Coated polyolefin

Abstract

A coated substrate comprising a polyolefin substrate having a functionalized polymer layer disposed thereon, the polyolefin substrate having a flow-through pore structure with pore sizes ranging from about 5 microns to about 250 microns, the functionalized polymer layer having a thickness ranging from about 1 micron to about 20 microns, and the pore structure of the layer having pore sizes ranging from about 1 nm to about 100 nm.

Claims

1. A coated substrate, A functional polymer layer as a coating, and The polyolefin substrate comprises the functional polymer layer coated on top of the aforementioned functional polymer layer, The polyolefin substrate has a flow-through pore structure with pore sizes in the range of 5 microns to 250 microns, and The functional polymer layer has a thickness in the range of 1 micron to 20 microns, and the pore structure of the layer has a pore size in the range of 1 nm to 100 nm. The functional polymer layer is not covalently bonded to the polyolefin substrate, and the functional polymer layer is 25 m ２ / g to 800m ２ A coated substrate having a surface area of ​​1 / g, wherein the functional polymer layer has the function of adsorbing chemical substances.

2. The coated substrate according to claim 1, wherein the mass ratio of the functional polymer layer to the polyolefin substrate is in the range of 1 / 100 to 50 / 100.

3. The coated substrate according to claim 1, wherein the coated substrate has a pore volume of 5% to 70%.

4. The coated substrate according to claim 1, wherein the polyolefin substrate comprises polyethylene, polypropylene, polymethylpentene, polynorbornene, cyclic olefin copolymer, or a combination thereof.

5. The coated substrate according to claim 1, wherein the functional polymer layer comprises a polymer formed from styrene, divinylbenzene, vinylbenzyl chloride, acrylate, methacrylate, ethylvinylbenzene, derivatives thereof, or combinations thereof.

6. The coated substrate according to claim 1, wherein the polyolefin substrate includes a form selected from a woven fabric, a nonwoven mat or thin paper-like sheet made of fibers, a sheet, a screen, a woven mesh, and sintered particles.

7. The coated substrate according to claim 1, further comprising one or more additional functional polymer layers as an additional coating on the functional polymer layer, wherein the one or more additional functional polymer layers are hydrophobic, hydrophilic, or have ion-exchange functionality.

8. The coated substrate according to claim 1, wherein the functional polymer layer contains negatively charged sulfonate groups, and positively charged anion exchange particles are ionically bonded to the negatively charged sulfonate groups.

9. The coated substrate according to claim 1, wherein the functional polymer layer contains positively charged amino groups, and negatively charged cation exchange particles are ionically bonded to the positively charged amino groups.

10. To provide the aforementioned polyolefin substrate, A mixture is formed by combining one or more pologens, one or more monomers, and a polymerization initiator with the polyolefin substrate. The polymerization of the monomer is initiated to form the functional polymer layer as a coating, and Stirring the mixture during at least a portion of the polymerization, Includes, A process for forming a coated substrate according to claim 1, wherein the functional polymer layer has the function of adsorbing chemical substances.

11. The process according to claim 10, wherein the pologen comprises a solvent selected from aliphatic, alicyclic, aromatic hydrocarbons, halogenated aliphatic, and halogenated aromatics.

12. The process according to claim 10, wherein the one or more pologens comprise n-heptane, the one or more monomers comprise divinylbenzene, and the weight ratio of the pologens to the monomers is in the range of 1 / 1 to 20 / 1.

13. The process according to claim 10, wherein the functional polymer layer is formed in a sealed container while the mixture is being stirred.

14. The process according to claim 10, wherein the weight ratio of the pologen to the monomer is 1 / 10 to 400 / 10 by mass, and / or the ratio of the monomer to the substrate is 1 / 100 to 50 / 100 by mass.

15. The process according to claim 10, wherein the Hildebrand solubility parameters of the pologen and the monomer differ by only 4 or less.

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