and for a time sufficient to form a homogeneous solution. At the same time a plurality of liquid droplets of substantially the same size are formed in a continuous liquid polymer phase by cooling the solution, cooling is continued to solidify the polymer, and at least a substantial portion of the liquid is removed from the resulting solid to form the cellular polymer structure.</p> |
