High-density polydicyclopentadiene
The invention provides a method of contacting a membrane having a highly cross-linked polydicyclopentadiene matrix with a feed solution having a) a first component with a molecular weight in the range of from about 100 g mol −1 to about 600 g mol −1 and a cross-sectional area of less than about 0.40 nm 2 and b) a second component with a molecular weight in the range of from about 100 to about 600 grams g mol −1 and a cross-sectional area of greater than about 0.50 nm 2 so that the feed solution is fractionated into a permeate comprising the first component and a retentate enriched in the second component.
1. A method comprising contacting a membrane with a feed solution comprising a) a first component having a molecular weight in the range of from about 100 g mol −1 to about 600 g mol −1 and a critical area of less than about 0.40 nm 2 and b) a second component having a molecular weight in the range of from about 100 to about 600 grams g mol −1 and a critical area of greater than about 0.50 nm 2 so that the feed solution is fractionated into a permeate comprising the first component and a retentate enriched in the second component, wherein the membrane comprises a highly cross-linked polydicyclopentadiene matrix and wherein the critical area of the first component is the lowest rectangular cross-sectional area of the first component in its energy minimized conformation and the critical area of the second component is the lowest rectangular cross-sectional area of the second component in its energy minimized conformation.
2. The method of claim 1 wherein the ratio of crosslinked double bonds to uncrosslinked double bonds in the highly cross-linked polydicyclopentadiene matrix is at least about 3:2.
3. The method of claim 1 wherein the ratio of crosslinked double bonds to uncrosslinked double bonds in the highly cross-linked polydicyclopentadiene matrix is at least about 4:1.
4. The method of claim 1 wherein the first component is an organic compound.
5. The method of claim 1 wherein the first component is a catalyst.
6. The method of claim 1 wherein the second component is an organic compound.
7. The method of claim 1 wherein the second component is a catalyst.
8. The method of claim 1 wherein the feed solution comprises an organic solvent.
9. The method of claim 1 wherein the feed solution comprises an aprotic organic solvent.
10. The method of claim 1 wherein the feed solution comprises water.