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What polymer that can absorb water moisture quickly?
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Leonard Rockso
What polymer that can absorb water moisture quickly?
Dear Ricky, a polymer that fast adsorbs water wapors should be a mesoporous to microporous polymer network containing hydrophilic groups. High porosity is needed for an efficient transport of wapors to adsorption sites such as, for example, amino groups. The network should be structured in such a way that macropores go throughout the whole network and mesopores, eventually micropores, are located in the walls of macropores in order to reduce the limitations originating from fast establishing equilibrium at the surface layers of polymer particles as indicated above by Gyogy Banhegyi.
Dear Ricky, a polymer that fast adsorbs water wapors should be a mesoporous to microporous polymer network containing hydrophilic groups. High porosity is needed for an efficient transport of wapors to adsorption sites such as, for example, amino groups. The network should be structured in such a way that macropores go throughout the whole network and mesopores, eventually micropores, are located in the walls of macropores in order to reduce the limitations originating from fast establishing equilibrium at the surface layers of polymer particles as indicated above by Gyogy Banhegyi.
Dear Ricky, swelling requires a certain amount of liquid. Water vapor absorption is usually much smaller than liquid water absorption even in the same polymer. Therefore you cannot expect a high swelling in water vapor atmosphere even with hygroscopic polymers. At first water molecules from the vapor phase get attached to the most active sites and when these sites are saturated the adsorption process stops. If you use liquid water, however, it will be more like a dissolution process which can only be stopped by crosslinking.
Dear Ricky, swelling requires a certain amount of liquid. Water vapor absorption is usually much smaller than liquid water absorption even in the same polymer. Therefore you cannot expect a high swelling in water vapor atmosphere even with hygroscopic polymers. At first water molecules from the vapor phase get attached to the most active sites and when these sites are saturated the adsorption process stops. If you use liquid water, however, it will be more like a dissolution process which can only be stopped by crosslinking.
I just found these polymers in a master thesis: Hydromed D4 and Hydromed D7. They even had to discharge the use of D4 in the study because it got swallen so much. (absorbs water up to 50% of its own weight from the air!!!) Good luck!
I just found these polymers in a master thesis: Hydromed D4 and Hydromed D7. They even had to discharge the use of D4 in the study because it got swallen so much. (absorbs water up to 50% of its own weight from the air!!!) Good luck!
Many of the chemicals, that readily absorb moisture from the surrounding atmosphere, are salts. They are desiccants or are called hygroscopic compounds. One may add to the list materials such as activated carbon, zeolites and silica gel. As you know, a material (with numerous microscopic pores) will effectively absorb various liquids & gases. The polymers are not like that otherwise they will not be used in packaging. I am sure that you came across silica gel being used in products such as shoes or in vitamin bottles.
Many of the chemicals, that readily absorb moisture from the surrounding atmosphere, are salts. They are desiccants or are called hygroscopic compounds. One may add to the list materials such as activated carbon, zeolites and silica gel. As you know, a material (with numerous microscopic pores) will effectively absorb various liquids & gases. The polymers are not like that otherwise they will not be used in packaging. I am sure that you came across silica gel being used in products such as shoes or in vitamin bottles.
Dear Ricky, a polymer that fast adsorbs water wapors should be a mesoporous to microporous polymer network containing hydrophilic groups. High porosity is needed for an efficient transport of wapors to adsorption sites such as, for example, amino groups. The network should be structured in such a way that macropores go throughout the whole network and mesopores, eventually micropores, are located in the walls of macropores in order to reduce the limitations originating from fast establishing equilibrium at the surface layers of polymer particles as indicated above by Gyogy Banhegyi.
Dear Ricky, a polymer that fast adsorbs water wapors should be a mesoporous to microporous polymer network containing hydrophilic groups. High porosity is needed for an efficient transport of wapors to adsorption sites such as, for example, amino groups. The network should be structured in such a way that macropores go throughout the whole network and mesopores, eventually micropores, are located in the walls of macropores in order to reduce the limitations originating from fast establishing equilibrium at the surface layers of polymer particles as indicated above by Gyogy Banhegyi.
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un polímero que absorbe mucha agua es el poliacrilato de potasio
un polímero que absorbe mucha agua es el poliacrilato de potasio
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Dear Ricky, swelling requires a certain amount of liquid. Water vapor absorption is usually much smaller than liquid water absorption even in the same polymer. Therefore you cannot expect a high swelling in water vapor atmosphere even with hygroscopic polymers. At first water molecules from the vapor phase get attached to the most active sites and when these sites are saturated the adsorption process stops. If you use liquid water, however, it will be more like a dissolution process which can only be stopped by crosslinking.
Dear Ricky, swelling requires a certain amount of liquid. Water vapor absorption is usually much smaller than liquid water absorption even in the same polymer. Therefore you cannot expect a high swelling in water vapor atmosphere even with hygroscopic polymers. At first water molecules from the vapor phase get attached to the most active sites and when these sites are saturated the adsorption process stops. If you use liquid water, however, it will be more like a dissolution process which can only be stopped by crosslinking.
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I just found these polymers in a master thesis:
Hydromed D4 and Hydromed D7. They even had to discharge the use of D4 in the study because it got swallen so much. (absorbs water up to 50% of its own weight from the air!!!)
Good luck!
Here is the link for these polymers:
http://www.advbiomaterials.com/products/hydrophilic/hydromed.html
I just found these polymers in a master thesis:
Hydromed D4 and Hydromed D7. They even had to discharge the use of D4 in the study because it got swallen so much. (absorbs water up to 50% of its own weight from the air!!!)
Good luck!
Here is the link for these polymers:
http://www.advbiomaterials.com/products/hydrophilic/hydromed.html
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Hello!
Try Polyvinyl Pyrrolidone!
It will not swell, but it absorbs considerable amount of water from the atmosphere.
Also look at this site:
https://www.zmescience.com/science/cotton-polymer-water-mist-absorbing-material-423423/
Hello!
Try Polyvinyl Pyrrolidone!
It will not swell, but it absorbs considerable amount of water from the atmosphere.
Also look at this site:
https://www.zmescience.com/science/cotton-polymer-water-mist-absorbing-material-423423/
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Many of the chemicals, that readily absorb moisture from the surrounding atmosphere, are salts. They are desiccants or are called hygroscopic compounds. One may add to the list materials such as activated carbon, zeolites and silica gel.
As you know, a material (with numerous microscopic pores) will effectively absorb various liquids & gases. The polymers are not like that otherwise they will not be used in packaging. I am sure that you came across silica gel being used in products such as shoes or in vitamin bottles.
Many of the chemicals, that readily absorb moisture from the surrounding atmosphere, are salts. They are desiccants or are called hygroscopic compounds. One may add to the list materials such as activated carbon, zeolites and silica gel.
As you know, a material (with numerous microscopic pores) will effectively absorb various liquids & gases. The polymers are not like that otherwise they will not be used in packaging. I am sure that you came across silica gel being used in products such as shoes or in vitamin bottles.
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