Charge transport and storage in cork/TetraPak® composites: The influence of powder drying before composite manufacture

Cork is a natural cellular material and is the outer bark of the Mediterranean tree Quercus Suber-L. Its many different applications derive from the unique set of properties: cork is a good thermal, vibratic and acoustic insulator, prevents fire propagation, it is impervious to water. In this study shows that the main problem for charge storage during long periods is related to the small amount of humidity present in cork. Therefore control of the water content is essential.