I would put the polymer in a dedicated chamber with air replaced by dried nitrogen, or better, by noble gas, i.e. argon. The best protection is to put it inside a vacuum chamber, but the polymer may degas causing some changes to the polymer itself. Some dedicated pieces of optics or hygroscopic media are protected this way.
Adam Weilding.Thank you for your answer ,yes I can do encapsulation of semi-conducting polymer, but the problem is that encapsulation affects the physico-chemical properties of semi-conducting polymer, including their conductivity ?
Zeggagh Khaled Ahh I see. I used to do something similar and encapsulate with something that was relatively inert. But if it affects the performance I see how that could be a problem. The nice thing with encapsulation is it makes the sample much more robust and easier to reproduce than general storage.