Discrete hydrophilic-hydrophobic porous materials and methods for making the same
First Claim
1. A porous polymeric material comprising a surface, wherein said polymeric material is a single piece and wherein said surface comprises a plurality of discrete regions that exhibit distinct surface properties.
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Abstract
This invention relates to porous polymeric materials having discrete regions that exhibit distinct surface properties. The invention also relates to methods of making such porous polymeric materials and their applications. The geography of the discrete regions can be determined in a selective and controlled manner. Porous materials having discrete regions of distinct hydrophilicity, hydrophobicity, oleophobicity, biological molecules binding capability, wetting and wicking property, presence or density of functional groups, chemical reactivity, electric charges, porosity and pore sizes can be manufactured using this invention.
154 Citations
64 Claims
- 1. A porous polymeric material comprising a surface, wherein said polymeric material is a single piece and wherein said surface comprises a plurality of discrete regions that exhibit distinct surface properties.
- 33. A method of making porous materials having a plurality of discrete regions that exhibit distinct surface properties comprising, arranging polymer particles with different properties in a predetermined pattern and compress sintering the arranged particles into a porous material.
- 37. A method of making porous materials having a plurality of discrete regions that exhibit distinct surface properties comprising, providing a porous substrate, selectively placing polymer powders on discrete regions on the substrate, and compress sintering the polymer powders into the substrate.
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43. A method of making porous materials having a plurality of discrete regions that exhibit distinct surface properties, comprising:
- providing a porous substrate; and
selectively activating discrete regions of the substrate. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52)
- providing a porous substrate; and
Specification