Henry's Law of Sorption in Rubbery Polymers

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Hi everyone,

This is my first time posting here, so I apologize in advanced for not knowing the culture of this site. Please be patient, I will learn. :)

I'm studying the sorption behaviors of gases in polymers and I have a question about sorption in rubbery polymers following Henry's law of sorption. I know it is a weak interaction between polymer and penetrant, but what is the driving force for the process. Holding critical temperature of gas, system temperature and pressure constant and dismissing facilitated transport. What interaction is there between the polymer and penetrant? Is it just Van Der Waals interaction that makes it soluble? I read several articles, book sections, etc and I think I understand what they are stating but I don't feel satisfied that I understand the process in its entirety. If you guys have a good article or information I would really appreciate it.

Thank you,

Ross
 

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