Dissolvable valve in a fluid processing device

1. A fluid processing device, comprising:

a substrate;

one or more fluid retainment regions in communication with the substrate, comprising at least a first fluid retainment region and a second fluid retainment region;

a first flow passageway in fluid communication with the at least first fluid retainment region and the second fluid retainment region; and

a barrier, arranged in the flow passageway, configured to separate the first fluid retainment region from the second fluid retainment region so that there is no fluid communication between the first fluid retainment region and the second fluid retainment region when the barrier is in an undissolved state, wherein the barrier comprises a solvent dissolvable, LCST-free material, and wherein the barrier is configured to dissolve to establish fluid communication or to increase the rate of fluid communication, between at least the first fluid retainment region and the second fluid retainment region.

2. The fluid processing device of claim 1 , wherein the LCST-free material comprises a polymer of at least one or more of an acrylamide monomer, an acrylic ester, a vinyl ether, a N-vinylamide, a vinyl acid, a sodium salt of a vinyl acid, a nitrogen-containing vinyl monomer, a polyamine, a poly(alkylene imine), a poly(silicic acid), a salt of poly(silicic acid), a poly(maleic acid), poly(maleic anhydride-alt-methylvinyl ether), and a combination thereof.

3. The fluid processing device of claim 1 wherein the LCST-free material comprises a polymer of at least one or more acryl amide monomers comprising one or more of (meth)acryloxylmorpholine, (meth)acrylamide, N-hydroxymethyl(meth)acrylamide, N-(2-hydroxyethyl)(meth)acrylamide, N-tris(hydroxymethyl)methyl(meth)acrylamide, N-methyl(meth)acrylamide, N-hydroxymethyl(meth)acrylamide, N-(2-hydroxyethyl)(meth)acrylamide, N-(3-hydroxypropyl)(meth)acrylamide, N,Ndimethyl(meth)acrylamide, (meth)acryloyltris(hydroxymethyl)methylamine, (meth)acryloylurea, and a combination thereof.

4. The fluid processing device of claim 1 , wherein the LCST-free material comprises a polymer of at least one or more acrylic esters, the one or more acrylic esters comprising one or more of 2-(acryloyloxy)ethyl succinate, [2-(acryloyloxy)ethyl]trimethylammonium chloride, hydroxymethyl(meth)acrylate, hydroxyethyl (meth)acrylate, and a combination thereof.

5. The fluid processing device of claim 1 , wherein the LCST-free material comprises at least one polymer derived from at least one or more vinyl ethers comprising one or more of vinyl methyl ether, ethylene glycol vinyl ether, and a combination thereof.

6. The fluid processing device of claim 1 , wherein the LCST-free material comprises at least one polymer prepared with at least one or more N-vinylamides comprising one or more of N-vinylformaide, N-methyl-N-vinylformaide, N-vinylacetamide, N-methyl-Nvinylacetamide, and a combination thereof.

7. The fluid processing device of claim 1 , wherein the LCST-free material comprises at least one polymer prepared with at least one or more vinyl acids comprising acrylic acid, 3-acryyloyloxypropane-1-sulfonic acid, vinylphosphonic acid, vinylsulfonic acid, styrene sulfonic acid, 4-vinylbenzoic acid, N-vinylsuccinamidic acid, and a combination thereof.

8. The fluid processing device of claim 1 , wherein the LCST-free material comprises at least one polymer prepared with at least one or more vinyl monomers comprising one or more of 1-vinyl-2-pyrrolidinone, 3-vinyloxazilidine-2-one, 5-methyl-3-vinyloxazolidine-2-one, 4-vinylpyridine, an N-substituted derivative of 4-vinylpyridine, 2-vinylpiperidine, 4vinylpiperdidine, and a combination thereof.

9. The fluid processing device of claim 1 , wherein the LCST-free material comprises at least one polymer prepared with at least one or more polyamines comprising one or more of poly(vinylamine), poly(allylamine), and a combination thereof.

10. The fluid processing device of claim 1 , wherein the LCST-free material comprises at least one polymer comprising at least one or more of a linear poly(alkylene imine), a branched poly(alkylene imine), and a combination thereof.

11. The fluid processing device of claim 10 , wherein the poly(alkylene imine) comprises a polymer of at least one or more of poly(ethylene imine), poly(2-methyl-2-oxazoline), poly(2-ethyl-2-oxazoline), and a combination thereof.

12. The fluid processing device of claim 1 , wherein the barrier comprises a water-soluble barrier.

13. The fluid processing device of claim 1 , further comprising:

a first reaction component, retained in the first fluid retainment region; and

a second reaction component retained in the second fluid retainment region, wherein the second reaction component differs from the first reaction component.

14. The fluid processing device of claim 1 , further comprising:

a third fluid retainment region;

a second flow passageway; and

at least one actuatable valve arranged in the second flow passageway, wherein the at least one flow passageway is in fluid communication with the third fluid retainment region and with at least one of the plurality of fluid retainment regions.

15. The fluid processing device of claim 14 , wherein the at least one actuatable valve comprises a pressure-actuatable valve or a heat-actuatable valve.

16. The fluid processing device of claim 15 , wherein the at least one actuatable valve comprises a pressure-actuatable valve comprising a frangible diaphragm.

17. The fluid processing device of claim 15 , wherein the at least one actuatable valve comprises—a heat-actuatable—valve comprising one or more of a rubber, a plastic, a wax, a paraffin, a polyethylene glycol material, a derivative of polyethylene glycol, a polysaccharide, and a combination thereof.

18. The fluid processing device of claim 1 , wherein the barrier comprises a fluid flow modulator.

19. The fluid processing device of claim 18 , wherein the first flow passageway is dimensioned to be effective to achieve flow of a fluid by capillary action, from at least one of the at least two fluid retainment regions through the flow passageway.

20. The fluid processing device of claim 18 , wherein the first flow passageway is dimensioned to be effective to achieve a migration of charged components by electrokinetic action, from at least one of the at least two fluid retainment regions through the first flow passageway.

21. The fluid processing device of claim 1 , wherein the barrier comprises a series of fluid flow modulators arranged in sequence in the first flow passageway and adapted to open sequentially, to establish fluid communication or to increase the rate of fluid communication, between the at least two fluid retainment regions.